Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8404900 | Absorbents for separating acidic gases An absorbent for separating acidic gases is disclosed. The absorbent or an absorbent composition for separating acidic gases has more than 3 kinds of compounds along with Chemical Formula 1 and 2, and has ability of rapid carbon dioxide elimination, excellent absorp... | 03/26/2013 |
| 8349774 | Preparation method of lubricating oil and lubricating oil produced thereby Provided are a mixed nano-lubricating oil and a method for preparing the same. The method for preparing a mixed nano-lubricating oil includes the steps of: (a) preparing a mixed solution by adding and mixing a nanopowder and a dispersant to a solvent and pulverizing... | 01/08/2013 |
| 8316645 | Triple swirl gas turbine combustor Disclosed is a triple swirl gas turbine combustor using various fuels such as coal gas, DiMethyl Ether, and waste gas generated in an ironworks in a gas turbine. The triple swirl gas turbine combustor combusts three different fuels simultaneously or individually and... | 11/27/2012 |
| 8307609 | Reinforcement device for lateral buckling stress and method of engaging reinforcement device A reinforcement device for a lateral buckling stress installed on an angle-type steel member so as to be attachable and detachable therefrom without power-off of a power line tower, preparation and disassembly of members in order to prevent lateral buckling and acci... | 11/13/2012 |
| 8304925 | Movable object type high-efficiency wave energy apparatus Disclosed is a movable object type high-efficiency wave energy apparatus which further accelerates vibration of floating bodies according to vibration of waves to maximize electric power generation efficiency. ... | 11/06/2012 |
| 8299804 | Nondestructive inspection method of insulator using frequency resonance function A nondestructive inspection method of testing insulators using frequency resonance function that can inspect an anomaly of an insulator by vibrating the insulator with a force having the characteristic of white noise, measuring the change in motion of the insulator ... | 10/30/2012 |
| 8291708 | Combustor and multi combustor including the combustor, and combusting method A dual fuel nozzle of a gas turbine combustor with a variable jetting hole diameter is disclosed. The combustor includes a plurality of swirling wings disposed along an outer peripheral surface of a central shaft to have at least one main fuel jetting hole, an air d... | 10/23/2012 |
| 8249836 | Simulation system for FACTS connected online to SCADA system An online simulation system for a flexible AC transmission system (FACTS) which is capable of analyzing operation control effect of the FACTS in advance through an online data connection with a supervisory control and data acquisition (SCADA) system used for operati... | 08/21/2012 |
| 8239064 | Robot mechanism for inspection of live-line suspension insulator string Disclosed herein is a robot mechanism for inspection of a live-line suspension insulator string. A robot body of the robot mechanism reciprocates along the live-line suspension insulator string and includes upper and lower robot frames configured to encircle the ins... | 08/07/2012 |
| 8190552 | Method of estimating salt contamination A method of estimating a salt contamination is provided. The method includes preparing salt contamination data measured at a plurality of areas, preparing geographical factor data of areas for estimating, preparing rainfall amount data near the areas, setting a corr... | 05/29/2012 |
| 8134264 | Large capacity hollow-type flywheel energy storage device Disclosed is a large capacity hollow-type flywheel energy storage device. The energy storage device includes a hollow shaft, a vacuum chamber receiving the hollow shaft, a flywheel having a predetermined weight and disposed at an inner edge of the vacuum chamber, an... | 03/13/2012 |
| 8132415 | Fuel nozzle of gas turbine combustor for DME and design method thereof Disclosed herein are a fuel nozzle of a gas turbine combustor for dimethyl ether (DME, CH3OCH3) and a design method thereof. The fuel nozzle includes a pilot fuel injection hole formed at the center of the nozzle and a plurality of fuel injecti... | 03/13/2012 |
| 8122647 | Power transmission tower Disclosed is a power transmission tower, which includes a tower body; first through sixth main insulation arms connected by one end thereof to the tower body with an angle with the tower body, respectively, and arranged radially and symmetrically about the tower bod... | 02/28/2012 |
| 8062699 | Method for repairing aged reinforced concrete structure using surface-penetration reinforcing agent Disclosed is a surface-penetration reinforcing agent that is used to effectively repair a damaged reinforced concrete structure. The surface-penetration reinforcing agent includes a silicate compound, an acrylate monomer, an amine compound and a silane compound as r... | 11/22/2011 |
| 8061096 | Reinforcement device for compression buckling strength and method of fastening the same A reinforcement device for compression buckling strength and a method of fastening the same are disclosed. The reinforcement device includes a member seating body surrounding an angle-type steel-frame member, first and second securing couplers securing opposite ends... | 11/22/2011 |
| 8049485 | AC loss measurement device of high-temperature superconductor A measuring device for measuring the alternating current (AC) loss of a high-temperature superconductor is disclosed. In accordance with an embodiment of the present invention, the device includes a pulse power supply unit, which outputs pulse power in a cycle, a le... | 11/01/2011 |
| 8046111 | System and method for controlling multiple facts Disclosed are a system and method with a cooperative control algorithm that can appraise voltage stability of a power system in cooperation with a supervisory control and data acquisition (SCADA)/emergency management system (EMS) for cooperative control on multiple ... | 10/25/2011 |
| 8016950 | Hydraulic drive type partial inter-tube lancing system for cleaning steam generator in nuclear power plant A hydraulic drive type partial inter-tube lancing system for cleaning a steam generator in a nuclear power plant, which removes foreign matter, such as sludge, deposited around heat transfer tubes in the steam generator, is disclosed. More particularly, a hydraulic ... | 09/13/2011 |
| 7989120 | Separator for high-temperature fuel cell Provided is a high-temperature fuel cell separator. The fuel cell separator includes a fuel gas flow path containing hydrogen, an oxidant gas flow path containing mainly an oxygen component being supplied from an oxygen/nitrogen separator of a system and participati... | 08/02/2011 |
| 7959748 | Method of manufacturing Ni-based superalloy component for gas turbine using one-step process of hot isostatic pressing and heat treatment and component manufactured thereby Disclosed herein are a method of manufacturing a Ni-based superalloy component for a gas turbine using a one-step process of hot isostatic pressing (HIP) and heat treatment, and a component manufactured by the method. In the method, an HIP process and a heat treatme... | 06/14/2011 |
| 7944184 | Static compensator apparatus for HVDC system A static compensator apparatus for a HVDC system may control harmonic wave compensation at high passive speed to meet operating characteristics of the HVDC system. A static compensator is turned-on in a normal mode and compensates for invalid power and removes a har... | 05/17/2011 |
| 7943544 | Method of recycling spent flue gas denitration catalyst The present invention provides a method of recycling a spent flue gas denitration catalyst and a method of determining a washing time of the spent flue gas denitration catalyst. The method of recycling the spent flue gas denitration catalyst includes physically remo... | 05/17/2011 |
| 7880341 | Switching device for transformer having uninterruptible power supply function, and methods of controlling turn ratio and voltage of the transformer using the same A switching device for a transformer allows stable power supply without power interruption when a secondary winding voltage of the transformer is changed in the case of voltage drop on a distribution line due to a load characteristic. The switching device having an ... | 02/01/2011 |
| 7848120 | Voltage-sourced HVDC system with modulation function A voltage-sourced High-Voltage Direct Current (HVDC) apparatus, which converts 3-phase AC voltage from a 3-phase AC power source into high voltage DC through a rectifier including switching elements, is provided. In the apparatus, a rectifier controller receives det... | 12/07/2010 |
| 7820591 | Highly attrition resistant and dry regenerable sorbents for carbon dioxide capture Disclosed herein is a dry regenerable sorbent for carbon dioxide capture from flue gas produced by fossil fuel-fired power plants including industrial boilers before being released to atmosphere or from fuel gas stream such as syngas produced by conversion of fossil... | 10/26/2010 |
| 7797781 | Robot mechanism for cleaning and inspection of live-line insulators A robot mechanism adopts a dry cleaning method to clean the surface of live-line insulators without using water and can perform cleaning and inspection of the surface of the live-line insulators while automatically moving along an insulator string. The robot mechani... | 09/21/2010 |
| 7784357 | Creep tester for precision load control with weight A creep tester for a precise and accurate creep test includes a movable actuator capable of loading corresponding to change in length of a specimen, a cam actuator operated in association with the movable actuator, and a self weight actuator. The movable actuator in... | 08/31/2010 |
| 7742264 | Hybrid-type superconducting fault current limiter Disclosed is provided a hybrid-type superconducting fault current limiter for rapidly limiting a fault current, the fault current limiter having a first circuit and a second circuit which are connected in parallel with each other, wherein the first circuit includes ... | 06/22/2010 |
| 7732707 | Ground rod and connection sleeve filled with compound of electric conduction An installation structure of a ground rod for driving the rod deep into the ground comprising an overhead earth wire installed to protect transformers, power-transmission lines, etc. from lightning; a ground wire that is extended from a lightning arrester to a groun... | 06/08/2010 |
| 7670421 | Penetration reinforcing agent for preventing aging of concrete and process for preparing the same A penetration reinforcing agent for preventing aging of concrete is prepared by using an inorganic silicate compound having an ethoxy or methoxy group and a monomer having a hydroxyl (OH) group. When the penetration reinforcing agent is applied onto the surface of a... | 03/02/2010 |
| 7659646 | Outer rotor superconductor journal bearing An outer rotor superconductor journal bearing that comprising modules and including an outer rotor superconductor journal bearing that cools a superconductor that is mechanically fixed to a module below a critical temperature, attains a strong magnetic fixing force ... | 02/09/2010 |
| 7654144 | Nondestructive testing apparatus for blade root of steam turbine of power plant In a nondestructive testing apparatus for testing normality of a blade root in a steam turbine installed in a nuclear plant or a thermal plant, an ultrasonic probe and an encoder can be mounted at the outside by only removing a casing of the steam turbine, without t... | 02/02/2010 |
| 7642757 | System and method for automatically operating UPFC (unified power flow controller) connected to SCADA (supervisory control and data acquisition) A system and method for operating a Unified Power Flow Controller (UPFC) connected to a SCADA (Supervisory Control and Data Acquisition) are disclosed. The UPFC automatic operation system receives power system data from the SCADA system, automatically determines UPF... | 01/05/2010 |
| 7602194 | Apparatus and method of water absorption test for generator stator winding insulator using cross capacitance A method of water absorption for a generator stator winding insulator using a cross capacitance involves detecting a state of the insulator of the stator winding of the generator using a theory of the cross capacitance, and carrying out the water absorption test of ... | 10/13/2009 |
| 7403019 | Apparatus and method of water absorption test for generator stator winding insulator using cross capacitance Apparatus and method of water absorption for generator stator winding insulator using a cross capacitance are disclosed. The apparatus includes a sensor using a cross capacitance, and a water absorption testing unit for carrying out the water absorption test of the ... | 07/22/2008 |
| 7133488 | Neutron flux mapping system for nuclear reactor A neutron flux mapping system for a nuclear reactor including: drivers each including a geared motor, a helical gear driven by the geared motor, and a storage reel adapted to supply, to the helical gear, a detector cable carrying a detector; and a double indexing pa... | 11/07/2006 |
| 7097929 | Molten carbonate fuel cell Disclosed is a molten carbonate fuel cell capable of preventing the leakage of a fuel gas due to deterioration of material by suppressing a high temperature generated at a hot section within a unit cell, thereby improving the reliability thereof. The present inventi... | 08/29/2006 |
| 7058420 | Power automation system using trunked radio system network and control method thereof Disclosed are a power automation system using a TRS network and a control method thereof which can reduce the power failure time and power failure areas when an obstacle is raised by providing a pure radio transmission path using a TRS network, in which base transce... | 06/06/2006 |
| 6961120 | Strain measurement module with tunable light generator and strain measurement system using the same A strain measurement system includes a tunable light generator, a coupler, a fiberoptic sensor unit, and an optical detector. The tunable light generator includes a Super Luminescent light emission Diode (SLD), and a tunable Fabry-Perrot (FP) filter cascaded to an o... | 11/01/2005 |
| 6911152 | High-sensitivity method and apparatus for monitoring impurities in water Disclosed herein are a high-sensitivity method and apparatus for monitoring the concentration or inflow of impurities in circulating water of a circulating water system, which can remarkably improve the measurement sensitivity by converting carbonate ions of low con... | 06/28/2005 |
