Bizarre Patents
A new toilet tank assembly aquarium for housing aquatic creatures.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6687446 | Optical waveguide device and manufacturing method therefor An optical waveguide device having a large difference in specific refractive index and manufacturing method therefor. An embedded silicon oxide layer of a Silicon on Insulator substrate is used as an under cladding 102, a core 103 is formed by processing ... | 02/03/2004 |
| 6596556 | Light emitting diode and a method for manufacturing the same An LED is provided with a p-type semiconductor region in the shape of an island being buried in an n-type semiconductor region from the surface of it, and forms a pn junction at the interface between these n-type region and p-type region. The pn junction ... | 07/22/2003 |
| 6589817 | Semiconductor device, method for manufacturing the same, and method for mounting the same A method for manufacturing a semiconductor device is provided. The semiconductor device includes a semiconductor chip having an edge and having a surface with a plurality of electrodes. A film is mounted over the surface of the semiconductor chip, the fil... | 07/08/2003 |
| 6587956 | Semiconductor memory apparatus with power consumption control A process controller 130 and clock controller 190 are used to detect transfer rates when performing data write and read operations involving memories 180-1 to 180-n for recording data. The clock controller 190 frequency-divides clock signals generated by ... | 07/01/2003 |
| 6587366 | Ferroelectric memory device and method for operating ferroelectric memory device A ferroelectric memory device capable of high-speed drive having a word line to which a plurality of memory cells is connected, wherein the plurality of memory cells is divided into at least two memory cell groups, the memory cells configuring one memory ... | 07/01/2003 |
| 6580592 | Semiconductor device A semiconductor device having an input circuit for effectively preventing breakdown caused by an electrostatic surge is provided. A first NMOS transistor is connected between an input terminal and an internal node, and a gate electrode of the first NMOS t... | 06/17/2003 |
| 6574392 | Wavelength router The present invention seeks to increase the number of wavelengths capable of being handled while reducing the sub peak and beat noise. A wave router acording to the invention has three acoustooptical filter elements; two wavelength division multiplicity r... | 06/03/2003 |
| 6555884 | Semiconductor device for providing a noise shield A first guard ring formed by high concentration ion diffusion is established around the transistor formation region of the semiconductor substrate. A second guard ring is established around the first guard ring with a prescribed gap therebetween. A metal ... | 04/29/2003 |
| 6551092 | Parison separation assembly A separate parison separation assembly for each parison in a multiple parison blow molding apparatus. Each assembly has a shear plate secured in a recess machined into the mold in order to provide a positive and repeatable location of the shear plate. The... | 04/22/2003 |
| 6547844 | Exhaust gas filtration device, auxiliary filtration device and trap device The present invention has an object to improve the efficiency of collection of solidification constituents and solids in exhaust gas and to prevent early blockage of the filter without damaging the vacuum pump. In an exhaust path 48a, a vacuum pump and ex... | 04/15/2003 |
| 6515482 | Ionization vacuum gauge An ionization vacuum gauge which can stably perform measurements of pressure in the intermediate vacuum to high vacuum regions, that is performed by an ionization-type first measurement element, as well as in the measurement region intrinsic to a second m... | 02/04/2003 |
| 6511794 | Method of forming resist pattern, and exposure device A method of forming a resist pattern and an exposure device using the method are provided in which a relatively large pattern, whose dimension is greater than a resolution limit of a KrF exposure technique, and an extremely fine pattern, whose dimension i... | 01/28/2003 |
| 6487215 | ATM communications system and ATM testing method An ATM signal generator generates packet signals by linking N data blocks that includes user data and a specifier byte containing a sequence number bit. A transmitter receives the packet signals, generates control signals containing length information, ge... | 11/26/2002 |
| 6481717 | Method of playing a card game A method of playing a card game is made up of steps dealing a first hand consisting of a first predetermined number of cards, requiring one or more players to each elect whether or not to play a second hand, comparing each of the first hands to determine ... | 11/19/2002 |
| 6480081 | Shock sensor A shock sensor includes a casing defining a cylindrical space therein. The sensor also includes a protecting tube placed the cylindrical space so as to define an annular space between the casing and the protecting tube, the protecting tube having an inner... | 11/12/2002 |
| 6469824 | Bi-directional pumped optical fiber amplifier with fault detection means and novel pump control A low cost L-band EDF (erbium doped fiber) amplifier offering high safety for human beings. Signal light and forward pumping light enter from the front end of the EDF. Amplified signal light exits and backward pumping light enters from the rear end of the... | 10/22/2002 |
| 6459110 | Semiconductor storage element A memory cell array, in which a voltage that can reverse polarization is applied only to a memory cell that is an object of data writing. A semiconductor storage element is formed by a ferroelectric capacitor, a selection transistor and a control transist... | 10/01/2002 |
| 6407410 | Semiconductor optical device A light emitting diode in accordance with the present invention has a p-n junction which is formed by selectively implanting an impurity from the surface of a semiconductor substrate, and also has an etched groove which is formed in the p-n junction area ... | 06/18/2002 |
| 6396117 | Semiconductor photodetector, method for manufacturing semiconductor photodetector and photodetector module Light on the longer wavelength side can be photoelectrically converted and output reliably, whilst improving the structural and operational reliability of a photodetector, by means of a simple manufacturing process and inexpensive manufacturing costs. A f... | 05/28/2002 |
| 6386511 | Gate valve apparatus To be able to reduce the size of a drive part and, as a result, to achieve the reduction in size and the lowering of manufacturing cots of a gate valve. An open/close mechanism is configured from a turning pair only. This open/close mechanism is configure... | 05/14/2002 |
| 6374018 | Optical switch, method of operating optical switch, and method of designing optical switch An optical switch in which operational ranges of both a bar state and a cross state are wide is provided. By applying voltages of +V, -V, -V and+V independently to a first electrode 20A, a second electrode 20B, a third electrode 20C and a fourth electrode... | 04/16/2002 |
| 6356157 | Phase locked loop circuit The Phase Locked Loop circuit of this invention has both a short locking time and a stable operation. This Phase Locked Loop circuit has two phase comparators. The inputs to these two comparators are a reference signal Vf and a feedback signal ... | 03/12/2002 |
| 6351194 | Electronic component utilizing face-down mounting An electronic component having a multi-layered printed circuit board made of an organic material, a plurality of electronic components mounted in a face-down position on the multi-layered printed circuit board, a metal cover for covering the plurality of ... | 02/26/2002 |
| 6345302 | System for transmitting and receiving data within a reliable communications protocol by concurrently processing portions of the protocol suite A system and method for sending and receiving data with a reliable communication protocol. The system includes a computer at a node having a backplane, a CPU board plugged into the backplane, software instructions for the CPU, and a special network board ... | 02/05/2002 |
| 6341291 | System for collaborative engineering using component and file-oriented tools Conventional file-based engineering design data for an engineering model are represented by a plurality of components. Each component has a unique identifier, a set of fields, each field having a data type and a data value, and a program which interprets ... | 01/22/2002 |
| 6333894 | Semiconductor storage device The present invention implements a decrease in chip size. The device is comprised of memory cell arrays 34a and 34b, a bank selector 36, a cell select circuit 38a, a data multiplexer 40, and an input/output buffer 42. The bank selector generates a bank se... | 12/25/2001 |
| 6328485 | Optical module and method for manufacturing same An optical module comprising: an optical semiconductor element, an optical fiber optically coupled to the optical semiconductor element, a substrate on which the optical semiconductor element and optical fiber are mounted, and a sealing section wherein th... | 12/11/2001 |
| 6326308 | Method for manufacturing semiconductor storage element A method in which a gate structure having a ferroelectric film and a conductor film is processed easily and without causing damage is provided. A first IrO2 film is deposited on a substrate. A ferroelectric film is formed by applying a light-se... | 12/04/2001 |
| 6320993 | Optical switch pathway configuration using control signals Control signal systems for use in configuring an optical switch such that a communication signal transmittable from a first fiber end may be transmitted along a desired pathway between the first fiber end and a second fiber end are disclosed. The systems ... | 11/20/2001 |
| 6303968 | Semiconductor light-receiving element An ohmic electrode for electrically connecting a shielding metal film and a window layer is provided to a semiconductor light-receiving element in which stray light is controlled by the shielding metal film. In this semiconductor light-receiving element, ... | 10/16/2001 |
| 6291250 | Method for manufacturing semiconductor memory device The wiring structure provided to the semiconductor memory device comprises a main wiring layer and barrier metal layer each established in the substrate and is connected to the lower electrode of a capacitive element. The main wiring layer and lower elect... | 09/18/2001 |
| 6272270 | Optical wave combining/splitting device The present invention expands a selective wavelength band and flattens light intensity in the selective wavelength band as good as or better than prior art, and makes power loss less than prior art. The invention as a period characteristic wavelength spli... | 08/07/2001 |
| 6269019 | Ferroelectric memory device capable of adjusting bit line capacitance Bit line capacitance variation devices are respectively connected to the bit lines contained in a ferroelectric memory device. These bit line capacitance variation devices change the capacitance of bit lines according to the bit line potential during oper... | 07/31/2001 |
| 6256090 | Method and apparatus for determining the shape of a flexible body A fiber optic measurement system capable of greatly improving the cost, complexity, and efficiency with which flexible body shape estimates are made. The fiber optic shape measurement system uses Bragg grating sensor technology and time, spatial, and wave... | 07/03/2001 |
| 6256676 | Agent-adapter architecture for use in enterprise application integration systems An agent-adapter architecture used in systems and methods to integrate applications of the type normally deployed across a networked enterprise. A plurality of adapters, each of which is adapted to perform a discrete function associated with respective on... | 07/03/2001 |
| 6250080 | Mobile modular intermodal cogeneration system A mobile cogeneration system fitted into modular intermodal transportation units for ease of transportation, relocation, configuration and reconfiguration, as well as providing an operating environment for the cogeneration system.... | 06/26/2001 |
| 6236481 | Method and apparatus for providing loss equalization and adjustment in a fiber optic network Loss equalization is provided in an optical communications network. Included in a optical communications network are a number of optical switches which include various elements for the routing of optical signals. The optical paths through the switches may... | 05/22/2001 |
| 6206184 | Multimedia distribution package A multimedia distribution box includes a container portion and a lid portion. The container portion includes a plurality of upstanding walls, at least two of which are opposing, and a pair of slots, each of which is formed in a respective one of the oppos... | 03/27/2001 |
| 6198205 | One-shot high-output piezoid power supply A piezoid power supply used to supply power to the electronics located in a fast moving projectile which contains a programmable projectile fuze contains multiple layers of piezoid bulk material. By using multiple layers of piezoid bulk material, instead ... | 03/06/2001 |
| 5974040 | Receiver and transmitter-receiver having variable attenuator to avoid saturation by a strong signal There are provided a receiver and a transmitter-receiver in which an automatic gain control loop is promptly performed and even in the case of a modulated wave having information in its amplitude, wave distortion can be eliminated. A received signal is re... | 10/26/1999 |
