Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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 |
| 7086482 | Recovery of hydrocarbons in oil wells by injection of treated inert gases obtained from the industrial effluence A process of recovering hydrocarbons in oil wells by the injection of treated inert gases from cement clinker production effluence(s) comprising the steps of treating the effluence(s) to make the effluence(s) compatible with the hydrocarbons and injecting the treate... | 08/08/2006 |
| 6738394 | Method, apparatus and protocol for the unidirectional and interference-safe transmission of digital data via radio waves In a method for the unidirectional and interference-safe transmission of digital data via radio waves, wherein the data which are composed of data packets each comprising a defined number of bytes and of at least one synchronization packet are transmitted from a tra... | 05/18/2004 |
| 6679039 | Rotary mower blade A rotary mower blade is formed with a notch at each end of the blade. Upwardly inclined vanes are provided on trailing edges of end portions of the blade adjacent the respective notches. Intermediate a central portion of the blade and the end portions, su... | 01/20/2004 |
| 6672411 | Control mechanism for a zero turning radius vehicle A control mechanism for a dual transmission vehicle is disclosed. First and second overlaying plates are provided, the first plate having a profiled slot which communicates with parallel slots in the second plate. The slots in the first and second plates ... | 01/06/2004 |
| 6666996 | Process for producing marl slags In a process for producing marl slags and marl slag cements or mixed components for mixed cements from marl having a basicity CaO/SiO2 of | 12/23/2003 |
| 6660223 | Device for atomizing liquid melts In a device for atomizing liquid melts, in particular oxidic slags or glasses, including a slag tundish and an outlet opening into which a lance is immersed to inject gases or vapor while forming an annular gap, the lance (3) is comprised of two coaxial t... | 12/09/2003 |
| 6659565 | Motorized hand truck for driving and steering a wheeled accessory A hand truck is provided with at least one wheel which is driven and is steerable. A wheeled accessory is removably connected to the hand truck to be powered and directed in response to operation of the hand truck.... | 12/09/2003 |
| 6641497 | Epicyclic transmission for zero turning radius vehicles A drive shaft rotated by a drive gear is coupled to an epicyclic gear arrangement which is rotatable as a unit about the drive shaft's longitudinal axis, as well as about its own axis. A driven gear is rotatably mounted drive shaft between the drive gear ... | 11/04/2003 |
| 6598586 | Dual arm choke and throttle control A choke and throttle control arrangement for a small engine includes a base plate to which a pair of levers are pivotally joined. One includes a governor spring arm connected to the engine's speed governor, and the other is provided with an arm which serv... | 07/29/2003 |
| 6572698 | Activated aluminosilicate binder An activated aluminosilicate binder containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts is disclosed. The aluminosilicates are selected from a group consisting of blast furnace slag, clay, marl and industrial by-pr... | 06/03/2003 |
| 6572125 | Rack and pinion steering arrangement for a riding lawnmower A pinion mounted at the lower end of a steering column engages a rack which is supported for movement laterally of the longitudinal axis of a riding lawnmower. Opposite ends of the rack have respective drag links pivotally mounted thereto. Free ends of th... | 06/03/2003 |
| 6562547 | Method for producing structure in chips A method for producing structures in chips is realized by carrying out a sequence of structuring steps in a self-adjusting manner. By structuring a first auxiliary layer applied on a substrate, a first masking structure is formed after a first masking pro... | 05/13/2003 |
| 6535053 | Method for obtaining a temperature--independent voltage reference as well as a circuit arrangement for obtaining such a voltage reference In a method for obtaining a temperature-independent voltage reference by an energy gap reference circuit using at least one bipolar transistor and a voltage source, only a single bipolar transistor is connected in series with a resistor. Different voltage... | 03/18/2003 |
| 6520014 | Microsensor having a sensor device connected to an integrated circuit by a solder joint In a microsensor with a micro-electromechanical sensor element and an integrated circuit for measuring, calibration and compensation electronics, whereby the sensor is connected electrically to the integrated circuit (IC), the micro-electromechanical sens... | 02/18/2003 |
| 6497453 | Frame and seat support for a riding lawn mower A frame channel is provided for the mounting of an engine of a rear engine riding lawn mower. A platform is secured to the frame channel, the platform includes a portion which overlays the engine and which includes an opening therein. A seat-supporting ho... | 12/24/2002 |
| 6483301 | Method for compensating mechanical stresses in measuring the magnetic field strength by hall sensors A method for compensating mechanical stresses in measuring the magnetic field strength by Hall sensors is disclosed. It is proceeded in a manner that the electric resistance and/or a measuring quantity proportional to the electric resistance of the Hall s... | 11/19/2002 |
| 6437458 | Engine control circuit for a lawn tractor An engine control circuit for a lawn tractor having a magneto-operated engine. The circuit includes a four-position switch. When in the first position, the engine is stopped. The engine is started in the fourth position. In the third position, the tractor... | 08/20/2002 |
| 6428109 | Mining machine with sliding cutting tool assembly In a cutting machine (2), including rotatably mounted cutting or shearing tools (19), a loading ramp and a hauling means (4) extend in a direction towards a mine face for receiving and hauling cut or sheared material. The cutting or shearing tools (19) ar... | 08/06/2002 |
| 6427364 | Arrangement for heating air supplied to a carburetor of a snow thrower engine A snow thrower engine carburetor is covered by a heater box provided with a channel through which air passes so as to be heated by the engine's muffler. The heated airstream is changed in direction as it leaves the heater box and moves towards the carbure... | 08/06/2002 |
| 6409819 | Alkali activated supersulphated binder The invention describes an activated supersulphated aluminosilicate binder containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts, wherein the aluminosilicates are selected from the group consisting of blast furnace s... | 06/25/2002 |
| 6409793 | Method for processing steel slags containing chromium A method for processing steel slags and optionally iron carriers such as, e.g., electric furnace slags, converter slags, dusts derived from steel production, mill scale or secondary metallurgical residues, in which the molten steel slags or iron carriers ... | 06/25/2002 |
| 6402095 | Device for displacing the moveable parts of rail switches or crossings In a device for displacing the movable parts of rail switches or crossings, in which a plurality of hydraulic cylinder piston units engaging in an offset manner in the longitudinal direction of the rails are each connected in series, at least one directio... | 06/11/2002 |
| 6395585 | Method for housing sensors in a package A method for housing sensors in a package and, in particular, housing chemical sensors, flow sensors or optical sensors in a synthetic package. In a first step, the active sensor surface of a semiconductor or IC sensor is provided with a cap forming a hol... | 05/28/2002 |
| 6381881 | Engine cover for a snow thrower A snow thrower engine cover is provided with spaced interior walls to define a first space for receiving air used to cool the engine, a second space for retaining air heated by the engine's exhaust and a third space between the walls for restricting heat ... | 05/07/2002 |
| 6371418 | Curve path of a switch, and track joint using this type of curve path The invention relates to a curve path of a switch comprising switch tongues, a main track and a branch track, which curve path from the beginning of the curve path to the end of the curve path is comprised of several portions having different curvatures 1... | 04/16/2002 |
| 6364929 | Method for reprocessing steel slags and ferriferous materials The invention relates to a method for processing steel slags and iron carriers such as, e.g., electric furnace slags, converter slags, fine ores, dusts from the production of steel and millscale, for recovering pig iron and environmentally safe slags. A m... | 04/02/2002 |
| 6354541 | Device for locking end positions of mobile switch parts A device for locking the end positions of movable railway switch parts in which two parts axially displaceable relative to each other are displaced into a position coupled to each other for movement in at least one direction. The relatively displaceable p... | 03/12/2002 |
| 6347455 | String trimmer head A string trimmer head is provided for receiving and retaining separate lengths of string supplied from outside the head. String lengths passing through openings in the periphery of the head are held by clamping members provided within the head. The clampi... | 02/19/2002 |
| 6325334 | Coupling device for a point actuator and/or lock In a connecting device for a switch actuator and/or a lock for movable parts of a railway switch or crossing, including a rod assembly, in particular a sliding rod or a locking rod articulately connected with the movable part, the movable part or the rod ... | 12/04/2001 |
| 6324936 | Cable tensioning device A cantilevered leaf spring is formed at its proximal end to the housing of a power equipment unit. The distal end of the spring carries a bushing which engages a control cable for operating components of the unit. The proximal end of the spring is adjusta... | 12/04/2001 |
| 6319434 | Method for granulating and grinding liquid slag and device for realizing the same In a process for granulating and disintegrating molten slags, in particular blast furnace slags, with water, a compressed water jet is directed into the slag and the slag is ejected as the jacket of the compressed water jet. The device for carrying out th... | 11/20/2001 |
| 6318123 | Method for granulating a liquid slag bath and device for carrying out the method The method for granulating liquid slag melts, in particular blast furnace slag, in which the melt (2) is ejected into a cooling chamber via a slag tundish (1) and in which fluid under pressure, in particular compressed gas, vapor or pressurized water, is ... | 11/20/2001 |
| 6318003 | Snow thrower A snow thrower of compact proportions is obtained by a single piece housing which supports an engine having a vertical output shaft extending within the housing. The housing also supports a horizontally disposed auger drive shaft. A belt drive connects th... | 11/20/2001 |
