Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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 |
| 4870295 | Photoconductive circuit element pulse generator A pulse generator for characterizing semiconductor devices at millimeter wavelength frequencies where a photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance b... | 09/26/1989 |
| 4867951 | Separation of actinides from lanthanides An organic extracting solution and an extraction method useful for separating elements of the actinide series of the periodic table from elements of the lanthanide series, where both are in trivalent form. The extracting solution consists of a primary lig... | 09/19/1989 |
| 4863198 | Split gland A split gland having only three parts is described. The gland has substantially the same stability to the relative motion of the constituent half-gland members during the attachment process to a female fitting as have more complicated designs. Ease of man... | 09/05/1989 |
| 4858441 | Heat-driven acoustic cooling engine having no moving parts A heat-driven acoustic cooling engine having no moving parts receives heat from a heat source. The acoustic cooling engine comprises an elongated resonant pressure vessel having first and second ends. A compressible fluid having a substantial thermal expa... | 08/22/1989 |
| 4857266 | Dispersion strengthened copper A composition of matter comprised of copper and particles which are dispersed throughout the copper, where the particles are comprised of copper oxide and copper having a coating of copper oxide, and a method for making this composition of matter.... | 08/15/1989 |
| 4845368 | Method for the substantial reduction of quenching effects in luminescence spectrometry Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the ... | 07/04/1989 |
| 4841621 | Shaft adjuster Apparatus and method for the adjustment and alignment of shafts in high power devices. A plurality of adjacent rotatable angled cylinders are positioned between a base and the shaft to be aligned which when rotated introduce an axial offset. The apparatus... | 06/27/1989 |
| 4835787 | Fusion pumped light source Apparatus is provided for generating energy in the form of light radiation. A fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The neutron flux is coupled directly with the lasing medium. The lasing medium in... | 05/30/1989 |
| 4828052 | Ultrasonic drilling apparatus Apparatus attachable to an ultrasonic drilling machine for drilling deep holes in very hard materials, such as boron carbide, is provided. The apparatus utilizes a hollow spindle attached to the output horn of the ultrasonic drilling machine. The spindle ... | 05/09/1989 |
| 4821091 | Polysilicon photoconductor for integrated circuits A photoconductive element of polycrystalline silicon is provided with intrinsic response time which does not limit overall circuit response. An undoped polycrystalline silicon layer is deposited by LPCVD to a selected thickness on silicon dioxide. The dep... | 04/11/1989 |
| 4800566 | Fusion pumped laser Apparatus is provided for generating energy in the form of laser radiation. A tokamak fusion reactor is provided for generating a long, or continuous, pulse of high-energy neutrons. The tokamak design provides a temperature and a magnetic field which is e... | 01/24/1989 |
| 4798002 | Wall thickness measuring method and apparatus An apparatus for measuring the wall thickness of a nonmagnetic article having a housing supporting a magnet and a contiguous supporting surface. The tubular article and the housing are releasably secured to the supporting surface and a support member of a... | 01/17/1989 |
| 4796995 | Optically active biological particle distinguishing apparatus The disclosure is directed to organic particle sorting and identification. High frequency pulses of circularly polarized light, alternating between left and right, intersect a fast moving stream of organic particles. Circular intensity differential scatte... | 01/10/1989 |
| 4793705 | Single molecule tracking A detection system is provided for identifying individual particles or molecules having characteristic emission in a flow train of the particles in a flow cell. A position sensitive sensor is located adjacent the flow cell in a position effective to detec... | 12/27/1988 |
| 4789537 | Prealloyed catalyst for growing silicon carbide whiskers A prealloyed metal catalyst is used to grow silicon carbide whiskers, especially in the ଲ form. Pretreating the metal particles to increase the weight percentages of carbon or silicon or both carbon and silicon allows whisker growth to begin immedia... | 12/06/1988 |
| 4784737 | Electromicroinjection of particles into living cells Method and apparatus for introducing particles into living cells. Fluorescently-stained human chromosomes are introduced into cultured, mitotic Chinese hamster cells using electromicroinjection. The recipient cells frequently survived the physiological pe... | 11/15/1988 |
| 4783322 | Method for fluorination of actinide fluorides and oxyfluorides thereof using O2 F2 Method for fluorination of actinides and fluorides and oxyfluorides thereof using O2 F2 which generates actinide hexafluorides, and for removal of actinides and compounds thereof from surfaces upon which they appear as unwanted depos... | 11/08/1988 |
| 4780608 | Laser sustained discharge nozzle apparatus for the production of an intense beam of high kinetic energy atomic species Laser sustained discharge apparatus for the production of intense beams of high kinetic energy atomic species. A portion of the plasma resulting from a laser sustained continuous optical discharge which generates energetic atomic species from a gaseous so... | 10/25/1988 |
| 4778575 | Electrodeposition of magnesium and magnesium/aluminum alloys Electrolytes and plating solutions for use in processes for electroplating and electroforming pure magnesium and alloys of aluminum and magnesium and also electrodeposition processes. An electrolyte of this invention is comprised of an alkali metal fluori... | 10/18/1988 |
| 4778263 | Variable laser attenuator The disclosure relates to low loss, high power variable attenuators comprng one or more transmissive and/or reflective multilayer dielectric filters. The attenuator is particularly suitable to use with unpolarized lasers such as excimer lasers. Beam atte... | 10/18/1988 |
| 4755326 | Electron-donor dopant, method of improving conductivity of polymers by doping therewith, and a polymer so treated Polymers with conjugated backbones, both polyacetylene and polyaromatic heterocyclic types, are doped with electron-donor agents to increase their electrical conductivity. The electron-donor agents are either electride dopants made in the presence of lith... | 07/05/1988 |
| 4743407 | Externally pressurized porous cylinder for multiple surface aerosol generation and method of generation A nebulizer for generating aerosol having small droplet sizes and high efficiency at low sample introduction rates. The nebulizer has a cylindrical gas permeable active surface. A sleeve is disposed around the cylinder and gas is provided from the sleeve ... | 05/10/1988 |
| 4735145 | High temperature detonator A detonator assembly is provided which is usable at high temperatures about 300° C. A detonator body is provided with an internal volume defining an anvil surface. A first acceptor explosive is disposed on the anvil surface. A donor assembly having an ig... | 04/05/1988 |
| 4733610 | 3-nitro-1,2,4-triazol-5-one, a less sensitive explosive A less sensitive explosive, 3-nitro-1,2,4-triazol-5-one. The compound 3-nitro-1,2,4-triazol-5-one (NTO) has a crystal density of 1.93 g/cm3 and calculated detonation velocity and pressure equivalent to those of RDX. It can be prepared in high y... | 03/29/1988 |
| 4731572 | Precision electronic speed controller for an alternating-current A high precision controller for an alternating-current multi-phase electrical motor that is subject to a large inertial load. The controller was developed for and is particularly suitable for controlling, in a neutron chopper system, a heavy spinning roto... | 03/15/1988 |
| 4729318 | Explosive plane-wave lens An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than aro... | 03/08/1988 |
| 4730170 | Virtual cathode microwave generator having annular anode slit A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit therethrough... | 03/08/1988 |
| 4727236 | Combination induction plasma tube and current concentrator for introducing a sample into a plasma An induction plasma tube in combination with a current concentrator. The rent concentrator has a substantially cylindrical body having an open end and a partially closed end which defines an aperture. A first slot extends the longitudinal length of the c... | 02/23/1988 |
| 4726829 | Fabrication of precision glass shells by joining glass rods A method for making uniform spherical shells. The present invention allows niform hollow spheres to be made by first making a void in a body of material. The material is heated so that the viscosity is sufficiently low so that the surface tension will tran... | 02/23/1988 |
| 4724127 | Method for recovery of actinides from refractory oxides thereof using O.sub. F2 Method for recovery of actinides from nuclear waste material containing sintered and other oxides thereof using O2 F2 to generate the hexafluorides of the actinides present therein. The fluorinating agent, O2 F2... | 02/09/1988 |
| 4722201 | Acoustic cooling engine An acoustic cooling engine with improved thermal performance and reduced internal losses comprises a compressible fluid contained in a resonant pressure vessel. The fluid has a substantial thermal expansion coefficient and is capable of supporting an acou... | 02/02/1988 |
| 4722026 | Thermal protection apparatus An apparatus for thermally protecting heat sensitive components of tools. The apparatus comprises a Dewar for holding the heat sensitive components. The Dewar has spaced-apart inside and outside walls, an open top end and a bottom end. An insulating plug ... | 01/26/1988 |
| 4721914 | Apparatus for unilateral generation of a homogeneous magnetic field An apparatus for unilaterally producing a substantially homogeneous magnetic field. The apparatus includes two circular electromagnet coils, a small coil and a large coil, which are coaxial with one another and which are separated by a distance equal to o... | 01/26/1988 |
| 4718321 | Repetitive resonant railgun power supply A repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. The supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capac... | 01/12/1988 |
| 4715038 | Optically pulsed electron accelerator An optically pulsed electron accelerator can be used as an injector for a free electron laser and comprises a pulsed light source, such as a laser, for providing discrete incident light pulses. A photoemissive electron source emits electron bursts having ... | 12/22/1987 |
| 4710222 | Method for removal of plutonium impurity from americium oxides and fluorides Method for removal of plutonium impurity from americium oxides and fluorides. AmF4 is not further oxidized to AmF6 by the application of O2 F at room temperature, while plutonium compounds present in the americium sample a... | 12/01/1987 |
| 4674774 | Orienting members in a preselected rotary alignment An apparatus for orienting members and for maintaining their rotary alignment during orienting members. The apparatus comprises first and second cylindrical elements, a rotation prevention element, a collar and a retainer. Each element has an outside wall... | 06/23/1987 |
| 4642476 | Reversing-counterpulse repetitive-pulse inductive storage circuit A high-power reversing-counterpulse repetitive-pulse inductive storage and transfer circuit includes an opening switch, a main energy storage coil, a counterpulse capacitor and a small inductor. After counterpulsing the opening switch off, the counterpuls... | 02/10/1987 |
| 4626281 | Hard metal composition A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 weight percent boron carbide and the remainder a metal mixture comprising from 70 to 90 percent tungsten or molybdenum, with... | 12/02/1986 |
| 4619136 | Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system An apparatus for measuring the overall decontamination factor of first and second filters located in a plenum. The first filter separates the plenum's upstream and intermediate chambers. The second filter separates the plenum's intermediate and downstream... | 10/28/1986 |
