Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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 |
| 4648057 | Robust iterative technique for high-resolution spatial processing and spectral estimation A nonlinear technique for high-resolution data processing produces high-rlution power spectra from the output of a conventional processor. First, a "guess" of the spectral estimate is formed. Then the spectral estimate is convolved with the system respon... | 03/03/1987 |
| 4644505 | Broadband matching network A broadband matching network for a Helmholtz resonator transducer is a series RL matching network capable of withstanding a high power level. The usable acoustic broadwidth is expanded to produce a symmetrical output over a broad frequency band.... | 02/17/1987 |
| 4639675 | Superconducting conductivity anomaly detection system A conductivity anomaly detection system uses a rotating superconducting met to generate a known source field and an integrated detection system rotating with the superconducting magnet to detect anomalies in the generated source field caused by nearby co... | 01/27/1987 |
| 4620733 | Shipboard internal locking system A locking bolt system for locking shipboard water tight doors, hatches and cuttles comprising plural bolts with racks thereon driven by pinions rotated by a drive shaft. Rotation of the drive shaft is controlled by a contoured locking disk which is locked ... | 11/04/1986 |
| 4611929 | Satellite method for measuring sea surface temperature A satellite method for measuring sea surface temperature uses simultaneous overage by two satellites in the same spectral window plus a simplified atmospheric radiative transfer model. A geostationary satellite and any polar orbiting satellite provide near... | 09/16/1986 |
| 4480916 | Phase-modulated polarizing interferometer An interferometer for measuring optical surfaces which is capable of very high sensitivity. A HeNe laser light is converted into a circular polarized beam, spatially filtered and collimated. The light beam is passed through a photoelastic modulator for mo... | 11/06/1984 |
| 4338603 | Self adaptive correlation radar A coherent radar system for using the effects of doppler shift on the disbuted spectrum of a pulse modulated carrier to produce a harmonic relationship between doppler side bands at the frequency of the transmitted pulse repetition frequency. Correlation... | 07/06/1982 |
| 4321871 | Target detecting device A passive target detecting system for discriminating against both doppler d continuous wave off-target radars. A signal from the missile guidance system representing the pulse repetition frequency of the target being tracked is combined in a coincidence c... | 03/30/1982 |
| 4320703 | Target detecting device A passive target detecting system for discriminating against off-target rrs. A signal from the missile guidance representing the pulse repetition frequency of the target being tracked is combined in a coincidence circuit with the signals received by the ... | 03/23/1982 |
| 4315609 | Target locating and missile guidance system A target locating and missile guidance system comprising reconnaissance araft equipped with laser or radar range-measuring apparatus in conjunction with a plurality of selectively predetermined ground stations. Range and altitude of the aircraft relative... | 02/16/1982 |
| 4307399 | Circuit for detecting and homing on continuous wave radar targets An apparatus for providing increased homing capabilities in a guided miss seeker against a continuous wave radar signal by compressing the received signal which effectively increases the received signal level by more than twenty decibels.... | 12/22/1981 |
| 4278976 | Remote sensing device A system for battlefield and enemy support area surveillance. An air-drop unit monitors and records on tape enemy activity, and plays back and transmits the monitored data at high speed when interrogated by a coded signal from friendly aircraft.... | 07/14/1981 |
| 4203108 | Underwater detection system 1. A system for detecting the presence and position of submerged objects below the ocean surface, comprising in combination, means for projecting a beam of electro-magnetic rays falling within the 0.4800 to 0.5800 micron wave band in the direction of an o... | 05/13/1980 |
| 4203110 | Microwave proximity fuze requiring no warm-up time after being activated 1. In a microwave proximity fuze that can be activated within a few millionds prior to intercept of a target, the combination comprising: (a) a semiconductor frequency modulated microwave generator including a transistor power amplifier, (b) a power supply fo... | 05/13/1980 |
| 4201987 | Method for determining antenna near-fields from measurements on a spherical surface A method for determining antenna near-fields from measurements on a spherical surface. Phase and intensity values are measured by scanning a probe antenna over a spherical surface. The method applies both to planar or conformal antennas. The spherical sur... | 05/06/1980 |
| 4200873 | Folded tapered coaxial cavity-backed annular slot antenna A low profile transmitting antenna consisting of a circular slot in a coal cavity that is folded several times. The last inner fold of the coaxial cavity is loaded with the tuning coil. The tuning coil can in the alternative be connected in series with t... | 04/29/1980 |
| 4194204 | High resolution microwave seeker An active microwave seeker for missile guidance against ships or permanent and targets. Frequency agility and pulse time compression are employed as means to provide a capability for tracking small targets in heavy sea clutter, to reduce target angular sci... | 03/18/1980 |
| 4194021 | Microwave InP/SiO2 insulated gate field effect transistor An InP/SiO2 insulated gate field effect transistor which exhibits power gain at microwave frequencies is manufactured by using an n-type epitaxial semiconducting InP film on a semi-insulating InP substrate and depositing a pyrolytic silicon dio... | 03/18/1980 |
| 4185560 | Fore and aft fuzing system 1. In a guided missile fuze system that has optimum kill probability against all sizes of targets, the combination comprising: (a) a fuzing channel for generating an output pulse in response to a received target signal after a predetermined time delay from the... | 01/29/1980 |
| 4185273 | Data rate adaptive control device for Manchester code decoders An automatic means for decoding a wide data range of Manchester code data. Variable delay means are provided for the Manchester code decoder which are digitally controlled in response to the output of a data rate sensing circuit that provides a digital eq... | 01/22/1980 |
| 4177468 | Inflatable cavity-backed annular slot transmitting antenna A transmitting antenna that can be inflated with air or a liquid dielectric nd floated in seawater. It consists of a cuplike cavity backing a radiating annular slot antenna. It can be used to communicate to submarines or surface ships or as a navigation tr... | 12/04/1979 |
| 4173000 | Simulated VLF/LF noise generator A reliable, repeatable and stable generator capable of producing noise with nown or given amplitude probability distributions up to 96 dB dynamic range, commonly found in atmospheric noise VLF/LF frequency bands. A continuous impulse noise amplitude probab... | 10/30/1979 |
| 4171526 | Event mark decoder for use with time code generator A logic circuit for decoding parallel BCD output from a time code generator o operate an analog event marker pen on a strip chart recorder, every one minute a one second pulse, every ten minutes a ten second pulse, and every hour a sixty-one second pulse o... | 10/16/1979 |
| 4171525 | VLF loop array antenna A directional loop array antenna for very low frequency (VLF) reception. array comprises four closely spaced loop antennas forming a unidirectional reception pattern with a main beam of less than 43° between half power points. The array combines two do... | 10/16/1979 |
| 4166782 | Method of anodically leveling semiconductor layers A method for the thinning and automatic leveling of layers of a semicondur for use in device fabrication applications. The method is to be employed with anodic thinning wherein a conducting semiconductor layer on a high resistivity substrate is placed in... | 09/04/1979 |
| 4164753 | Dual pyroelectric vidicon infrared camera Two pyroelectric vidicons are adapted to alternately receive infrared ene radiated from an object by means of a rotating half circle mirror and fixed mirror arrangement. The alternations of the infrared energy received between the two vidicons are synchr... | 08/14/1979 |
| 4161739 | Microwave InP/SiO2 insulated gate field effect transistor An InP/SiO2 insulated gate field effect transistor which exhibits power gain at microwave frequencies is manufactured by using an n-type epitaxial semiconducting InP film on a semi-insulating InP substrate and depositing a pyrolytic silicon dio... | 07/17/1979 |
| 4125788 | Voltage level shifting device A voltage level shifting device for interfacing systems using positive logic levels and systems using negative logic levels. The circuit is so configured that the output of the device can be connected in parallel with a similar device in wired-OR operatio... | 11/14/1978 |
| 4125809 | Digital C/kT meter A digital C/kT meter for measuring the ratio of carrier power to noise po in a one Hz bandwidth and provide the results to a continuous read-out digital display. The circuit receives an input signal from the i-f amplifier prior to demodulation. The signa... | 11/14/1978 |
| 4125893 | Integrated refractive effects prediction system A method and means of assessing the effects of the lower atmosphere on the performance capabilities of a variety of electromagnetic systems. Environmental data is entered manually into a computer by means of a keyboard or on digital tapes in cassette form... | 11/14/1978 |
| 4117588 | Method of manufacturing three dimensional integrated circuits A method of manufacturing three dimensional integrated circuits from compatible co-fireable materials by extruding batched co-fireable materials to form blocks of specified cross-sections, selecting and stacking cross-section of various widths from differ... | 10/03/1978 |
| 4112394 | Method and means of link coupling with separate control of link reactance and coupling coefficient A method and means of link coupling to a tuned circuit in which the link ctance and the coupling coefficient are separately controlled. Mutual and direct coupling is utilized to effect this result.... | 09/05/1978 |
| 4102574 | Method and means of monitoring the quality of a fluid dielectric A method and means of monitoring the quality of a fluid dielectric capacitor by measuring the Kerr signal of a dielectric fluid which has the desired dielectric and breakdown properties and continually measuring the Kerr signal of the same fluid dielectri... | 07/25/1978 |
| 4100541 | High speed manchester encoder High speed manchester encoding is provided by latching input data by means f a first clock pulse to provide a synchronized data source. This synchronized data is latched and inverted in a second latch circuit by a second clock pulse 180° out of phase with... | 07/11/1978 |
| 4079309 | Method for determining changes in earth resistivity by measuring phase difference between magnetic field components Method and apparatus for detecting tunnels beneath an area of the earth's rface wherein an oscillator couples a current into a linear conductor at the earth's surface to generate a magnetic field in the earth beneath the area. Phase angle measuring means ... | 03/14/1978 |
| 4075583 | Low loss tuneable filter A low loss tuneable RF filter including a parallel plate variable capacitor nd a helical resonator within an extension of the resonator shield. The capacitor stator is supported on an insulator above one end of the helix while the rotor is mounted between ... | 02/21/1978 |
| 4072950 | LF/MF navigation system A navigation aid comprises two transmitters transmitting signals in the LF/MF range (250 kilohertz-490 kilohertz) and a receiver indicator for receiving each of the transmitted signals, translating them to a common frequency, and indicating the phase diff... | 02/07/1978 |
| 4068237 | System for locating a radar transmitter A system for obtaining the range and bearing of the location of any radar transmission with a minimum of received data (one pulse). Three receiving systems spaced apart from each other receive signals from the radiating source. Solving three simultaneous ... | 01/10/1978 |
| 4050819 | Undersea ranging-communications from altitude via laser An optical means for detecting and/or communicating with underwater objects rom airborne platforms wherein a number of laser sources are collimated so as to illuminate a particular portion of the ocean surface from the airborne platform. Thereafter, use is... | 09/27/1977 |
| 4051437 | Method and apparatus for semiconductor profiling using an optical probe A method and apparatus of determining defects in semiconductors, by scann with small spot of light. As the semiconductor is scanned, a voltage is generated which may be used to indicate gross defects as well as the reduction in carrier lifetime due to th... | 09/27/1977 |
