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| Number | Title | Issue Date |
| 4571036 | Reflecting telescope with correcting lens A reflecting telescope is provided in which a meniscus lens corrects for coma of the primary parabolic reflecting mirror, and also for coma and spherical aberration of an eyepiece, when an eyepiece is used. The meniscus lens may be formed from a plano-con... | 02/18/1986 |
| 4522193 | Solar collector device A solar collector is provided in which a focussing element precisely focusses solar radiation upon a collecting region of a collecting element during all times of the day, without necessitating daily motion of the focussing element. The collecting region ... | 06/11/1985 |
| 4494869 | Apparatus and method for photometric measurement of oil present on human skin A photometric skin condition analyzer is provided which exploits the light refraction and Rayleigh scattering from small particles, such as droplets of oil, deposited on optically smooth sampling surfaces of a sampling pellet. Light emitted from an optica... | 01/22/1985 |
| 4473065 | Solar collector device A solar collector is provided in which a focussing element precisely focusses solar radiation upon a collecting region of a collecting element during all times of the day, without necessitating daily motion of the focussing element. The collecting region ... | 09/25/1984 |
| 4403147 | Apparatus for analyzing liquid samples with a mass spectrometer Apparatus is provided for analyzing liquid samples by a mass spectrometer. A stream of liquid droplets of the sample is formed by a probe which expels the droplets into a desolvation chamber. The droplets are evaporated in the desolvation chamber and the ... | 09/06/1983 |
| 4398992 | Defect free zero oxide encroachment process for semiconductor fabrication A method for local oxideation of a semiconductor using only conventional large scale integration (LSI) fabrication techniques is provided which results in an oxide layer without the formation of the so-called "bird's beak" structure and no process or stru... | 08/16/1983 |
| 4396997 | Liquid crystal information storage and retrieval system An optical erasable thermally addressed, liquid crystal information storage and retrieval system is disclosed having an information density and the order of 107 bits/cm2 while using liquid crystal cell thickness of relatively standar... | 08/02/1983 |
| 4370728 | Static stimulus tester for microprocessor systems The present invention provides a device which takes the place of the microprocessor in a microprocessor-based system, and which provides the user with manual control and monitoring of the logic level of each separate input or output pin corresponding to t... | 01/25/1983 |
| 4322838 | Dynamic focus adjustment for transmissive or reflective optical disc memory systems An optical disc reader is provided in which automatic focussing is achieved by movements of elements completely removed from the moving head which travels across the optical disc.... | 03/30/1982 |
| 4283857 | Spindle-height gage and method of calibration A spindle-height gage is provided for measuring the height of one or more spindles in a tape recorder. The gage includes a pair of indicators rigidly mounted to a stable base configured for insertion into the tape recorder in lieu of a cassette. Upon inse... | 08/18/1981 |
| 4284467 | Method for making semiconductor material Useful semiconductor materials in which a p-n junction may be formed are made from compositions of the quaternary Gay In1-y As1-x Px compound alloy system having values of x and y greater than 0.005 and less tha... | 08/18/1981 |
| 4280195 | Planar and near planar magnetic bubble circuits A magnetic bubble circuit and process for the manufacture of same is disclosed in which a pattern of permalloy elements is overlaid on a substantially planar surface contiguous with the top surface of an underlying pattern of conducting elements. This str... | 07/21/1981 |
| 4280196 | Correction of zero drift, gain drift, and distortion errors in analog storage devices A system is provided in which an analog storage device stores, delays, and/or changes the time scale of an input analog waveform. The system provides an output which is corrected for the gain and offset of the analog storage device by exercising the syste... | 07/21/1981 |
| 4198694 | X-Y Addressable memory Each memory cell of an x-y addressable semiconductor memory includes a charge storage element serially connected with an I-O (bit) line through a pair of CCD-type transfer gates. One gate is responsive to x-addressing and the other gate to y-addressing. W... | 04/15/1980 |
| 4196652 | Digital electronic tuner A digital electronic tuning device is provided in which an arrangement of light-emitting diodes [LED's] or other display elements indicates when two frequencies are equal. If the frequencies are unequal, the device provides an indication of both the magni... | 04/08/1980 |
| 4192996 | Measurement of oxygen by differential absorption of UV radiation A device is provided for measuring the concentration of oxygen in a sample utilizing the differential absorption by oxygen (O2) of two closely spaced ultraviolet (UV) radiation lines. The two UV lines are preferably isotope-shifted Hg lines in ... | 03/11/1980 |
| 4178635 | Planar and near planar magnetic bubble circuits A magnetic bubble circuit and process for the manufacture of same is disclosed in which a pattern of permalloy elements is overlaid on a substantially planar surface contiguous with the top surface of an underlying pattern of conducting elements. This str... | 12/11/1979 |
| 4177084 | Method for producing a low defect layer of silicon-on-sapphire wafer A method is provided for producing a low-defect layer of silicon on a sapphire substrate. A silicon-on-sapphire (SOS) wafer is formed by initially epitaxially depositing silicon on the sapphire substrate to form a monocrystalline layer which is substantia... | 12/04/1979 |
| 4171855 | Multi-position electronic component mounting An electronic component is provided having mounting leads configured as concentric arcs centered about a desired axis of rotation. The leads may therefore be inserted into a mounting board, and the component rotated to a desired angle with respect to the ... | 10/23/1979 |
| 4163243 | One-transistor memory cell with enhanced capacitance A one-transistor memory cell is provided in which the depletion-layer capacitance of an MOS capacitor is increased by locally enhancing the substrate dopant concentration. In preferred embodiments the substrate may also be doped adjacent to the substrate-... | 07/31/1979 |
| 4160985 | Photosensing arrays with improved spatial resolution A photosensing device is provided in which selective doping of the semiconductor substrate of the device produces electric fields in the substrate which accelerate photogenerated charge carriers toward or away from the surface of the device. The probabili... | 07/10/1979 |
| 4155028 | Electrostatic deflection system for extending emitter life An electrostatic beam deflection system is provided for use in electron beam devices. In the present system several grids and an accelerating electrode are geometrically configured to direct positive ions away from an electron emitter surface. These posit... | 05/15/1979 |
| 4152606 | Waveform capture device A transient storage instrument of the charge coupled device (CCD) type captures fast analog transient signals and reproduces them at a slower rate. A number of stages of a "sampling" CCD sample and store charges representing time sampled voltages on the t... | 05/01/1979 |
| 4147571 | Method for vapor epitaxial deposition of III/V materials utilizing organometallic compounds and a halogen or halide in a hot wall system A process is provided for the VPE growth of III/V compounds such as Alx Ga1-x As in which the group III elements are transported into the reaction zone in the form of organometallic compounds in the presence of a gaseous halogen or h... | 04/03/1979 |
| 4143809 | Optical bar code reader An optical bar code reader is provided employing a dual focusing system in which a source of light is focused by a first lens to a small area of the bar code, which reflects the light back through a second lens to a detector. In preferred embodiments of t... | 03/13/1979 |
| 4141712 | Manufacturing process for package for electronic devices Semiconductor packages are manufactured according to a method which eliminates or greatly reduces the occurrence of short circuited or otherwise badly positioned leads. The method utilizes a leadframe having a bonding tip support connecting the bonding ti... | 02/27/1979 |
| 4086031 | Vapor diffusion pump A diffusion pump is provided in which an internal vacuum chamber is surrounded by regions of the pump through which working vapors flow. This configuration enables a single heating unit to heat both the working fluid of the pump and the vacuum chamber. In... | 04/25/1978 |
| 4075481 | Medical-analytical gas detector A gas analyzer is provided which is particularly suited for making transcutaneous measurement of the CO2 concentration in the blood. In accordance with one embodiment of the invention, sample gases from the body are circulated in a cavity of the dev... | 02/21/1978 |
| 4033330 | Transcutaneous pH measuring instrument A transcutaneous pH measuring device is provided in which a known volume of fluid is brought into equilibrium with body fluids through a membrane on a portion of skin whose surface layers have been stripped away. The fluid contains a pH sensitive dye. Opt... | 07/05/1977 |
| 4026240 | Liquid phase epitaxial reactor apparatus A liquid phase epitaxial reactor is provided in which a simple cycling mechanism sequentially feeds semiconductor wafers from an input stack into a deposition region and thence to an output stack. In preferred embodiments, a cam is employed to tilt the ou... | 05/31/1977 |
| 4003155 | Model aircraft and package A model aircraft is constructed from a material having a plurality of parallel channels therein, e.g., corrugated cardboard. The aircraft is formed so that all of the various side, top, and bottom panels are gently curved over the length of the fuselage t... | 01/18/1977 |
| 4003679 | High pressure pump with metering A pumping system is provided in which a low pressure metering pump injects fluid charges into a high pressure pump which in turn operates into a high pressure load. The high pressure pump is designed to always present a low pressure at its input on its in... | 01/18/1977 |
| 4000504 | Deep channel MOS transistor A semiconductor charge storage and detection device is provided in which an ion implanted conductive channel is buried between source and drain regions in the bulk of a semiconductor substrate. A charge storage region extends between the channel and the s... | 12/28/1976 |
| 3996558 | Error detection and recovery from magnetic tape Improved recovery of information from magnetic tapes is provided by storing information on the tapes in the form of a number of partitions, each containing a certain number of words. A check-sum word is included at the end of each partition. When data wor... | 12/07/1976 |
| 3994394 | Shipping package for semiconductor devices A package for flat lead transistors is provided in which a raised flange provides structural rigidity to prevent damage to the flat leads of the transistor.... | 11/30/1976 |
| 3991873 | Attaching print disc to drive in impact printers A print disc and guide are configured so that the print disc can be mounted on a driving shaft transversely to the shaft axis. Removal and replacement of the print disc are thereby facilitated.... | 11/16/1976 |
| 3987303 | Medical-analytical gas detector A gas analyzer is provided which is particularly suited for making transcutaneous measurement of the CO2 concentration in the blood. In accordance with one embodiment of the invention, sample gases from the body are circulated in a cavity of the dev... | 10/19/1976 |
| 3974523 | Speed invariant decoding of digital information from a magnetic tape A method and apparatus are provided for decoding digital information stored on magnetic tape. The "zero" and "one" bits are represented respectively on the tape by "short" and "long" distances between flux transitions. Decoding is accomplished by measuri... | 08/10/1976 |
| 3971684 | Etching thin film circuits and semiconductor chips A method is provided for etching thin film circuits or semiconductor chips to produce well defined vertically etched walls at rapid etching rates. The substrates to be etched are covered by masks and positioned on a cathode electrode enclosed in a contain... | 07/27/1976 |
| 3965468 | Logic pulser A logic pulser is disclosed which provides controlled pulses for stimulating a digital logic circuit under test. The pulser is serially programmed, e.g. by means of a manually operated push button switch to generate single pulses, continuous streams of pu... | 06/22/1976 |
