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| Number | Title | Issue Date |
| 5590185 | Multiple phone line adaptor The present invention is a two line phone adaptor that allows two separate phone lines to be connected to and controlled by a single line DTMF phone. The two line phone adaptor has one ring detector for each line and one hold circuit for each line. The ad... | 12/31/1996 |
| 5101550 | Removable drop-through die bond frame A method and apparatus for accurately positioning a semiconductor chip onto a die bond pad region of a semiconductor package. A frame is constructed for slidable contact with peripheral walls of a semiconductor package die cavity. A frame central aperture... | 04/07/1992 |
| 5036163 | Universal semiconductor chip package Disclosed is a semiconductor chip package comprising a plurality of programmable pads located on a surface of the package, each pad being adapted for interconnection with a semiconductor chip. The package also includes a plurality of signal connectors loc... | 07/30/1991 |
| 4675058 | Method of manufacturing a high-bandwidth, high radiance, surface emitting LED A method of manufacturing an LED including a substrate with an elevated surface portion, an epitaxial blocking layer adjacent thereto, and a double-heterojunction structure thereover.... | 06/23/1987 |
| 4670886 | Receiver/driver/repeater interface A repeater circuit for repeating data on a communication channel, the repeater circuit having two receiver/driver circuits arranged in repeating fashion and having a control circuit for maintaining the receiver/driver circuits in a listening mode, for swi... | 06/02/1987 |
| 4668102 | Temperature and flow station A system for determining the flow rate and temperature of air moving through a duct including a sampling or sensing head for sampling the air moving through the duct, a flow rate sensor connected to the sensing head for providing an output signal relating... | 05/26/1987 |
| 4667193 | Addressing system for simultaneously polling plural remote stations In a contention polling arrangement wherein polling messages are transmitted by a central controller for simultaneously polling a group of remote stations, the polling message contains an address which defines the entire range of remote stations to be pol... | 05/19/1987 |
| 4660759 | Optimum start/stop dependent upon both space temperature and outdoor air temperature A system for determining the optimum stop time of an air conditioning system within a building so that energy can be conserved by shutting down the temperature control system an amount of lead time prior to end of occupancy of said building wherein said a... | 04/28/1987 |
| 4660428 | Drive train system A drive train system for rotating an axle in an external system about an axis which is perpendicular to a driven shaft. The driven shaft has a drive screw thereon and is rotatable about a fixed axis. A drive nut is located on the drive screw and is movabl... | 04/28/1987 |
| 4657597 | Chimney cleaner Disclosed is a chimney cleaner for cleaning a chimney flue wall. The cleaner comprises a plate having a scraping edge and support apparatus for suspending the plate between a weight and a flexible member.... | 04/14/1987 |
| 4624137 | Semiconductor device A semiconductor device comprising a semiconductor body having a depression formed into the first surface of the body. The device further comprises a member comprising a thermal-to-electric transducer or static electric element or electrical-to-thermal ele... | 11/25/1986 |
| 4584079 | Step shape tailoring by phase angle variation RF bias sputtering Disclosed is a method for tailoring the shape of a dielectric layer covering a step in a semiconductor device. The method comprises placing a semiconductor device comprising the step into a low pressure ionization chamber comprising a target electrode and... | 04/22/1986 |
| 4581928 | Slotted diaphragm semiconductor device A semiconductor body comprises (100) silicon having a (100) plane and a [110] direction. A depression is formed in a first surface of the semiconductor body which is substantially parallel to the (100) plane. A slotted diaphragm is located over the depres... | 04/15/1986 |
| 4576679 | Method of fabricating a cold shield A shield for limiting the radiation received by individual detectors within a detector array of an electromagnetic radiation detection system to the radiation provided to the detectors by the optics of the system. The shield comprises a member of etchable... | 03/18/1986 |
| 4571608 | Integrated voltage-isolation power supply Disclosed is an integrated voltage-isolation power supply comprising a thin film heater, a thin film thermocouple, and a thin film of dielectric. A semiconductor body supports a portion of the thin film of dielectric out of contact with the body. The thin... | 02/18/1986 |
| 4568266 | Fuel-to-air ratio control for combustion systems Disclosed is a system for reaching and maintaining a desired fuel-to-air ratio in a combustion system. The system comprises apparatus for monitoring information related to fuel-to-air ratio. The system further comprises apparatus for waiting to adjust a s... | 02/04/1986 |
| 4566026 | Integrated circuit bimetal layer Disclosed is a bimetal layer located between two portions of an integrated circuit, the bimetal layer comprising a layer of TiWN and a layer of TiN.... | 01/21/1986 |
| 4561263 | Refrigeration or heat pump system defrost Disclosed is a refrigeration or heat pump system comprising an evaporator coil and apparatus for initiating the defrost cycles of the evaporator coil at a frequency proportional to the difference between a water vapor pressure in air in the evaporator coi... | 12/31/1985 |
| 4548078 | Integral flow sensor and channel assembly Disclosed is an integral flow sensor and channel assembly comprising a flow sensor having a sensing element integral to a semiconductor body. The assembly further comprises support structure for supporting the flow sensor, the support structure having a f... | 10/22/1985 |
| 4547144 | Fuel gas control Disclosed is a fuel gas control for controlling the delivery of fuel gas. The present gas control comprises an inlet chamber having an inlet for receiving a supply of gas and an outlet chamber having an outlet for providing a supply of gas. The inlet and ... | 10/15/1985 |
| 4531267 | Method for forming a pressure sensor A pressure sensor comprising a piezoelectric material formed in a geometry which provides a piezoelectric output signal when subjected to a pressure. The piezoelectric material also has a pyroelectric output signal. The present sensor further comprises co... | 07/30/1985 |
| 4515668 | Method of forming a dielectric layer comprising a gettering material The present invention comprises a method of forming a thin film dielectric layer on a substrate. The method comprises providing a sputtering chamber having a dielectric target disposed on a target electrode. A substrate to be covered with a thin film diel... | 05/07/1985 |
| 4501144 | Flow sensor A flow sensor comprising a pair of thin film heat sensors and a thin film heater is disclosed. A base supports the sensors and heater out of contact with the base with the sensors disposed on opposite sides of the heater and closely adjacent thereto.... | 02/26/1985 |
| 4478077 | Flow sensor A flow sensor comprising a pair of thin film heat sensors and a thin film heater is disclosed. The flow sensor further comprises a semiconductor body with a depression therein and structure connecting the heater and the sensors to the body and bridging th... | 10/23/1984 |
| 4478076 | Flow sensor A flow sensor comprising a pair of thin film heat sensors and a thin film heater is disclosed. A base supports the sensors and heater out of contact with the base with the sensors disposed on opposite sides of the heater. The heater is operated at a const... | 10/23/1984 |
| 4472239 | Method of making semiconductor device A semiconductor device comprising a semiconductor body having a depression formed into the first surface of the body. The device further comprises member means comprising a thermal-to-electric or static electric element, the member means having a predeter... | 09/18/1984 |
| 4451894 | Liquid gaging system multiplexing A liquid gaging system comprising a plurality of sensors, each sensor providing a liquid measurement signal relating to a liquid depth at a particular location in a tank. The invention also comprises apparatus for selectively monitoring individual sensors... | 05/29/1984 |
| 4446372 | Detector cold shield A shield for limiting the radiation received by electromagnetic energy radiation detectors to the radiation provided to the detectors by the optics of an electromagnetic energy detection system. The shield comprises a member transparent to a predetermined... | 05/01/1984 |
| 4445384 | Piezoelectric pressure sensor A pressure sensor comprising a piezoelectric material formed in a geometry which provides a piezoelectric output signal when subjected to a pressure. The piezoelectric material also has a pyroelectric output signal. The present sensor further comprises co... | 05/01/1984 |
| 4441335 | Heat pump Disclosed is a reversible refrigeration system comprising a compressor, first and second heat exchangers, an expansion valve, three three-way valves, and apparatus for connecting the elements of the system so that the system will operate in a heating mode... | 04/10/1984 |
| 4431918 | Etchable glass cold shield for background limited detectors A shield for limiting the radiation received by individual detectors within a detector array of an electromagnetic radiation detection system to the radiation provided to the detectors by the optics of the system. The shield comprises a member of etchable... | 02/14/1984 |
| 4428529 | Flow synchronization Disclosed is a system for controlling the static pressure within a controlled space, the controlled space having a supply duct for providing air to the space and a return duct for exhausting air from the space. The system comprises apparatus for adjusting... | 01/31/1984 |
| 4424103 | Thin film deposition Disclosed is a method and apparatus for thin film deposition comprising bombarding a target obliquely in a vacuum chamber with a linear ion gun. The linear ion gun generates an ion beam which impacts the target over an area having a width substantially gr... | 01/03/1984 |
| 4411499 | Compact optical system An improved, compact optical system comprising a concave primary mirror and a convex secondary mirror. The primary mirror converges radiation to the secondary mirror. The secondary mirror comprises a lens having a first and a second surface. The second su... | 10/25/1983 |
| 4373390 | Liquid gaging system compatible with multiple characterization of each sensor A liquid gaging system comprising a sensor for providing a liquid measurement signal related to a liquid depth at a particular location in a tank. The system further comprises storage apparatus for storing data including characterization parameters, each ... | 02/15/1983 |
| 4363239 | Liquid gaging system contamination monitor The present invention is part of a liquid gaging system and comprises an apparatus for monitoring a quadrature signal from a capacitor sensor. Included is a capacitive sensor for providing a liquid measurement signal related to a liquid in a tank, the liq... | 12/14/1982 |
| 4354742 | Optical system having a dual field of view An optical system having a dual field of view. The system includes a wide-angle objective comprising a lens, a concave primary mirror, and a movable convex secondary mirror having a first position and a second position. When in the first position, the sec... | 10/19/1982 |
| 4355363 | Digital characterization of liquid gaging system sensors A characterized liquid gaging system sensor comprising sensor apparatus for determining a depth of liquid in a tank at a particular location in the tank. The sensor also includes storage apparatus for storing characterization parameters, each parameter be... | 10/19/1982 |
| 4351101 | Semiconductor device processing for readily and reliably forming electrical interconnects to contact pads An improved method of providing a semiconductor device having a semiconductor substrate containing solid state signal processing circuitry. The solid state signal processing circuitry comprises doped regions of predetermined resistivity within the semicon... | 09/28/1982 |
| 4262222 | Interruptable signal generator A circuit comprising a signal generating circuit and an interrupt enable circuit. The signal generating circuit has an input connected to receive a trigger signal and an output for generating an output signal which includes a timing cycle of known duratio... | 04/14/1981 |
