Ajay M Madgavkar, Harold E Swift: Substoichiometric combustion of low heating value gases using different platinum catalysts. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, March 29, 1983: US04378048 (229 worldwide citation)

Low heating value gases are combusted substoichiometrically in two combustion zones in series in contact with two different supported platinum catalysts in which the concentration of platinum in the catalyst in the first zone is higher than the concentration of platinum in the second catalyst. The c ...

Marvin P Loeb: Artificial endocrine gland containing hormone-producing cells. Biotek, March 29, 1983: US04378016 (176 worldwide citation)

An artifical endocrine gland for supplying a hormone to a patient including an implantable housing placed in the body and having an impermeable extracorpeal segment and a semipermeable subcutaneous segment. A replaceable envelope containing live hormone-producing cells such as pancreatic islet cells ...

Gerhard Winzer: Device for coupling radiation into an optical waveguide. Siemens Aktiengesellschaft, Hill Van Santen Steadman Chiara & Simpson, March 29, 1983: US04378143 (174 worldwide citation)

An optical device coupling light between a first light waveguide and either a second light waveguide or a radiation source characterized by the first light waveguide having a core of a predetermined cross-sectional area, a reflective layer or mirror of a high reflectance being disposed on an angle t ...

Tapio H Murto, Stephen D Alvey: Interface circuits for connection to non-dedicated telephone lines. Northern Telecom, R John Haley, March 29, 1983: US04378470 (167 worldwide citation)

Receive and transmit paths, for example for frequency shift keyed signals, are coupled to an interface circuit including a line transformer which is permanently connected to the telephone line via a high impedance. The effect of this high impedance on received signals is counteracted by an amplifier ...

Marcel E Nimni, David T Cheung: Coating for bioprosthetic device and method of making same. Fulwider Patton Rieber Lee & Utecht, March 29, 1983: US04378224 (135 worldwide citation)

A coating and integral treatment for improving the biophysical stability of bioprosthetic devices after implantation, particularly with respect to calcification, and, specifically, a method for treating animal tissues, such as heart valves, to provide improved biophysical stability in allograft and ...

Lee K Galbraith: Scanning contaminant and defect detector. Tencor Instruments, Thomas Schneck, March 29, 1983: US04378159 (132 worldwide citation)

A scanning laser contaminant and defect detector for reflective surfaces, having a light collector for increasing sensitivity to scattered light. The collector is preferably one quadrant of a spherical shell cradled between V-shaped reflective side walls. The collector has beam entrance and exit por ...

Stephen C Wardlaw: Automatic injecting syringe. William W Jones, March 29, 1983: US04378015 (124 worldwide citation)

The hypodermic syringe of this invention is of simplified construction and employs a retracted needle contained within a housing, which needle is driven to inject a dose of medication by pressing the housing against the patient's skin. The syringe has a minimum of parts and may be easily and inexpen ...

Donald Rowley, Sheldon Perlman: Brace for injured parts of the body. Donald Rowley, March 29, 1983: US04378009 (102 worldwide citation)

An elongated, elastic tube provides a brace for wrapping about a person's knee or other part of the body. The brace is wrapped about the knee in a criss-cross fashion wherein four diagonal members intersect at four points surrounding the knee cap, i.e., top, bottom and each side. The brace is held i ...

Peter Garde: High-efficiency low-distortion amplifier. Unisearch, Brumbaugh Graves Donohue & Raymond, March 29, 1983: US04378530 (96 worldwide citation)

An amplifier system comprising at least two tracking switching regulators or a dual-output regulator, which regulators vary the voltage across the output stage at the signal or its envelope rate.

Toshio Yoshida: Method of lining inner wall surfaces of hollow articles. Kawasaki Jukogyo Kabushiki Kaisha, Wenderoth Lind & Ponack, March 29, 1983: US04377894 (94 worldwide citation)

The inner surface of a hollow article of special shape such as a pipe elbow or bellows is lined with a tightly fitted protective lining material by the steps of emplacing the lining material within the hollow article to confront the inner surface thereof, causing the temperature of the hollow articl ...