John William Goodfellow, John Joseph O Connor, Nigel Graham Shrive: Prosthetic joint device. National Research Development Corporation, Cushman Darby & Cushman, April 25, 1978: US04085466 (516 worldwide citation)

A prosthetic joint device is provided with first and second components respectively providing convex and relatively flat articulatory bearing surfaces, and a third component is located between the former components and has two surfaces which are complementary to and engage the convex and flat surfac ...

Peter R Hall: Motion artefact rejection system for pulse oximeters. National Research Development Corporation, Howard F Mandelbaum, September 11, 1990: US04955379 (260 worldwide citation)

A pulse oximeter apparatus characterized in that it comprises a bandpass filter adapted selectively to exclude motion artefact from wanted signal is disclosed.

Hugh A O Hill, David J Page, Nicholas J Walton, David Whitford: Surface-modified electrode and its use in a bioelectrochemical process. National Research Development Corporation, Murray and Whisenhunt, April 7, 1987: US04655885 (259 worldwide citation)

In a bioelectrochemical process in which the electrons are transferred directly, without use of a mediator, such as a redox dye or cofactor, between an electrode and an electroactive biological material, such as an enzyme or a protein, in either direction, rapid electron transfer has previously been ...

Christopher R Lowe, Fergus G P Earley: Diagnostic device incorporating a biochemical ligand. National Research Development Corporation, Oblon Fisher Spivak McClelland & Maier, December 31, 1985: US04562157 (229 worldwide citation)

A device useful in diagnostics in which a biochemical species is attached to the surface of a sensor, especially to the gate of a field effect transistor. In such a "BIOCHEMFET" it has been a problem to attach two or more biochemical species to the surface of the sensor, especially to the gates of a ...

Irving J Higgins, Hugh A O Hill: Enzymatic processes. National Research Development Corporation, Oblon Fisher Spivak McClelland & Maier, March 9, 1982: US04318784 (204 worldwide citation)

There are provided processes for carrying out enzymatic reactions, especially processes for the oxidative or reductive transformation of organic compounds catalyzed by enzymes, in which the enzymes require a continuing supply of reducing equivalents to regenerate reduced enzyme species in enzymatica ...

Donald W Davies: Apparatus and methods for granting access to computers. National Research Development Corporation, Cushman Darby & Cushman, January 17, 1989: US04799258 (177 worldwide citation)

When a computer user is granted access to certain capabilities of a computer he is often given a password signifying these capabilities. A problem arises in that unauthorized users may copy the password and so gain access to the capabilities. In the present invention an enciphered message relating t ...

Saleh Bahaa Botros Seedhom: Knee joint prosthesis. National Research Development Corporation, Cushman Darby & Cushman, June 18, 1974: US3816855 (171 worldwide citation)

A prosthetic knee joint device comprises a femoral component in the form of a shell member having two condylar portions with major convex bearing surfaces areas, which portions are bridged at one end by a portion defining a trough between the convex areas. An associated tibial component has similar ...

David Annis, Malcolm C Brown, John R Sutherst: National Research Development Corporation, Cushman Darby & Cushman, August 15, 1989: US04857041 (166 worldwide citation)

A prosthetic device (10) suitable for use in the treatment of stress incontinence in women by location as a cuff around the urethra, to elevate the bladder following prolapse, comprises a body (11) composed predominantly of a cross-linked synthetic polymer hydrogel having a water content of the orde ...

Michael Elliott, Norman Frank Janes, David Allen Pulman: Insecticides. National Research Development Corporation, Cushman Darby & Cushman, May 17, 1977: US04024163 (158 worldwide citation)

New insecticides are of formula: ##STR1## wherein R.sup.1 represents hydrogen or a methyl group; R.sup.2 represents hydrogen or a halogeno or lower alkyl group; R.sup.3 represents hydrogen or a halogeno, lower alkyl (which is different to R.sup.2 when R.sup.2 represents a lower alkyl group) or carbo ...

Michael J Street, John A Benson, John A Marchant, Arthur L Wilkin, Clive J Allen: Automatic milking of animals. National Research Development Corporation, Cushman Darby & Cushman, December 3, 1991: US05069160 (152 worldwide citation)

An arrangement to apply a milking apparatus to the udder of an animal at a milking point including a store for the apparatus, a handling device having an elongate arm to support and move the apparatus between an apparatus acquisition point and the milking point, a stall to define a specific space fo ...