21
Gerald T Volpe, Leonard S Laskoski, Ralph J Amodeo, William J Swanson, Jerome D Gottesman: Sample-and-hold hybrid active RC filter. The Perkin Elmer Corporation, Giarratana, E T Grimes, T P Murphy, July 12, 1983: US04393352 (42 worldwide citation)

A discrete-time analog filter for eliminating a variable frequency carrier of an amplitude-modulated signal. The filter comprises a plurality of unit delay circuits, each of which is sampled at a rate which varies in proportion to the frequency of the carrier so as to automatically tune the filter's ...


22
Timothy A Brunner: Overlay test measurement systems. The Perkin Elmer Corporation, T P Murphy, E T Grimes, October 9, 1984: US04475811 (42 worldwide citation)

This invention relates to overlay test measurement systems which are useful for testing lithographic instruments used in making microcircuits, which includes a single second-level pattern set in the middle of a checkerboard-like arrangement of first level patterns alternating with opaque patterns, t ...


23
Richard T Smyth, Raymond A Zatorski: Plasma spray gun having a gas vortex producing nozzle. Metco, F L Masselle, E T Grimes, J D Crane, March 19, 1985: US04506136 (42 worldwide citation)

A plasma flame spray gun suitable for being constructed physically smaller than comparable power prior art plasma flame spray guns. The gun includes a nozzle having a tapering portion on the inlet side thereof. A cathode with a flat tip is positioned to at least partially extend into the tapering po ...


24
Peter J Morrisroe: Power system for inductively coupled plasma torch. The Perkin Elmer Corporation, H S Ingham, E T Grimes, April 4, 1989: US04818916 (42 worldwide citation)

An induction plasma system comprises a torch and an induction coil. A sample substance is injected into the plasma at an axial position that is adjustable while the plasma is being energized. The plasma-forming gas flows through the induction coil prior to passing through the plasma torch. A piezoel ...


25
Mitchell R Dorfman, Subramaniam Rangaswamy, Josph D Reardon: Thermal spray iron alloy powder containing molybdenum, copper and boron. Perkin Elmer Corporation, Herbert S Ingham, F L Masselle, E T Grimes, April 18, 1989: US04822415 (41 worldwide citation)

A novel iron based alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 0 to 40% chromium, 1 to 40% molybdenum, 1 to 15% copper, 0.2 to 5% boron, and 0.01 to 2% carbon; the balance being incidental impurities and at least 30% iron, wit ...


26
Alan M Ganz, David H Tracy, Robert A Hoult: Standardizing and calibrating a spectrometric instrument. The Perkin Elmer Corporation, H S Ingham, E T Grimes, J R Wahl, April 12, 1994: US05303165 (40 worldwide citation)

A spectrometric instrument which exhibits an intrinsic profile for a sharp spectral line produces profile data for narrow spectral lines. The spectral lines are effected with a high finesse etalon of gold coated polymer. A transformation filter is computed for transforming the profile data to a gaus ...


27
Subramaniam Rangaswamy, John H Harrington: Corrosion and wear resistant alloy. Perkin Elmer Corporation, H S Ingham, F L Masselle, E T Grimes, September 8, 1987: US04692305 (35 worldwide citation)

A novel alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 2 to 25% chromium, 5 to 30% molybdenum, 3 to 15% tungsten, 2 to 8% copper, 2 to 8% boron, and 0.2 to 2% carbon; the balance being incidental impurities and at least 30% of a ...


28
Subramaniam Rangaswamy, John H Harrington: Zirconium oxide powder containing cerium oxide and yttrium oxide. The Perkin Elmer Corporation, H S Ingham, F L Masselle, E T Grimes, July 8, 1986: US04599270 (35 worldwide citation)

A flame spray material for producing a low thermal conductivity ceramic coating is comprised of a homogeneous ceramic composition formed of zirconium oxide, cerium oxide and yttrium oxide. The composition is preferably in the form of composite particles each of which contains a plurality of subparti ...


29
Daniel J Gordon: Hybrid valving system for varying fluid flow rate. The Perkin Elmer Corporation, H S Ingham, E T Grimes, J R Wahl, July 19, 1994: US05329965 (34 worldwide citation)

In a fluid valving system, binary fluid control lines are connected in parallel between a common fluid inlet and a common fluid outlet. Each line has a binary valve and a metering orifice for passing a predetermined rate of fluid flow. The rates are in a geometric progression in factors of two. An a ...


30
Thomas W Barnard: Detector for a spectrometer. The Perkin Elmer Corporation, H S Ingham, E T Grimes, April 11, 1989: US04820048 (34 worldwide citation)

A novel solid state array detector is useful in an optical spectrometer of the type that includes a crossed dispersion system receptive of radiation for producing a pair of two dimensional displays of spectral lines characteristic of at least one atomic element. One display is ultraviolet and the ot ...



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