51
Joseph F Rando, H Nick Roberts, John F O Brien: Bar code scanner with asterisk scan pattern. Spectra Physics, Donald C Feix, Paul Davis, Thomas M Freiburger, July 3, 1990: US04939356 (68 worldwide citation)

A bar code scanner which preferably generates an asterisk-like scan pattern has a scanner head at the end of a flexible mount enabling operator personnel to orient the scanner head in virtually any position and direction. The scan pattern generator is compact in size, utilizing a laser diode as a so ...


52
Joseph F Rando, Henry L Schwartz: Level/plumb indicator with tilt compensation. Spectra Physics, Donald C Feix, Paul Davis, T M Freiburger, August 1, 1989: US04852265 (68 worldwide citation)

A tool for use in establishing a precise level line or plumb line or line for alignment uses a visible laser diode for projecting the line. The tool is relatively small and compact, drives the laser diode using batteries contained in the tool, and includes tilt compensation for use on surfaces which ...


53
Thomas M Baer, Mark S Keirstead: Nd-YAG laser. Spectra Physics, Donald C Feix, Thomas M Freiburger, Paul Davis, March 24, 1987: US04653056 (67 worldwide citation)

A neodymium YAG laser is pumped by a matched laser diode of high efficiency, resulting in a compact, high-efficiency and long-lifetime laser assembly. Output is in the near infrared range, but can be converted to the visible spectrum by an internal frequency doubler. A doubling crystal, which may be ...


54
Richard Cavicchi, Stephen Semancik, John S Suehle, Michael Gaitan: Application of microsubstrates for materials processing. The United States of America represented by the Secretary of Commerce, Michael S Gzybowski, October 18, 1994: US05356756 (66 worldwide citation)

Arrays of microfabricated hotplates have been used as substrate arrays for materials processing on a microscopic scale. Properties of individual elements (pixels) of the array, such as temperature and voltage bias, are controlled by addressing a given pixel with appropriate signals. Materials are de ...


55
Kenneth Bolam, James Borgen: MRI/NMR-compatible, tidal volume control and measurement systems, methods, and devices for respiratory and hyperpolarized gas delivery. Medi Physics, Robert F Chisholm, October 2, 2007: US07275540 (66 worldwide citation)

Ventilator systems include: (a) a mass flow controller; (b) a gas delivery valve in communication with the mass flow controller and configured to selectively dispense a plurality of different gases to a subject; (c) a first gas source in fluid communication with the gas delivery valve; (d) a second ...


56
John H Coleman: Method of forming semiconducting materials and barriers. Plasma Physics Corporation, October 7, 1980: US04226897 (66 worldwide citation)

In a gaseous glow-discharge process for coating a substrate with semiconductor material, a variable electric field in the region of the substrate and the pressure of the gaseous material are controlled to produce a uniform coating having useful semiconducting properties. Electrodes having concave an ...


57
James R Hendershot: Polyphase switched reluctance motor. Magna Physics Corporation, Leydig Voit & Mayer, May 5, 1992: US05111095 (66 worldwide citation)

A switched reluctance motor driven by a polyphase source includes a stator having a yoke and a plurality of evenly spaced salient poles distributed about the yoke and a rotor mounted for rotation relative to the stator having a plurality of unevenly spaced salient poles. The geometry of the stator a ...


58
Ronald A Gatten: Method of determining useful life of cartridge for an ink jet printer. Spectra Physics, Killworth Gottman Hagan & Schaeff, November 26, 1991: US05068806 (66 worldwide citation)

A computer program in the microcontroller of an ink jet printer-plotter counts the ink dots fired by the cartridge of the printer. The host system keeps the dot count in nonvolatile memory. When the number of dots corresponding to the nominal capacity of the cartridge has been fired, a message is pr ...


59
Donald S Peterson, Andrew P Taussig: Signal transition detection method and system. Spectra Physics, Killworth Gottman Hagan & Schaeff, June 7, 1988: US04749879 (66 worldwide citation)

A system and method are provided for determining the occurrence of transitions in a binary encoded analog input signal. The system includes a threshold circuit, responsive to the input signal, for generating first and second grating signals in dependence upon whether the input signal exceeds or is l ...


60
Bryan Olmstead: Bar code reader with multi-focus lens. Spectra Physics Scanning Systems, Lyon & Lyon, June 23, 1998: US05770847 (65 worldwide citation)

A method and apparatus are provided for reading bar codes or other images while reducing or eliminating the need for self-generated illumination. An image reader comprises an efficient optical collection system including an aperture with a high aspect ratio and/or a multi-focal lens or lenses. A CCD ...



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