Bryan Olmstead: Bar code reader with multi-focus lens. Spectra Physics Scanning Systems, Lyon & Lyon, June 23, 1998: US05770847 (69 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 ...

Wang Gongwei, Ying Muliang, Wang Xingchun, Chen Guoquan: Process for the conversion of methanol to light olefins and catalyst used for such process. Dalian Institute of Chemical Physics, November 22, 1994: US05367100 (69 worldwide citation)

A zeolite catalyst from ZSM-5 modified with phosphorus, rare earth elements and pore structure regulator is used for methanol/dimethyl ether conversion to light olefins.

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 (69 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 ...

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 (68 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 ...

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 ...

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 ...

James R Hendershot: Polyphase switched reluctance motor. Magna Physics Corporation, Leydig Voit & Mayer, May 5, 1992: US05111095 (67 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 ...

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 (67 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 ...

Daniel K Harden, Barbara H Sauceda, Brad R Reddersen, Christopher Lenart: Dome-shaped handheld laser scanner. Spectra Physics Scanning Systems, Lyon & Lyon, July 20, 1993: US05229590 (65 worldwide citation)

A scanner including an oval-shaped handle and a round dome-shaped scanner head with a transparent scanning window above the trigger area of the dome. Markings on top of the scanner to aid with aiming, and a multi-color indicator light on top of the dome.

Joseph F Rando, Brad R Reddersen: Compact scanner module mountable to pointing instrument. Spectra Physics Scanning Systems, Lyon & Lyon, February 23, 1999: US05874722 (64 worldwide citation)

Method and apparatus for scanning items with a compact scanner which is mountable onto and/or integral with a pointing instrument. The scanner module may be equipped with an aiming beam for additional help in directing the scan line toward the object to be read. The pointing instrument may be a pen ...

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