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 (71 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 ...

Thomas M Baer, Mark S Keirstead: Laser diode pumped solid state laser with miniaturized quick disconnect laser head. Spectra Physics, Paul Davis, May 12, 1987: US04665529 (71 worldwide citation)

A compact laser head for a solid state laser has a miniaturized laser rod and output coupling mirror which form a miniaturized laser cavity. A miniaturized frequency doubler crystal placed in the cavity provides frequency doubled output. The laser head is connected by an optical fiber to a separate ...

Joseph F Rando: Automatic plumb and level tool. Spectra Physics, Thomas M Freiburger, December 31, 1991: US05075977 (71 worldwide citation)

An automatic plumb, level and pointing tool uses a visible laser diode to project a beam in any of three different modes through a beam exit window. The tool, approximately the size and shape of a tape measure, can be placed on one edge to project a tilt-compensated vertical beam. Placed on another ...

Brett A Feddersen, Enrico Gratton, David W Piston: Method and means for parallel frequency acquisition in frequency domain fluorometry. Research Corporation Technologies, Scully Scott Murphy & Presser, October 26, 1993: US05257202 (71 worldwide citation)

A digital frequency domain fluorometer utilizing a computer-controlled digital data acquisition system is use for the study of fluorescence and phosphorescence phenomena in the bio-chemical, biological and bio-physics arts. The computer is used for the direct collection of data, as well as for the f ...

Donald S Peterson, Andrew P Taussig: Signal transition detection method and system. Spectra Physics, Killworth Gottman Hagan & Schaeff, June 7, 1988: US04749879 (70 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 ...

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.

Louis A Kamentsky, Isaac Klinger: Combined particle sorter and segregation indicator. Bio Physics Systems, Curtis Ailes, October 5, 1976: US03984307 (69 worldwide citation)

Small particles to be sorted are entrained in a stream of fluid and particle differences are detected to control a sorter located downstream. The sorter is effective to switch the particle carrying fluid to one of two different paths determined by the particle differences to thereby accomplish the s ...

Joseph F Rando, Ilya M Fishman: Temperature operated gas valve. Spectra Physics, Donald C Feix, Paul Davis, Thomas M Freiburger, August 21, 1990: US04949742 (69 worldwide citation)

A gas valve which is particularly useful in a laser gas fill system requiring repeated fillings includes a conduit positioned between high and low pressure gas regions. Within the conduit is a restriction, and this restriction is closed by a meltable solid material. When the valve is to be opened, h ...

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 ...

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