21
Peter E Oettinger, Chunghsin Lee: Laser stimulated high current density photoelectron generator and method of manufacture. Thermo Electron Corporation, Herbert E Messenger, July 17, 1984: US04460831 (131 worldwide citation)

An electron beam generator particularly adapted for direct-write semiconductor lithography applications is disclosed which includes a photoemissive cathode, a modulable laser for illuminating the photoemissive cathode, and light optics to create an optical pattern on the cathode. The photoemissive c ...


22
John H Hughes: Alignment system and method for intra-operative radiation therapy. Siemens Medical Systems, April 28, 1998: US05745545 (129 worldwide citation)

A system and method for applying radiation therapy include utilizing a radiation applicator that is spaced apart from and mechanically independent of a radiation source. An array of targets is affixed to the radiation applicator and cameras image the targets to determine coordinates that are compare ...


23
Craig S Nunan: Multileaf collimator and compensator for radiotherapy machines. Varian Associates, Stanley Z Cole, Peter J Sgarbossa, Kenneth L Warsh, September 19, 1989: US04868843 (129 worldwide citation)

In a radiation therapy machine it is desirable to produce irregular radiation field shapes in order to shield critical organs not invaded by the tumor. A system is provided using a multileaf collimator formed of a multiplicity of heavy metal bar leaves driven relative to a pair of frames which are d ...


24
Robert A Hoffman, William J Treytl: Particle analyzer with spatially split wavelength filter. Becton Dickinson and Company, Allen W Wark, June 18, 1996: US05528045 (122 worldwide citation)

A fluorescence particle analyzer includes a flow tube through which particles marked with different fluorochromes pass from a first location to a second location. Emissions from the first and second locations are respectively imaged at respective first and second filter elements so that emissions th ...


25
Hisashi Harada: Irradiation apparatus and irradiation method. Mitsubishi Denki Kabushiki Kaisha, Leydig Voit & Mayer, January 10, 2006: US06984835 (121 worldwide citation)

An irradiation apparatus has a large irradiation field and is capable of ensuring the uniformity of a dose distribution without strengthening the performance of an irradiation field enlarging device. The irradiation apparatus includes a beam interruption part for performing a plurality of irradiatio ...


26
Natale M Ceglio, David A Markle: Maskless, reticle-free, lithography. The Regents of the University of California, Ultratech Stepper, Henry P Sartorio, November 25, 1997: US05691541 (121 worldwide citation)

A lithography system in which the mask or reticle, which usually carries the pattern to be printed onto a substrate, is replaced by a programmable array of binary (i.e. on/off) light valves or switches which can be programmed to replicate a portion of the pattern each time an illuminating light sour ...


27
Martin Annis: Reduced mass flying spot scanner having arcuate scanning lines. American Science and Engineering, Pollock Vande Sande & Priddy, June 29, 1993: US05224144 (121 worldwide citation)

A method and apparatus for creating image information for objects inspect with penetrating radiation which utilizes a flying spot scanner of reduced mass. Objects are scanned with penetrating radiation along curved scan lines. The flying spot scanner which effects such scanning has a stationary abso ...


28
Koji Matsuda, Takahide Nakayama: Particle beam irradiation system. Hitachi, Dickstein Shapiro, November 27, 2007: US07301162 (116 worldwide citation)

A particle beam irradiation system capable of ensuring a more uniform dose distribution at an irradiation object even when a certain time is required from output of a beam extraction stop signal to the time when extraction of a charged particle beam from an accelerator is actually stopped. The parti ...


29
Steven A Johnson: Multiple-phase flowmeter and materials analysis apparatus and method. J Winslow Young, H Ross Workman, Rick D Nydegger, October 14, 1980: US04228353 (115 worldwide citation)

An apparatus and method for elemental analysis and non-invasive measurement of the mass flow rate and/or density distribution of a multiple-phase system. The apparatus includes at least two X-ray sources, transmission detectors for the X-ray sources, fluorescence detectors, and collimators all of wh ...


30
Louis N Koppel: X-ray thickness gauge. Oryx Instruments and Materials, Thomas Schneck, April 8, 1997: US05619548 (114 worldwide citation)

A monochromator positioned in the path of a plurality of X-rays to simultaneously impinge the plurality of X-rays onto a thin-film at various angles of incidence, typically greater than a critical angle .psi..sub.c. The monochromator may be cylindrically or toroidally shaped, defining two focal area ...



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