Tadashi Fujii, Shinji Ishida: Cardiac pacemaker using wireless transmission. Terumo Kabushiki Kaisha, Burns Doane Swecker & Mathis, May 2, 1995: US05411535 (279 worldwide citation)

A cardiac pacemaker improved to reduce the weight and size and to unburden the wearer of the pacemaker, while ensuring safe transmission of signals. The cardiac pacemaker includes a cardiac pacemaker main body 100 having at least two electrodes for detecting cardio-information, a control section for ...

Tadao Yasuzato, Shinji Ishida: Photomask and exposure method using a photomask. NEC Corporation, Sughrue Mion PLLC, March 12, 2002: US06355382 (43 worldwide citation)

Disclosed is a photomask in which contrast of light intensity of a pattern to be transferred (main pattern) is enhanced on an image plane while transfer of auxiliary pattern themselves is suppressed. The photomask, which is used in exposure to which is applied four-point illumination method for inve ...

Shinji Ishida, Tadao Yasuzato: Optical proximity correction halftone type phase shift photomask. NEC Corporation, Whitham Curtis & Witham, October 27, 1998: US05827623 (43 worldwide citation)

In a halftone type phase shift photomask, a patterned halftone layer is formed on a transparent substrate, and a light screen layer is formed on the halftone layer. A part of a mask pattern is changed from opaque to halftone, thus improving the resist pattern fidelity.

Tadao Yasuzato, Shinji Ishida: Photo mask and fabrication process therefor. NEC Corporation, Sughrue Mion Zinn Macpeak & Seas PLLC, May 12, 1998: US05750290 (19 worldwide citation)

After forming a light shielding layer 2 of ruthenium in a thickness of 70 nm and a reflection preventing layer 3 of a ruthenium oxide in thickness of 30 nm, and a photosensitive resin layer, a sililated layer is formed by electron beam lithography and sililation. Etching is performed for the photose ...

Kimiyoshi Isogai, Shinji Ishida, Toshinobu Nishi, Hidenori Sato, Kenji Yamada: Valve timing adjuster. Nippondenso, Cushman Darby & Cushman, November 6, 1990: US04967701 (18 worldwide citation)

A valve timing adjuster according to the present invention, comprises a pulley rotationally connected to one of an output shaft of engine and a cam shaft, a sleeve which is supported on the pulley, which is rotatable within a predetermined angle of rotation on the pulley and which is rotationally co ...

Fumio Iishiba, Shinji Ishida, Masatoshi Ikeda, Kunihiro Takahashi: Image reading device capable of performing shading correction. Fuji Xerox, Finnegan Henderson Farabow Garrett & Dunner, March 19, 1996: US05500745 (18 worldwide citation)

A digitized image data produced by reading a certain scanning line portion of a shading correction plate by an image sensor is stored in a buffer memory as digital data B. A digital comparator compares, on a pixel-by-pixel basis, the digital data B with new digital data A produced by reading another ...

Tadao Yasuzato, Shinji Ishida, Kunihiko Kasama, Yoko Iwabuchi: Pattern forming method. NEC Corporation, Whitham Curtis Whitham & McGinn, August 11, 1998: US05792596 (15 worldwide citation)

In a method of forming a pattern, a photo-mask including a desired pattern is provided. A photo-sensitive resin film is spin-coated on a semiconductor substrate. Subsequently, the surface of the photo-sensitive resin film is changed to have a resistivity against a development solution. Next, light i ...

Tadao Yasuzato, Shinji Ishida: Photomask used for projection exposure with phase shifted auxiliary pattern. NEC Corporation, Hayes Soloway Hennessey Grossman & Hage PC, December 21, 1999: US06004699 (13 worldwide citation)

A photomask used for a projection exposure equipment comprises a transparent substrate and a light intercepting film provided on the transparent substrate. The transparent substrate comprises a main pattern region and an auxiliary pattern region provided in a periphery of the main pattern region. Th ...

Shinji Ishida, Kazunori Matsui: Vortex pump. Nippondenso, Cushman Darby & Cushman, September 28, 1993: US05248238 (12 worldwide citation)

A housing 14 forms, together with a cover 34, an annular vortex chamber 42. An impeller 22 is provided with a disk portion 24 which is connected to a drive shaft 12 so that the impeller 22 rotates integrally with the shaft 12. The impeller 22 has an annular support portion 26 and rows of angularly-s ...

Hiroyoshi Tanabe, Shinji Ishida, Tadao Yasuzato: Photomask and method of exposure using same. NEC Corporation, Sughrue Mion Zinn Macpeak & Seas PLLC, November 21, 2000: US06150059 (12 worldwide citation)

A photomask has a plurality of main holes which pass a prescribed light beam that is shone onto positions that make up a plurality of pattern parts, at locations that are opposite a plurality of pattern parts for said semiconductor device, this photomask also having a plurality of minute auxiliary h ...