1
Masahiko Sasaki, Masao Uehara, Katsuyuki Saito, Akinobu Uchikubo, Shinji Yamashita, Takehiro Nakagawa, Akihiro Miyashita, Masahide Kanno, Katsuyoshi Sasagawa, Jun Hasegawa: Electronic endoscope apparatus with signal validity monitor. Olympus Optical, Armstrong Westerman Hattori McLeland & Naughton, December 20, 1994: US05374953 (73 worldwide citation)

In an electronic endoscope apparatus each of the signals of a plurality of systems output from at least one solid state imaging device is judged by a signal monitoring device as to whether it is normal or not. On the basis of the judged result, the processing mode corresponding to each of the signal ...


2
Masao Uehara, Akinobu Uchikubo, Jun Hasegawa, Masahiko Sasaki, Masahide Kanno, Shinji Yamashita, Katsuyoshi Sasagawa: Electronic endoscopic apparatus isolated by differential type drive means. Olympus Optical, Armstrong Nikaido Marmelstein Kubovcik & Murray, September 19, 1989: US04868647 (69 worldwide citation)

An endoscope is provided with an isolation circuit which electrically isolates the ground of the input side and of the output side from each other. The isolation circuit is provided in a signal processing circuit which processes the electrical signal obtained by conversion of the optical image obtai ...


3
Masao Uehara, Akinobu Uchikubo, Katsuyuki Saito, Masahide Kanno, Jun Hasegawa, Masahiko Sasaki, Katsuyoshi Sasagawa, Shinji Yamashita: Endoscope output signal control device and endoscope apparatus making use of the same. Olympus Optical, Armstrong Nikaido Marmelstein Kubovcik & Murray, May 22, 1990: US04928172 (69 worldwide citation)

An endoscope using a solid state imaging device characterized by comprising a solid state imaging device capable of imaging an object image, a light emitting means giving an illuminating light to said object, a first level detecting means fed with a video signal from said solid state imaging device ...


4
Katsuyoshi Sasagawa, Masahiko Sasaki, Masao Uehara, Katsuyuki Saito, Jun Hasegawa, Masahide Kanno, Akinobu Uchikubo, Shinji Yamashita: Electronic-type endoscope system having capability of setting AGC variation region. Olympus Optical, Armstrong Nikaido Marmelstein Kubovcik & Murray, August 21, 1990: US04951135 (67 worldwide citation)

An endoscope system has a signal processing circuit for converting an image signal output of a solid state imaging device into a standard image signal, a monitor for providing a display of the standard image signal, an automatic gain control circuit for outputting an image signal whose level is auto ...


5
Hiroshi Ozawa, Yoichi Hosono, Sumio Hirose, Katsuyoshi Sasagawa, Masao Imai: Optical recording medium. November 17, 1987: US04707430 (63 worldwide citation)

Disclosed herein is an optical recording medium which includes a recording layer composed of (a) an organometallic complex having an absorption maximum in the wavelength range of 600-1200 nm, (b) a resinous binder and (c) a sensitizer capable of generating radicals upon exposure to ultraviolet rays. ...


6
Yoshinobu Kanemura, Masao Imai, Katsuyoshi Sasagawa, Nobuyuki Kajimoto, Teruyuki Nagata: High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol. Mitsui Toatsu Chemicals Incorporated, Oblon Fisher Spivak McClelland & Maier, October 4, 1988: US04775733 (56 worldwide citation)

Disclosed herein are a high-refractivity plastic lens resin obtained by polymerizing under heat at least one polyisocyanate (I): ##STR1## wherein X means a hydrogen, chlorine or bromine atom or a methyl or ethyl group, Z is a hydrogen atom or a methyl group, a stands for an integer of 1-4, b is an i ...


7
Yoshinobu Kanemura, Katsuyoshi Sasagawa, Masao Imai: Casting epoxy resin, polythiol and releasing agent to form lens. Mitsui Toatsu Chemicals, Burns Doane Swecker & Mathis, December 20, 1994: US05374668 (55 worldwide citation)

The present invention relates to a polysulfide based resin lens, comprising a mixture of at least one epoxy resin having at least two epoxy groups, and at least one polythiol compound having at least two mercaptan groups, and at least one internal release agent, which is cast polymerized, and the pr ...


8
Katsuyoshi Sasagawa, Masao Uehara, Akinobu Uchikubo, Katsuyuki Saito, Masahide Kanno, Masahiko Sasaki, Takehiro Nakagawa, Jun Hasegawa, Shinji Yamashita: Endoscope automatic light control apparatus and endoscope apparatus making use of the same. Olympus Optical, Armstrong Nikaido Marmelstein Kubovcik & Murray, October 30, 1990: US04967269 (55 worldwide citation)

An endoscope automatic light control apparatus comprises an automatic light control apparatus for controlling the quantity of light incident to an imaging apparatus for imaging an endoscopic image so as to maintain a signal from the imaging apparatus substantially at a constant level. An automatic g ...


9
Yoshinobu Kanemura, Masao Imai, Katsuyoshi Sasagawa: Resin for high-refractivity lenses and lenses made of same resin. Mitsui Toatsu Chemicals Incorporated, Fisher Christen & Sabol, September 17, 1985: US04542201 (55 worldwide citation)

Disclosed herein are a resin for high-refractivity lenses, formed by copolymerizing at least one carbonate compound represented by the general formula (I): ##STR1## wherein X is a hydrogen, chlorine or bromine atom, and R is a hydrogen atom or a methyl group with at least one unifunctional monomer r ...


10
Katsuyoshi Sasagawa, Kunio Nishihara, Hiroshi Ozawa, Masao Imai: Optical recording method and media therefor. Mitsui Toatsu Chemicals Incorporated, McGlew and Tuttle, November 17, 1987: US04707425 (55 worldwide citation)

An optical recording method which comprises providing a recording layer containing a recording susbstance that has an absorption maximum in the visible and near infrared wavelength region of 600 to 1,200 nm and loses or diminishes its power to absorb visible or near infrared radiation in the aforesa ...