Patents by Inventor Toshiaki Takahashi

Toshiaki Takahashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4684928
    Abstract: A motion sensor unit which includes a sensor assembly for monitoring whether or not the inclination of a mobile member is in excess of a predetermined reference angle and outputting a pulse signal in case the inclination is greater than the reference angle; a detector for monitoring whether or not the duration of the pulse signal is in excess of a predetermined reference time and, in the case of any excess, outputtting a signal representing that the inclination of the mobile member is greater than the reference angle and is continuous for more than the reference time; a sensor assembly for outputting a pulse signal inverted in accordance with the value of a shock given to the mobile member; and a detector for monitoring whether or not the cycle of the pulse signal is shorter than a predetermined reference time and outputting a shock detection signal when the cycle is shorter than the reference time.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: August 4, 1987
    Assignee: Alpine Electronics Inc.
    Inventors: Toshiaki Takahashi, Tokio Suzuki
  • Patent number: 4609291
    Abstract: Disclosed is an element characteristic measuring apparatus provided with a first illuminating system for uniformly illuminating the whole area of an element, a second illuminating system for providing an imaging illumination to a part area of the element, and an output detector for detecting the output of the illuminated element.
    Type: Grant
    Filed: March 14, 1984
    Date of Patent: September 2, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiaki Takahashi
  • Patent number: 4608580
    Abstract: A heat-sensitive recording material comprising a support and, formed thereon, a heat-sensitive color-forming layer comprising a colorless or light-colored leuco dye as a color former and a phenolic compound as a color developer, wherein the color developer comprises 3,3'-diallyl-4,4'-dihydroxydiphenylsulfone as an effective ingredient.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: August 26, 1986
    Assignee: Nikka Chemical Industry Company Ltd.
    Inventors: Fukuji Ikeda, Toshiaki Takahashi
  • Patent number: 4541702
    Abstract: Automatic focus adjusting device comprising a range finding means which generates a signal corresponding to a distance to an object to be photographed; means for setting a photographing lens to a position corresponding to the output signal from the range finding means; a primary judging means which judges whether or not a diaphragm setting is within the range in which fixed focus photographing is possible or not; and a secondary judging means which judges whether an output signal from the range finding means is at a level capable of operating an automatic focusing means, wherein the secondary judging means judges only when the primary judging means judges that a diaphragm setting is not within the range in which fixed focus photography is possible and the automatic focusing means is operated only when the secondary judging means judges the output signal is at a level capable of operating the automatic focusing means.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: September 17, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Haruhiko Momose, Toshiaki Takahashi, Yasushi Hoshino, Kohji Matsushima, Michio Yagi
  • Patent number: 4536471
    Abstract: An optical information recording medium for recording and reproducing information by way of applying high density energy beams to a reflective recording layer on a support, said recording layer comprising a hydrophilic colloid; a compound capable of producing a water-insoluble copper complex; and reflective fine particles consisting essentially of copper. A process for manufacturing said optical information recording medium is also provided.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: August 20, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shinichi Nishi, Taxey Satoh, Fumio Shimada, Toshiaki Takahashi
  • Patent number: 4441810
    Abstract: A range finder for measuring the distance of an object to be measured by the steps of radiating the spot light to the object, forming an image of the reflected ray of light by image forming means and measuring the distance of the object from the output of an element which is disposed at a position substantially corresponding to the image forming position and of which output varies in accordance with the light-receiving position on the light-receiving surface. PSD are used as the element. A focussing detector which includes a semiconductor position detection element PSD placed at a position corresponding to the film surface in a camera or the like and detects the focussing state on the basis of the electric output from the semiconductor position detection element PSD.
    Type: Grant
    Filed: July 9, 1981
    Date of Patent: April 10, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Haruhiko Momose, Toshiaki Takahashi, Yasushi Hoshino
  • Patent number: 4433049
    Abstract: Disclosed is a method for preparing a light-sensitive cuprous halide emulsion which comprises reducing cupric ions by an ascorbic acid derivative represented by the general formula: ##STR1## wherein R is a hydrogen atom or a hydroxyl group, and n is an integer of 1 to 4, provided that R is a hydroxyl group when n is 1, or its alkali metal salt, in the presence of halogen ions.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: February 21, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Noboru Itoh, Toshiaki Takahashi, Keiji Ogi, Atsushi Kamitakahara
  • Patent number: 4427762
    Abstract: An image-forming method wherein a photosensitive material comprising a support having a photosensitive copper (I) halide emulsion that contains silver halide and which has grains of copper (I) halide crystal dispersed in a binder is subjected to imagewise exposure and development with an alkaline solution is disclosed. The imagewise exposure is effected either in a dry or wet state. The alkaline solution contains compounds selected from at least two of the following three groups: (A) a group consisting of .alpha.-amino acids, .alpha.
    Type: Grant
    Filed: December 15, 1982
    Date of Patent: January 24, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshiaki Takahashi, Noboru Itoh
  • Patent number: 4010036
    Abstract: An improved silver halide photosensitive material of the lith-type is disclosed which is suitable for an infectious development in order to obtain high contrast images with high sensitivity. A method for developing the material is also disclosed. The material comprises silver halide grains containing at least 50 mole per cent of silver chloride, less than 40 mole per cent of silver bromide and less than 5 mole percent of silver iodide based on total silver halide, the average size of the grains being 0.05 to 0.5 microns in diameter. The material further comprises a compound represented by the following general formula I or II ##STR1## wherein R is alkyl, aryl, aralkyl or acyl; R' is hydrogen or --OR; and R" is hydrogen or acyl.
    Type: Grant
    Filed: May 22, 1975
    Date of Patent: March 1, 1977
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tsuneo Suga, Ken-ichi Kishi, Shinobu Korematsu, Masaru Kanbe, Toshiaki Takahashi
  • Patent number: 4010034
    Abstract: An improved method for adjusting bromide ion concentration in a photographic processing solution is disclosed in which the processing solution is contacted with particles of an insoluble bismuth compound.
    Type: Grant
    Filed: July 8, 1975
    Date of Patent: March 1, 1977
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tsuneo Suga, Masaru Kanbe, Shinobu Korematsu, Toshiaki Takahashi, Ken-ichi Kishi