Patents by Inventor Masakazu Takei

Masakazu Takei 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).

  • Publication number: 20090304237
    Abstract: A biometric authentication apparatus having a simple configuration, able to easily focus on a fingerprint or a vein or other blood vessel pattern and able to clearly capture an image of the same, able to prevent forgery, and in addition able to realize high precision authentication, which biometric authentication apparatus 100 having a transparent plate 110 formed by for example glass or plastic for placement of the finger of the authenticated person, that is, the inspected specimen OBJ, downward in the figure (surface where fingerprint is located facing downward), a fingerprint capturing use illumination apparatus 120, a vein capturing use illumination apparatus 130, and an image capturing apparatus 140, which image capturing apparatus 140 has an imaging lens apparatus capturing a dispersed image of an object passing through the optical system and phase plate, an image processing apparatus generating a dispersion-free image signal from a dispersed image signal from the imaging element, and an object approxim
    Type: Application
    Filed: June 28, 2006
    Publication date: December 10, 2009
    Applicants: KYOCERA CORPORATION, KYOCERA OPTEC CORPORATION
    Inventors: Seiji Yoshikawa, Masayuki Satou, Masakazu Takei, Toshiya Nagao
  • Publication number: 20080252862
    Abstract: A light reflector which can be manufactured easily by using a plastic base material that is light weight and low cost and has high reflectivity, and a method for manufacturing the same. The light reflector comprises a plastic base material 50 of which thermal deformation temperature is 130° C. or higher, and a reflecting film 52 containing silver and formed on the surface of the base material, wherein said plastic base material 50 is a molded article of thermosetting resin and the reflecting film has a smooth surface with PV (peak-to-valley) roughness of 0.5 ?m or less without sharp protrusions and reflectivity of the reflecting film is 96% or more.
    Type: Application
    Filed: November 2, 2005
    Publication date: October 16, 2008
    Applicants: KYOCERA CHEMICAL CORPORATION, KYOCERA OPTEC CO., LTD.
    Inventors: Takahiro Okura, Masakazu Takei, Nobumitsu Hamana, Hisao Aoki, Fujio Owada, Naoki Amai
  • Publication number: 20060137614
    Abstract: The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98 or higher.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 29, 2006
    Inventors: Takahiro Okura, Kazuya Shimizu, Masakazu Takei
  • Publication number: 20060141267
    Abstract: The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98 or higher.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 29, 2006
    Inventors: Takahiro Okura, Kazuya Shimizu, Masakazu Takei
  • Publication number: 20060141168
    Abstract: The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98.or higher.
    Type: Application
    Filed: February 16, 2006
    Publication date: June 29, 2006
    Inventors: Takahiro Okura, Kazuya Shimizu, Masakazu Takei
  • Patent number: 7033679
    Abstract: The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98 or higher.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: April 25, 2006
    Assignee: Kyocera Optec Co., Ltd.
    Inventors: Takahiro Okura, Kazuya Shimizu, Masakazu Takei
  • Publication number: 20020126265
    Abstract: The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98 or higher.
    Type: Application
    Filed: January 24, 2002
    Publication date: September 12, 2002
    Inventors: Takahiro Okura, Kazuya Shimizu, Masakazu Takei
  • Patent number: 5175160
    Abstract: An antimicrobial agent for animals is disclosed. The agent comprises as an effective component a racemate of a 3S-type compound of a pyrido[1,2,3-de][1,4]benzoxazine derivative represented by the formula (I): ##STR1## wherein R is a C.sub.1-6 alkyl group, provided that R cannot be a methyl group when the pyrido[1,2,3-de][1,4]benzoxazine derivative is a racemate, or a salt or a hydrate thereof. The compounds possess a low toxicity, are safe antimicrobial agents for animals, have a broader antimicrobial spectrum, and are effective against various infectious diseases of animals.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: December 29, 1992
    Assignee: Daiichi Pharmaceutical Co., Ltd.
    Inventors: Toshihiro Takahata, Masakazu Takei, Masahiro Kato, Tadayoshi Miura, Toshiyuki Yoshioka
  • Patent number: RE41747
    Abstract: The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98 or higher.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: September 21, 2010
    Assignee: Kyocera Optec Co., Ltd.
    Inventors: Takahiro Okura, Kazuya Shimizu, Masakazu Takei