Patents by Inventor Takuji Oyama

Takuji Oyama 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: 20030080671
    Abstract: A panel glass wherein a surface treating film is formed on a substrate glass so that overall transmittance distribution within an effective picture plane satisfies a specific mathematical expression, whereby, even with a flattened panel glass, a uniform-brightness image can be observed with a good contrast, and occurrence of a double image is suppressed; and a CRT.
    Type: Application
    Filed: September 16, 2002
    Publication date: May 1, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Noritoshi Horie, Tsunehiko Sugawara, Takuji Oyama
  • Publication number: 20030042838
    Abstract: A panel glass wherein a surface treating film is formed on a substrate glass so that overall transmittance distribution within an effective picture plane satisfies a specific mathematical expression, whereby, even with a flattened panel glass, a uniform-brightness image can be observed with a good contrast, and occurrence of a double image is suppressed; and a CRT.
    Type: Application
    Filed: July 30, 2002
    Publication date: March 6, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Noritoshi Horie, Tsunehiko Sugawara, Takuji Oyama
  • Publication number: 20030034733
    Abstract: A protective plate for a plasma display comprises conductive substrate for protecting a plasma display and an electrode in electrical contact with the conductive substrate.
    Type: Application
    Filed: July 3, 2002
    Publication date: February 20, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Nobuyoshi Sakurada, Toshihiro Ajikata, Kouichi Osada, Ken Moriwaki, Katsuaki Aikawa, Kazuyoshi Noda, Takuji Oyama
  • Patent number: 6509684
    Abstract: A CRT panel glass and a CRT wherein a surface treating film is formed on an outer surface of a CRT panel so that overall transmittance distribution and reflectance distribution within an effective picture plane satisfy specific mathematical expressions, whereby, even with a flattened panel glass, brightness and contrast are uniform over the entire surface of the image display plane, and their production method.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: January 21, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Noritoshi Horie, Tsunehiko Sugawara, Toshikazu Ikezawa, Takuji Oyama, Junnosuke Mizukami, Eiji Shidoji
  • Publication number: 20020153822
    Abstract: A CRT panel glass and a CRT wherein a surface treating film is formed on an outer surface of a CRT panel so that overall transmittance distribution and reflectance distribution within an effective picture plane satisfy specific mathematical expressions, whereby, even with a flattened panel glass, brightness and contrast are uniform over the entire surface of the image display plane, and their production method.
    Type: Application
    Filed: March 25, 2002
    Publication date: October 24, 2002
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Noritoshi Horie, Tsunehiko Sugawara, Toshikazu Ikezawa, Takuji Oyama, Junnosuke Mizukami, Eiji Shidoji
  • Patent number: 6468403
    Abstract: A method for producing a transparent conductive film composed mainly of an oxide by sputtering using a sputtering target capable of forming a transparent conductive film, wherein intermittent electric power is supplied to the target.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: October 22, 2002
    Assignee: Asahi Glass Company Ltd.
    Inventors: Junichi Shimizu, Shujiro Watanabe, Satoru Takaki, Hisashi Osaki, Takuji Oyama, Eiichi Ando
  • Patent number: 6452331
    Abstract: A protective plate for a plasma display includes conductive substrate for protecting a plasma display and an electrode in electrical contact with the conductive substrate.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: September 17, 2002
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Nobuyoshi Sakurada, Toshihiro Ajikata, Kouichi Osada, Ken Moriwaki, Katsuaki Aikawa, Kazuyoshi Noda, Takuji Oyama
  • Patent number: 6358617
    Abstract: A light absorptive antireflector provided with a titanium oxy-nitride film having a geometrical film thickness of from 5 to 25 nm, wherein O/Ti (atomic ratio)=0.11 to 0.33, and a film composed mainly of silica and having a geometrical film thickness of from 70 to 130 nm, and a process for its production.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: March 19, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Hisashi Ohsaki, Yuko Tachibana, Takuji Oyama, Hiromichi Nishimura, Yoshihito Katayama
  • Publication number: 20020027817
    Abstract: A sputtering target comprising a substrate and a target material formed on the substrate, wherein the target material comprises a metal oxide of the chemical formula MOx as the main component, wherein MOx is a metal oxide which is deficient in oxygen as compared with the stoichiometric composition, and M is at least one metal selected from the group consisting of Ti, Nb, Ta, Mo, W, Zr and Hf, a process for its production, and a method for forming a film having a high refractive index.
    Type: Application
    Filed: September 28, 2001
    Publication date: March 7, 2002
    Applicant: Asahi Glass Company Ltd.
    Inventors: Otojiro Kida, Akira Mitsui, Eri Suzuki, Hisashi Osaki, Atsushi Hayashi, Takuji Oyama, Kenichi Sasaki
  • Patent number: 6344288
    Abstract: A light absorptive antireflector comprising a substrate, and a first layer of a light absorptive film, a second layer made of a material which has slight absorption within a visible light region and a third layer made of a material which has a refractive index smaller than 1.55, sequentially formed on the substrate, which has an adequate low reflection performance within a wide range of a wavelength region and which has an electromagnetic shielding ability and a low luminous transmittance suitable for improving the contrast of a display, has freeness in transmittance and reflection color and is excellent also in the productivity, and a method for its production.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: February 5, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Takuji Oyama, Tomohiro Yamada
  • Patent number: 6334938
    Abstract: A sputtering target comprising a substrate and a target material formed on the substrate, wherein the target material comprises a metal oxide of the chemical formula MOx as the main component, wherein MOx is a metal oxide which is deficient in oxygen as compared with the stoichiometric composition, and M is at least one metal selected from the group consisting of Ti, Nb, Ta, Mo, W, Zr and Hf, a process for its production, and a method for forming a film having a high refractive index.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: January 1, 2002
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Otojiro Kida, Akira Mitsui, Eri Suzuki, Hisashi Osaki, Atsushi Hayashi, Takuji Oyama, Kenichi Sasaki
  • Publication number: 20010020586
    Abstract: A sputtering target comprising a substrate and a target material formed on the substrate, wherein the target material comprises a metal oxide of the chemical formula MOx as the main component, wherein MOx is a metal oxide which is deficient in oxygen as compared with the stoichiometric composition, and M is at least one metal selected from the group consisting of Ti, Nb, Ta, Mo, W Zr and Hf, a process for its production, and a method for forming a film having a high refractive index.
    Type: Application
    Filed: December 5, 2000
    Publication date: September 13, 2001
    Applicant: Asahi Glass Company, Ltd.
    Inventors: Otojiro Kida, Akira Mitsui, Eri Suzuki, Hisashi Osaki, Atsushi Hayashi, Takuji Oyama, Kenichi Sasaki
  • Patent number: 6110328
    Abstract: A sputtering method comprises applying a negative voltage intermittently in a constant periodic cycle to a cathode disposed in a vacuum chamber, wherein the negative voltage is intermittently applied so that a time during which the negative voltage is not applied includes a time during which the voltage is controlled to be zero volt in a range of from 10 .mu.s to 10 ms, and the zero voltage time is equal to or longer than the time required by one arcing from its generation to extinction.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: August 29, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Junichi Shimizu, Shujiro Watanabe, Satoru Takaki, Hisashi Osaki, Takuji Oyama, Eiichi Ando
  • Patent number: 5976684
    Abstract: An organic substrate provided with a light absorptive antireflection film, which contains an organic substrate, and a light absorbing film and a low refractive index film formed in this order on the substrate, to reduce reflection of incident light from the low refractive index film side, wherein the organic substrate has its surface plasma-treated, and a layer made essentially of at least one member selected from the group consisting of silicon, a silicon nitride, a silicon oxide and a silicon oxy-nitride, is formed between the plasma-treated substrate surface and the light absorbing film.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 2, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takuji Oyama, Hisashi Ohsaki, Tomohiro Yamada, Toshihiko Higuchi
  • Patent number: 5942319
    Abstract: A light absorptive antireflector comprising a substrate, a light absorbing film formed on the substrate and a silica film formed on the light absorbing film, to reduce reflection of incident light from the silica film side, wherein the geometrical film thickness of the light absorbing film is from 5 to 25 nm, and the geometrical film thickness of the silica film is from 70 to 110 nm.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: August 24, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takuji Oyama, Yoshihito Katayama
  • Patent number: 5772862
    Abstract: The present invention relates to a film comprising silicon dioxide as the main component, which contains Zr, etc., and a method for forming it by reactive DC sputtering. It makes it possible to form reflection preventive films, alkali barrier films and various multi-layered films such as multi-layered films for anti-iridescent glass, which contain said film comprising silicon dioxide as the main component, by a physical vapor deposition method without breaking a vacuum.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: June 30, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Eiichi Ando, Akira Mitsui, Junichi Ebisawa, Koichi Suzuki, Kiyoshi Matsumoto, Takuji Oyama
  • Patent number: 5691044
    Abstract: A light absorptive antireflector comprising a substrate, a light absorbing film formed on the substrate and a silica film formed on the light absorbing film, to reduce reflection of incident light from the silica film side, wherein the geometrical film thickness of the light absorbing film is from 5 to 25 nm, and the geometrical film thickness of the silica film is from 70 to 110 nm.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: November 25, 1997
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Takuji Oyama, Yoshihito Katayama
  • Patent number: 5660700
    Abstract: A sputtering method comprises applying a negative voltage intermittently in a constant periodic cycle to a cathode disposed in a vacuum chamber, wherein the negative voltage is intermittently applied so that a time during which the negative voltage is not applied includes a time during which the voltage is controlled to be zero volt in a range of from 10 .mu.s to 10 ms, and the zero voltage time is equal to or longer than the time required by one arcing from its generation to extinction.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: August 26, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Junichi Shimizu, Shujiro Watanabe, Satoru Takaki, Hisashi Osaki, Takuji Oyama, Eiichi Ando
  • Patent number: 5605609
    Abstract: The present invention relates to a film comprising silicon dioxide as the main component, which contains Zr, etc., and a method for forming it by reactive DC sputtering. It makes it possible to form reflection preventive films, alkali barrier films and various multi-layered films such as multi-layered films for anti-iridescent glass, which contain said film comprising silicon dioxide as the main component, by a physical vapor deposition method without breaking a vacuum.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: February 25, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Eiichi Ando, Akira Mitsui, Junichi Ebisawa, Koichi Suzuki, Kiyoshi Matsumoto, Takuji Oyama
  • Patent number: 5298312
    Abstract: A non-iridescent transparent product comprising a transparent substrate, a transparent film having a refractive index of at least 1.6 and a thickness of at least 0.15 .mu.m formed on the substrate, and an underlying layer formed at the boundary between the substrate and the film, wherein the underlying layer is an absorbing layer with an extinction coefficient k being not 0.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: March 29, 1994
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takuji Oyama, Yasuhiko Akao