Patents by Inventor Toshishige Fujii

Toshishige Fujii 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).

  • Write-once-read-many optical recording media and process for recording and reproducing information on the media
    Publication number: 20060003136
    Abstract: For recording information at high density even at blue-laser wavelengths a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.
    Type: Application
    Filed: June 23, 2005
    Publication date: January 5, 2006
    Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki
  • Write-once-read-many optical recording media and process for recording and reproducing information on the media
    Patent number: 6933032
    Abstract: For recording information at high density even at blue-laser wavelengths, a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: August 23, 2005
    Assignee: Ricoh Company, Ltd.
    Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki
  • Write-once-read-many optical recording media and process for recording and reproducing information on the media
    Publication number: 20040265532
    Abstract: For recording information at high density even at blue-laser wavelengths, a write-once-read-many optical recording medium includes a first inorganic thin film and at least one of a second inorganic thin film and an organic thin film, in which the first inorganic thin film contains at least “R” and “O,” wherein “R” is at least one selected from Y, Bi, In, Mo, V and lanthanum series elements; and “O” is oxygen atom, and the second inorganic thin film and the organic thin film are capable of suppressing at least one of deformation and breakage of the first inorganic thin film and receiving the change of state of the first inorganic thin film.
    Type: Application
    Filed: April 14, 2004
    Publication date: December 30, 2004
    Inventors: Noboru Sasa, Yoshitaka Hayashi, Hirotaka Komoda, Atsuyuki Watada, Kawori Tanaka, Toshishige Fujii, Hisamitsu Kamezaki
  • Negative electrode for lithium secondary battery and lithium secondary battery using the negative electrode
    Patent number: 5900336
    Abstract: A negative electrode for a lithium secondary battery includes at least two kinds of carbon materials with a spacing of lattice plane (d.sub.002) of 3.4 .ANG. or less in the direction of the C axis thereof. A lithium secondary battery using this negative electrode is provided.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: May 4, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Yoshiko Kurosawa, Toshiyuki Ohsawa, Nobuo Katagiri, Okitoshi Kimura, Toshishige Fujii, Yoshitaka Hayashi, Hiroyuki Iechi, Yumiko Suzuki, Tomohiro Inoue
  • Non-aqueous secondary lithium battery
    Patent number: 5885733
    Abstract: A non-aqueous secondary lithium battery includes a positive electrode; a negative electrode which including at least one component selected from the group consisting of lithium, a lithium alloy, and a host compound which forms an intercalation compound or complex in combination with lithium; and an electrolytic solution or solid electrolyte containing a silicone compound.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: March 23, 1999
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Ohsawa, Toshiyuki Kabata, Yoshiko Kurosawa, Okitoshi Kimura, Toshishige Fujii, Nobuo Katagiri, Yoshitaka Hayashi
  • Positive electrode and secondary battery using the same
    Patent number: 5437943
    Abstract: A positive electrode is composed of a film-shaped active material, which is composed of a conducting polymer serving as a first active material, and an electrochemical active material serving as a second active material which is uniformly dispersed in the shape of particles in the conducting polymer, with the parts-by-weight ratio of the second active material to the first active material being 3 to 9 parts of the second active material to 7 to 1 part of the first active material, when the total of the first active material and the second active material is 10 parts. A secondary battery is fabricated using the above positive electrode.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: August 1, 1995
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshishige Fujii, Okitoshi Kimura, Toshiyuki Ohsawa, Toshiyuki Kabata, Nobuo Katagiri