Patents by Inventor Julian R. Koe

Julian R. Koe 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).

  • Optically active polythiophenes
    Patent number: 6878801
    Abstract: Novel polythiophenes which exhibit strong main chain absorption in the ultraviolet to visible region, show optical activity depending on the polymeric chain alone, and comprise as repeating units thiophene rings containing chiral substituent groups, and are represented by the following general formula: (wherein R1 and R2 are the same or different, each representing a hydrogen atom or an organic group, of which at least one is an enantiopure alkyl group with a branch structure at the ?-position, and n represents the number of repeating units selected from 10 to 100,000).
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: April 12, 2005
    Assignees: Japan Science and Technology, Nippon Telegraph and Telephone Corporation
    Inventors: Michiya Fujiki, Hiroshi Nakashima, Julian R. Koe, Masao Morita, Hiromi Tamoto
  • Optically active polythiophenes
    Publication number: 20030135021
    Abstract: Novel polythiophenes which exhibit strong main chain absorption in the ultraviolet to visible region, show optical activity depending on the polymeric chain alone, and comprise as repeating units thiophene rings containing chiral substituent groups, and are represented by the following general formula: 1
    Type: Application
    Filed: January 8, 2003
    Publication date: July 17, 2003
    Inventors: Michiya Fujiki, Hiroshi Nakashima, Julian R. Koe, Masao Morita, Hiromi Tamoto
  • Glass composite material, precursor thereof, nitrogen-containing composite material and optical device
    Patent number: 5858541
    Abstract: A glass composite material comprising a polymer chain selected from the group consisting of polysilane, polygermane, polystannane and a copolymer thereof, and a network structure of a metal oxide consisting of a metal atom bonded to the other metal atom through an oxygen atom, wherein the polymer chain is chemically crosslinked with a glass matrix of the network structure of the metal oxide directly or indirectly, and a volume resistivity measured by setting a ratio of a voltage to a film thickness at 10.sup.6 V/cm according to a disc plate electrode method is not more than 3.times.10.sup.6 .OMEGA.cm.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: January 12, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiro Hiraoka, Yutaka Majima, Kenji Todori, Julian R. Koe, Yoshihiko Nakano, Shinji Murai, Shuzi Hayase
  • Glass composite material, precursor thereof, nitrogen-containing composite material and optical device
    Patent number: 5717051
    Abstract: A glass composite material comprising a polymer chain selected from the group consisting of polysilane, polygermane, polystannane and a copolymer thereof, and a network structure of a metal oxide consisting of a metal atom bonded to the other metal atom through an oxygen atom, wherein the polymer chain is chemically crosslinked with a glass matrix of the network structure of the metal oxide directly or indirectly, and a volume resistivity measured by setting a ratio of a voltage to a film thickness at 10.sup.6 V/cm according to a disc plate electrode method is not more than 3.times.10.sup.6 .OMEGA.cm.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: February 10, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiro Hiraoka, Yutaka Majima, Kenji Todori, Julian R. Koe, Yoshihiko Nakano, Shinji Murai, Shuzi Hayase