Patents by Inventor Yumiko Takedomi

Yumiko Takedomi 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).

  • Secondary cell
    Patent number: 4906537
    Abstract: The invention provides a new secondary cell with a solid electrolyte layer wherein the solid electrolyte layer comprises a plasma-polymerized layer of an organic compound containing an alkali metal ion and an element with high electronegativity.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: March 6, 1990
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Hideo Hotomi, Yumiko Takedomi
  • Photosensitive member having an overcoat lyer and process for manufacturing the same
    Patent number: 4902595
    Abstract: A photosensitive member of the present invention comprising an electrically conductive substrate, a photosensitive layer comprising an organic material and a hydrogen-containing amorphous carbon overcoat layer containing halogen atoms and at least one or more elements selected from the group consisting of chalcogen and elements in Group III, IV and V of the periodic table.The overcoat layer contains hydrogen in an amount of about 5 to about 50 atomic % based on the combined amount of hydrogen atoms and carbon atoms.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: February 20, 1990
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kenji Masaki, Izumi Osawa, Yumiko Takedomi, Masanori Fujiwara
  • Photosensitive member having an amorphous carbon overcoat layer
    Patent number: 4891291
    Abstract: A photosensitive member of the present invention comprises an electrically conductive substrate, a photoconductive layer and an overcoat layer.The photoconductive layer comprises selenium-arsenic alloy layer, or selenium layer and selenium-tellurium layer formed in this order. The overcoat layer comprises amorphous carbon containing hydrogen and contains at least one or more elements selected from the group consisting of chalcogen and elements in Group III and IV of the periodic table.The photosensitive member of this construction is harmless and excellent in electrophotographic characteristics inclusive of durability and surface hardness.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: January 2, 1990
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kenji Masaki, Izumi Osawa, Masanori Fujiwara, Yumiko Takedomi
  • Photosensitive member having an overcoat layer and process for manufacturing the same
    Patent number: 4886724
    Abstract: A photosensitive member of the present invention comprises an electrically conductive substrate, a photosensitive layer comprising an organic material and a hydrogen-containing amorphous carbon overcoat layer containing one or more elements selected from the group consisting of chalcogen and elements in Group III, IV and V of the periodic table.The overcoat layer contains hydrogen in an amount of about 30 to about 60 atomic % based on the combined amount of hydrogen atoms and carbon atoms.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: December 12, 1989
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kenji Masaki, Izumi Osawa, Masanori Fujiwara, Isao Doi, Yumiko Takedomi