Patents by Inventor Masayuki Koike

Masayuki Koike 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).

  • Patent number: 6794341
    Abstract: The peak-torque descending composition of the present invention contains a certain amount of an extreme pressure agent comprising at least neutral phosphate esters and/or neutral phosphite esters in a solvent comprising hydrocarbons and/or ethers. Further, a certain corrosion inhibitor may be contained. The part having a sliding portion of the present invention is surface-treated with the above composition. The process for producing a component or precision machine having a sliding portion, including immersing a part having a sliding portion in the above composition to adhere or absorb the composition onto the surface of the part. The press fit method of the present invention includes preliminarily immersing the metal plate or the metal shaft in the peak-torque descending composition to adhere or absorb the composition onto an inner surface of a hole.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: September 21, 2004
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Yuji Akao, Masayuki Koike
  • Publication number: 20030109387
    Abstract: The peak-torque descending composition of the present invention contains a certain amount of an extreme pressure agent comprising at least neutral phosphate esters and/or neutral phosphite esters in a solvent comprising hydrocarbons and/or ethers. Further, a certain corrosion inhibitor maybe contained. The part having a sliding portion of the present invention is surface-treated with the above composition. The process for producing a component or precision machine having a sliding portion comprises immersing a part having a sliding portion in the above composition to adhere or absorb the composition onto the surface of the part, then immediately, taking out the part from the composition, followed by drying, and subsequently assembling a component or precision machine using the part.
    Type: Application
    Filed: December 27, 2002
    Publication date: June 12, 2003
    Inventors: Yuji Akao, Masayuki Koike
  • Patent number: 6024338
    Abstract: A vibration insulating pad through which a center member is elastically connected to a vehicle body in an automotive vehicle. The vibration insulating pad is formed of rubber and to be disposed in an installation hole formed in the center member. The vibration insulating pad comprises a head section and a body section which are coaxially integral with each other through a neck section. A generally annular groove is formed between the head and body sections and around the neck section. An axially extending central through-hole is formed throughout the head, neck and body sections. Additionally, an axially extending slit is continuously formed extending from the inner to outer surfaces of the pad. The slit is located generally tangential with respect to the through-hole thereby facilitating deforming the pad long and narrow by hands of an operator prior to the installation operation for the pad.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: February 15, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masayuki Koike, Keiko Furukawa
  • Patent number: 5871199
    Abstract: A vibration insulating pad through which a center member is elastically connected to a vehicle body in an automotive vehicle. The vibration insulating pad is formed of rubber and to be disposed in an installation hole formed in the center member. The vibration insulating pad comprises a head section and a body section which are coaxially integral with each other through a neck section. A generally annular groove is formed between the head and body sections and around the neck section. An axially extending central through-hole is formed throughout the head, neck and body sections. Additionally, an axially extending slit is continuously formed extending from the inner to outer surfaces of the pad. The slit is located generally tangential with respect to the through-hole thereby facilitating deforming the pad long and narrow by hands of an operator prior to the installation operation for the pad.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: February 16, 1999
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Masayuki Koike, Keiko Furukawa