Patents by Inventor Masako Yokoyama

Masako Yokoyama 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: 8222348
    Abstract: An epoxy silicon, which comprises at least a compound represented by the following general formula (1), and a compound represented by the following general formula (2); and which is represented by an average composition formula (3), wherein a value of [g/(a+b+c+d+e+f+g+h+i+j)] falls within a range of 0.020 or less.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: July 17, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Yoshito Kuroda, Masako Yokoyama, Hiroji Oda
  • Publication number: 20100120975
    Abstract: An epoxy silicon, which comprises at least a compound represented by the following general formula (1), and a compound represented by the following general formula (2); and which is represented by an average composition formula (3), wherein a value of [g/(a+b+c+d+e+f+g+h+i+j)] falls within a range of 0.020 or less.
    Type: Application
    Filed: April 15, 2008
    Publication date: May 13, 2010
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Yoshito Kuroda, Masako Yokoyama, Hiroji Oda
  • Patent number: 7202326
    Abstract: A glycolic acid copolymer comprising (a) 80 to less than 95% by mole of glycolic acid monomer units, (b) 5.0 to 20.0% by mole of non-glycolic, hydroxycarboxylic acid monomer units, and (c) 0 to 0.10% by mole of diglycolic acid monomer units, the non-glycolic, hydroxycarboxylic acid monomer units (b) constituting a plurality of segments each independently consisting of at least one monomer unit (b), wherein the segments have an average chain length of from 1.00 to 1.50 in terms of the average number of monomer unit or units (b), the total of the components (a), (b) and (c) being 100% by mole, the glycolic acid copolymer having a weight average molecular weight of 50,000 or more.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: April 10, 2007
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Yoshito Kuroda, Harumi Watanabe, Masako Yokoyama
  • Publication number: 20050288479
    Abstract: A glycolic acid copolymer comprising (a) 80 to less than 95% by mole of glycolic acid monomer units, (b) 5.0 to 20.0% by mole of non-glycolic, hydroxycarboxylic acid monomer units, and (c) 0 to 0.10% by mole of diglycolic acid monomer units, the non-glycolic, hydroxycarboxylic acid monomer units (b) constituting a plurality of segments each independently consisting of at least one monomer unit (b), wherein the segments have an average chain length of from 1.00 to 1.50 in terms of the average number of monomer unit or units (b), the total of the components (a), (b) and (c) being 100% by mole, the glycolic acid copolymer having a weight average molecular weight of 50,000 or more.
    Type: Application
    Filed: September 24, 2003
    Publication date: December 29, 2005
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yoshito Kuroda, Harumi Watanabe, Masako Yokoyama
  • Patent number: 5315361
    Abstract: A printer with a sorter unit allows printed recording sheets to be sorted to a single tray selected from a plurality of trays by a recording sheet guide mechanism that pivots around a shaft. Thus, the printer can sort the printed sheets by page, by user, or discharge the printed sheets paginated or with the printed side facing upward. The sorter trays includes a first detection lever that is rotated by the weight of recording sheets and a second detection lever that rotates in association with the first detection lever. A lever detector is provided on the sorter guide to detect the movement of the second detection lever. The sorter or guide is also provided with a sheet detection lever to detect a jam in the sorter guide.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: May 24, 1994
    Assignee: Seiko Epson Corporation
    Inventors: Shigeru Sawada, Shinichi Kasai, Jun Tsujimoto, Masako Yokoyama
  • Patent number: 5141222
    Abstract: A printer with a sorter unit allows printed recording sheets to be sorted to a single tray selected from a plurality of trays by a recording sheet guide mechanism that pivots around a shaft. Thus, the printer can sort the printed sheets by page, by user, or discharge the printed sheets paginated or with the printed side facing upward. The recording sheet guide mechanism is constructed to pivot around the shaft so that only a single drive unit is employed to select a tray for sorting. Thus, the printer has a simple and small structure. The printer has a recording sheet discharge outlet with discharge rollers for discharging a recording sheet that has been printed by the electrophotographic process.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: August 25, 1992
    Assignee: Seiko Epson Corporation
    Inventors: Shigeru Sawada, Shinichi Kasai, Jun Tsujimoto, Masako Yokoyama