Patents by Inventor Shigeru Koyanagi

Shigeru Koyanagi 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: 9475940
    Abstract: A polyarylene sulfide resin composition containing a polyarylene sulfide resin (A) and an olefin wax (B) having an acid value within the range of 65 to 150 [mgKOH/g], wherein the amount of the olefin wax (B) is 0.01 to 5 parts by mass of relative to 100 parts by mass of the polyarylene sulfide resin (A) and the olefin wax (B) contains a carboxyl group and a carboxylic anhydride group. A molded product prepared by molding the composition is also provided. The polyarylene sulfide resin composition has excellent mechanical properties and mold releasing properties and the molded product prepared from the polyarylene sulfide resin composition exhibits good adhesion to epoxy resins.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: October 25, 2016
    Assignee: DIC Corporation
    Inventor: Shigeru Koyanagi
  • Publication number: 20150080507
    Abstract: A polyarylene sulfide resin composition containing a polyarylene sulfide resin (A) and an olefin wax (B) having an acid value within the range of 65 to 150 [mgKOH/g], wherein the amount of the olefin wax (B) is 0.01 to 5 parts by mass of relative to 100 parts by mass of the polyarylene sulfide resin (A) and the olefin wax (B) contains a carboxyl group and a carboxylic anhydride group. A molded product prepared by molding the composition is also provided. The polyarylene sulfide resin composition has excellent mechanical properties and mold releasing properties and the molded product prepared from the polyarylene sulfide resin composition exhibits good adhesion to epoxy resins.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 19, 2015
    Inventor: Shigeru Koyanagi
  • Patent number: 4384342
    Abstract: A lookahead (guessahead) prefetching technique is used to reduce the average access time, for accessing memory modules when program addresses are modified into effective addresses for addressing the modules. A first memory address register stores the column address and module designation portions of the current effective address, a second memory address register stores the row address portion of the current effective address, and a third memory address register stores the module designation portion of the prior effective address. Since the same module is frequently accessed many times in succession, the average access time is reduced by starting an access based upon the contents of the second and third memory address registers without waiting until the column address and module designation portions of the current effective address are available for storage in the first memory address register.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: May 17, 1983
    Assignee: Panafacom Limited
    Inventors: Takao Imura, Shigeru Koyanagi, Yoshihiro Joda