Patents by Inventor Shigeaki Kouketsu

Shigeaki Kouketsu 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: 4777189
    Abstract: Flame-retardant polyurethane foam having a very good skin weldability and a very low level of skin staining is produced from a polyhydroxy compound, organic polyisocyanate, blowing agent, catalyst, foam stabilizer, and flame retardant, and other additives, wherein the flame retardant contains a triaryl phosphate ester and the polyhydroxy compound is a mixture composed of 100 parts by weight of high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and 0.5 to 10 parts by weight of low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in one molecule.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: October 11, 1988
    Assignees: Ikeda Bussan Co., Ltd., Bridgestone Corporation
    Inventors: Kenji Shimomura, Shigeaki Kouketsu, Toru Okuyama, Take Sato
  • Patent number: 4696952
    Abstract: Flame-retardant polyurethane foam having a very good skin weldability and a very low level of skin staining is produced from a polyhydroxy compound, organic polyisocyanate, blowing agent, catalyst, foam stabilizer, and flame retardant, and other additives, wherein the flame retardant contains a triaryl phosphate ester and the polyhydroxy compound is a mixture composed of 100 parts by weight of high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and 0.5 to 10 parts by weight of low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in one molecule.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: September 29, 1987
    Assignees: Ikeda Bussan Co., Ltd., Bridgestone Corp.
    Inventors: Kenji Shimomura, Shigeaki Kouketsu, Toru Okuyama, Take Sato