Patents by Inventor Saeko Kawaragi

Saeko Kawaragi 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).

  • Polycarbonate resin coextruded article
    Patent number: 6333114
    Abstract: A polyycarbonate resin coextruded article having a thermoplastic aromatic polycarbonate resin core layer and a thermoplastic aromatic polycarbonate resin cover layer which is provided on at least one side of the core layer, wherein the cover layer contains 0.1 to 25 parts by weight of a triazine light stabilizer represented by formula (I) per 100 parts by weight of the thermoplastic aromatic polycarbonate. wherein R1 represents an alkyl group having 1 to 17 carbon atoms; R2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and n represents an integer of 1 to 20.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: December 25, 2001
    Assignee: Asahi Denka Kogyo Kabushiki Kaisha
    Inventors: Etsuo Tobita, Shin-ichi Ishikawa, Takashi Ayabe, Saeko Kawaragi