Patents by Inventor Masahara Sugai

Masahara Sugai 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).

  • Dye-forming coupler, silver halide photographic light-sensitive material and azomethine dye compound
    Publication number: 20030073047
    Abstract: A dye-forming coupler of formula (I), a silver halide photographic light-sensitive material containing the coupler, and an azomethine dye that can be derived from the dye-forming coupler: 1
    Type: Application
    Filed: March 27, 2002
    Publication date: April 17, 2003
    Inventors: Kiyoshi Takeuchi, Shigeki Uehira, Mario Aoki, Jun Ogasawara, Yasuhiro Shimada, Seiji Ichijima, Yasuaki Deguchi, Naoto Matsuda, Akira Ikeda, Hisashi Mikoshiba, Masahara Sugai, Taiji Katsumata