Patents by Inventor Masatoshi Tomiki

Masatoshi Tomiki 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).

  • O-naphthoquinone diazide photosensitive coating composition containing a polyvinyl pyrrolidone compound and a stannic halide
    Patent number: 5318874
    Abstract: A composition for forming a photosensitive coating is disclosed which includes:(a) a photosensitive agent which is an o-naphthoquinone diazide compound,(b) a polyvinylpyrrolidone compound, and(c) a stannic halide, wherein the o-naphthoquinone diazide compound is present in an amount of 5-50 parts by weight per 100 parts by weight of the polyvinylpyrrolidone compound and the stannic halide is present in an amount of 4-40% based on the weight of the o-naphthoquinone diazide compound.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: June 7, 1994
    Assignee: Somar Corporation
    Inventors: Shinichi Yamamoto, Masatoshi Tomiki, Naohiko Kiryu, Akiko Yamazaki
  • Matted film containing a matting agent consisting of an organic filler and an inorganic filler
    Patent number: 5316843
    Abstract: A matted film is disclosed which includes a synthetic resin film, and a mat layer provided over at least one surface of the film and containing a matting agent which is a mixture of 50-95% by weight of an organic filler having an average particle size of 10 .mu.m or less and 5-50% by weight of an inorganic filler having an average particle size of 10 .mu.m and selected from sericite, calcined sericite, kaolin minerals, calcined kaolin minerals, pyrophyllite, calcined pyrophyllite and mixtures thereof.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: May 31, 1994
    Assignee: Somar Corporation
    Inventors: Naohiko Kiryu, Shinichi Yamamoto, Masatoshi Tomiki, Tatuhiko Higami
  • Composite film having slippery, electrically conducting surface
    Patent number: 5262219
    Abstract: A composite film is disclosed which includes (a) a synthetic resin substrate film having a roughened surface, and (b) a thin, slippery, electrically conducting layer coated over the roughened surface. The conducting layer contains 2-10% by weight of carbon black, 10-40% by weight of a fluorine resin, 25-78% by weight of a hardened binder resin selected from hardened amino resins, hardened phenol resins and mixtures thereof, and 7-25% by weight of a modifying resin selected from polyurethane resins, acrylic resins, polyester resins and mixtures thereof, the total amount of the hardened binder resin and the modifying resin being 50-85% by weight.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: November 16, 1993
    Assignee: Somar Corporation
    Inventors: Shinichi Yamamoto, Masatoshi Tomiki, Haruo Hatakeyama
  • Composite paper
    Patent number: 5053268
    Abstract: A composite paper suitable for use as writing paper, printing paper or copying paper is disclosed which includes a synthetic resin film having a thickness of 12-30 .mu.m, and a paper sheet laminated on each side of the synthetic resin film and having a Bekk smoothness of 60-120 seconds, a density of 0.8-1.0 g/cm.sup.3, a degree of sizing of 0.5-1.5 seconds and a thickness of 20-25 .mu.m.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: October 1, 1991
    Assignee: Somar Corporation
    Inventors: Ryohei Ehara, Masatoshi Tomiki