Patents by Inventor Akihiko Hiraiwa

Akihiko Hiraiwa 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: 5292364
    Abstract: An adhesive system comprising, as a primer, an organometallic compound and an organic polymer, which is useful in bonding non-polar or highly crystalline resin substrates together or bonding said resin substrates and another material, such as a solid material, a coating material, paint or printing ink by using a 2-cyanoacrylate adhesive.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: March 8, 1994
    Assignee: Toagosei Chemica Industry Co., Ltd.
    Inventors: Akihiko Hiraiwa, Kenji Ito, Kaoru Kimura
  • Patent number: 4980086
    Abstract: A curable composition, in which powder of an organic or inorganic compound is added to and dispersed in a 2-cyanoacrylate and an acidic substance and a basic substance are contained as the stabilizer.In the curable composition of the invention, powder of organic or inorganic compound can be stably dispersed into the composition by the combined use of the acidic substance and the basic substance, thereby providing desired properties with ease while giving excellent storage stability and maintaining the instantaneous curing property of the composition. The curable composition can generally be used as adhesives, coating agents, paints, potting agents, etc.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: December 25, 1990
    Assignee: Toagosei Chemical Industry, Co., Ltd.
    Inventors: Akihiko Hiraiwa, Kaoru Kimura, Mitsuyoshi Sato
  • Patent number: 4818325
    Abstract: A primer comprising an organometallic compound and an organic polymer, which is useful in bonding non-polar or highly crystalline resin substrates together or bonding said resin substrates and another material, such as a solid material, a coating material, paint or printing ink by using a 2-cyanoacrylate.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: April 4, 1989
    Assignee: Toagosei Chemical Industry Co., Ltd.
    Inventors: Akihiko Hiraiwa, Kenji Ito, Kaoru Kimura
  • Patent number: 4806380
    Abstract: Fingerprint developers are made of woven or non-woven fabric of hydrophobic synthetic fibers which is impregnated with a 2-cyanoacrylate. The synthetic resin for the fibers may be polyethylene, polypropylene and the like. This developer is placed in a closed vessel together with an article suspected of containing a latent fingerprint with or without a cup of hot water. Rapid development of fingerprints is possible.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: February 21, 1989
    Assignee: Toagosei Chemical Industry, Co.
    Inventors: Mitsuyoshi Sato, Akihiko Hiraiwa, Kaoru Kimura