Patents by Inventor Hiroyoshi Ozawa

Hiroyoshi Ozawa 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: 5534591
    Abstract: Adhesive compositions based on chlorinated polyolefins having chlorine contents greater than about 60 percent and molecular weights greater than about 500. The adhesive compositions contain the chlorinated polyolefin and a crosslinking agent. The chlorinated polyolefins are advantageous in that they can be prepared in an environmentally acceptable manner and can be utilized as a substitute for the traditional chlorinated natural rubber materials utilized in adhesive compositions without compromising adhesive performance. Preferred chlorinated polyolefins are prepared by a process involving the dispersion and chlorination of high surface area polyolefinic particles in an aqueous medium.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: July 9, 1996
    Assignee: Lord Corporation
    Inventors: Hiroyoshi Ozawa, Noboru Kamiya, Ryuji Futaya
  • Patent number: 5492963
    Abstract: Adhesive compositions based on chlorinated polyolefins having chlorine contents greater than about 60 percent and molecular weights greater than about 500. The adhesive compositions contain the chlorinated polyolefin and a crosslinking agent. The chlorinated polyolefins are advantageous in that they can be prepared in an environmentally acceptable manner and can be utilized as a substitute for the traditional chlorinated natural rubber materials utilized in adhesive compositions without compromising adhesive performance. Preferred chlorinated polyolefins are prepared by a process involving the dispersion and chlorination of high surface area polyolefinic particles in an aqueous medium.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: February 20, 1996
    Assignee: Lord Corporation
    Inventors: Hiroyoshi Ozawa, Noboru Kamiya, Ryuji Futaya
  • Patent number: 5385979
    Abstract: Adhesive compositions based on chlorinated polyolefins having chlorine contents greater than about 60 percent and molecular weights greater than about 500. The adhesive compositions contain the chlorinated polyolefin and a phenolic resin. The chlorinated polyolefins are advantageous in that they can be prepared in an environmentally acceptable manner and can be utilized as a substitute for the traditional chlorinated natural rubber materials utilized in adhesive compositions without compromising adhesive performance. Preferred chlorinated polyolefins are prepared by a process involving the dispersion and chlorination of high surface area polyolefinic particles in an aqueous medium.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: January 31, 1995
    Assignee: Lord Corporation
    Inventors: Hiroyoshi Ozawa, Noboru Kamiya, Ryuji Futaya
  • Patent number: 5030515
    Abstract: A method for bonding a rubber substrate to a metal substrate wherein a primer composition is first applied to the surface of said metal substrate and the rubber substrate is then bonded to the primer composition-containing metal substrate surface using a rubber-to-metal bonding adhesive, the improvement comprising employing as the primer composition a mixture comprising an epoxidized diene polymer having a molecular weight of about 500 to 30,000 and a resole type phenolic resin, in a weight ratio of about 2 to 100 parts of said diene polymer per 100 parts of said resole type phenolic resin.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: July 9, 1991
    Assignee: Lord Corporation
    Inventors: Hiroyoshi Ozawa, Masazumi Izawa, Akihiko Kasuya