Patents by Inventor Akio Ishiwatari

Akio Ishiwatari 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).

  • Cross-linking compositions
    Patent number: 6610768
    Abstract: This application relates to compositions of cross-linking peroxides which have excellent storage stability, without exudation of peroxide taking place, which contain the organic peroxide in a high concentration, and which are easily blendable with a rubber to be cross-linked. The compositions are obtained by mixing a softening agent with a Brookfield viscosity of 10,000 poises or less at 60 ° C. with an organic peroxide, preferably in the presence of a filler, and optionally with further ingredients.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: August 26, 2003
    Assignees: Akzo Nobel N. V., Kayaku Akzo Corporation
    Inventors: Jernej Jelenic, Gerrit Frits Drost, Frans Johannes Van Moorsel, Akio Ishiwatari, Akihiko Tkai
  • Unsaturated alkyd-containing organic peroxide composition
    Patent number: 4977240
    Abstract: A peroxide curing agent composition containing 20-90% of an unsaturated alkyd diluent which is fluid at room temperature, is disclosed. The curing agent is useful for the curing of unsaturated polyesters and eliminates the problem of the bleeding of harmful phthalate diluents from such cured polyesters, while providing excellent stability of the diluted peroxide.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: December 11, 1990
    Assignee: Kayaku Akzo Corporation
    Inventor: Akio Ishiwatari