Patents by Inventor Daizaburo Imai

Daizaburo Imai 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).

  • Process for producing amorphous olefin interpolymer
    Patent number: 3953410
    Abstract: A substantially amorphous ethylene-.alpha.-olefin-diolefin rubbery interpolymer is obtained by interpolymerizing ethylene, an .alpha.-olefin, and as a third component a specified diolefin having a norbornene ring with a catalyst system comprising a specified combination of an ether or ester compound, an organoaluminum compound, and a transition metal compound. The resulting rubbery interpolymer has an excellent extrudability and gives a cured product having favorable physical properties.
    Type: Grant
    Filed: April 12, 1974
    Date of Patent: April 27, 1976
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Daizaburo Imai, Keisaku Yamamoto