Patents by Inventor Teruo Murayama

Teruo Murayama 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).

  • Method for reclamation of vulcanized rubber
    Patent number: 4469817
    Abstract: Reclamation of vulcanized rubber is effected by a method which comprises heating powdered vulcanized rubber to a temperature for desulfurization of the rubber and, on completion of the desulfurization, quickly cooling the desulfurized rubber to a temperature at which substantially no oxidation of desulfurized rubber proceeds. This method obviates otherwise indispensable incorporation of process oil or other similar additive to the powdered vulcanized rubber for the purpose of retarding the oxidation of rubber molecules. When the reclaimed rubber obtained by this method is blended with newly supplied rubber, the resultant vulcanized rubber shows sparing degradation of physical properties.
    Type: Grant
    Filed: November 18, 1982
    Date of Patent: September 4, 1984
    Assignees: Toyoda Gosei Co., Ltd., Micro Denshi Co., Ltd.
    Inventors: Keizo Hayashi, Atsushi Sumida, Teruo Murayama, Tomio Minobe