Patents by Inventor Mitsumasa Seko

Mitsumasa Seko 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).

  • Resin molded articles and method of manufacturing the same
    Publication number: 20050285294
    Abstract: In a method of manufacturing a resin molded article, resin including a foaming agent is injected into a cavity defined in a mold assembly. Then, a movable mold of the mold assembly is moved to partly expand the cavity so that the foaming is promoted at the part where the cavity is expanded. Therefore, a high foamed portion having voids therein and a low foamed portion having an expansion ratio less than that of the high foamed portion are integrally formed in the resin molded article.
    Type: Application
    Filed: May 16, 2005
    Publication date: December 29, 2005
    Applicant: DENSO Corporation
    Inventors: Yuji Ozaka, Mitsumasa Seko, Tsutomu Onoue, Manabu Ishiguro
  • Resin molded articles and method of manufacturing the same
    Patent number: 6926940
    Abstract: In a method of manufacturing a resin molded article, resin including a foaming agent is injected into a cavity defined in a mold assembly. Then, a movable mold of the mold assembly is moved to partly expand the cavity so that the foaming is promoted at the part where the cavity is expanded. Therefore, a high foamed portion having voids therein and a low foamed portion having an expansion ratio less than that of the high foamed portion are integrally formed in the resin molded article.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: August 9, 2005
    Assignee: Denso Corporation
    Inventors: Yuji Ozaka, Mitsumasa Seko, Tsutomu Onoue, Manabu Ishiguro
  • Resin molded articles and method of manufacturing the same
    Publication number: 20030215586
    Abstract: In a method of manufacturing a resin molded article, resin including a foaming agent is injected into a cavity defined in a mold assembly. Then, a movable mold of the mold assembly is moved to partly expand the cavity so that the foaming is promoted at the part where the cavity is expanded. Therefore, a high foamed portion having voids therein and a low foamed portion having an expansion ratio less than that of the high foamed portion are integrally formed in the resin molded article.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 20, 2003
    Inventors: Yuji Ozaka, Mitsumasa Seko, Tsutomu Onoue, Manabu Ishiguro