Patents by Inventor Humio Kunishige

Humio Kunishige 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 film laminated steel sheet for can by dry forming
    Patent number: 5950468
    Abstract: A steel sheet of which both sides are laminated with a resin film wherefrom a two-piece can having a can height about twice the length of the can diameter and a thin wall thickness from 40 to 70% of the original sheet thickness can be formed under a special wall thickness reduction process without water based coolant or lubricant.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: September 14, 1999
    Assignee: Toyo Kohan Co., Ltd
    Inventors: Keiichi Shimizu, Humio Kunishige, Junichi Tanabe, Atsuo Tanaka
  • Resin film laminated steel for can by dry forming
    Patent number: 5686194
    Abstract: A laminated steel sheet for dry forming drawn and ironed cans wherein the steel sheet comprises a steel containing iron, carbon, manganese, aluminum, silicon, phosphorus, sulfur and optionally titanium and/or niobium and wherein the steel sheet is electrolytically chromium-coated and covered on both sides with a 10-50 .mu.m thick thermoplastic resin layer. The sheet sheet has a crystal grain size of 8-30 .mu.m, a surface roughness of 0.05-0.6 .mu.m and a thickness of 0.15-0.3 mm.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: November 11, 1997
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Keiichi Shimizu, Humio Kunishige, Junichi Tanabe, Atsuo Tanaka