Patents by Inventor Nobuichi Arai

Nobuichi Arai 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).

  • Lubricant composition for hot plastic working
    Patent number: 5346634
    Abstract: A lubricant composition useful for hot plastic working of metal material comprises 100 parts by weight of graphite particles and 2 to 100 parts by weight of particles of at least one metal oxide selected from oxides of Sn, Pb, Zn, Ca, Cu and Al and having an average size of 0.01 to 20.0 .mu.m.
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: September 13, 1994
    Assignee: Nihon Parkerizing Co., Ltd.
    Inventors: Yoshihiko Sawazaki, Yasuo Okumura, Nobuichi Arai
  • Steel sheet, and a production process therefor, for use in the manufacture of an end for an easy-to-open can: and an end for an easy-to-open can
    Patent number: 4584035
    Abstract: The present invention relates to a steel sheet for use in the manufacture of an end for a so-called easy-to-open can, a score being formed on the end.An object of the present invention is to provide an improved steel sheet which can be used as such end instead of conventional aluminum and which can impart an easy-to-open property thereto. A steel sheet according to the present invention consists essentially of from 0.06% to 0.25% of C, and the balance being essentially Fe and unavoidable impurities, and the cementite particles formed in the steel sheet have an average diameter of from 0.05 .mu.m to 0.5 .mu.m. Since the cementite is fine, the can-opening force can be decreased and the formability of the can end is excellent even at a high strength of the steel sheet.The present invention also provides an end made of the above-mentioned steel sheet and a process comprising the steps of hot-rolling the steel at an austenite temperature range, cooling a formed steel strip at a cooling rate of 30.degree. C.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: April 22, 1986
    Assignee: Nippon Steel Corporation
    Inventors: Nobuichi Arai, Hidejiro Asano
  • Steel sheet for DrD cans and DI cans
    Patent number: 4160056
    Abstract: A steel sheet for production of DrD or DI cans, comprising a cold rolled steel sheet, a solvent type thermosetting paint coating containing ethylene-vinyl acetate copolymer baked on the steel sheet in a completely cured state.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: July 3, 1979
    Assignee: Nippon Steel Corporation
    Inventors: Tadashi Tanaka, Tatsuro Obi, Nobuichi Arai, Teruo Koyama