Patents by Inventor Kastumi Nagai

Kastumi Nagai 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 forming can bodies
    Patent number: 4303032
    Abstract: In a can body forming process and equipment therefor, the cooling action to be added to the joining portions at the opposite ends of a can body blank is effected only at the lower part of the can forming cylinder so that said joining portions can be joined substantially without undergoing internal strain and with a higher forming accuracy.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: December 1, 1981
    Assignee: Hokkai Can Co., Ltd.
    Inventors: Yuzo Takahashi, Yoshinari Maeda, Yasuyuki Tanaka, Kastumi Nagai, Shiro Oyama
  • Equipment for forming can bodies
    Patent number: 4226201
    Abstract: In a can body forming process and equipment therefor, the cooling action to be added to the joining portions at the opposite ends of a can body blank is effected only at the lower part of the can forming cylinder so that said joining portions can be joined substantially without undergoing internal strain and with a higher forming accuracy.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: October 7, 1980
    Assignee: Hokkai Can Co., Ltd.
    Inventors: Yuzo Takahashi, Yoshinari Maeda, Yasuyuki Tanaka, Kastumi Nagai, Shiro Oyama