Patents by Inventor Toshitaka Sunahara

Toshitaka Sunahara 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).

  • Collapsible tube and method of manufacture
    Patent number: 4200051
    Abstract: A side seamless composite type collapsible tube having a tubular nipple section, a shoulder section and a tubular barrel section for receiving an extractable content is provided. The tube sections are formed of a continuous wall of metallic material having a wall thickness from about 20 to 70.mu. with at least a portion of the tubular barrel section coated with a synthetic resinous layer of from about 50 to 500.mu. thick. A method of forming the tube from a metallic blank material is also provided.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: April 29, 1980
    Assignees: Kyodo Insatsu Kabushiki Kaisha, Lion Hamigaki Kabushiki Kaisha
    Inventors: Yoshihiko Nakahara, Norihiro Tsujii, Kenichi Nakanishi, Katsuaki Terada, Yuji Sakai, Toshitaka Sunahara, Shinobu Ito