Patents by Inventor Toshio Osada

Toshio Osada 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).

  • Tanning process and tanning compositions
    Patent number: 4348201
    Abstract: A tanning process comprising pickling a hide which has previously subjected to beamhouse works such as depilation if necessary, decalcification and beating, in the presence of urotropin and at least one tanning improver selected from chromium and aluminum salts as well as from phenolic compounds, organic compounds containing nitrogen and sulphur or halogen atoms, organic carboxylic acids, organotin compounds, copper compounds and arsenic compounds.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: September 7, 1982
    Assignee: Seitetsu Kagaku Co., Ltd.
    Inventors: Saburo Hayashi, Syohiti Okada, Kazuyoshi Okamoto, Mochifumi Mizutani, Teizo Isono, Toshio Osada, Tohru Okabe, Mitsuji Adachi