Patents by Inventor Takeshi Sahara

Takeshi Sahara 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 of tin flotation
    Patent number: 4113106
    Abstract: An improved tin flotation process is disclosed.Tin ores are subjected to flotation using sulfurous acid and/or sulfite in the flotation pulp to produce improved tin concentrates.
    Type: Grant
    Filed: September 16, 1975
    Date of Patent: September 12, 1978
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Shiro Obinata, Shigeru Hashimoto, Takeshi Sahara