Patents by Inventor Nobuo Nojima

Nobuo Nojima 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).

  • Sand-blasting abrasive materials and method of producing the same
    Patent number: 4333743
    Abstract: Method of producing sand-blasting abrasive materials, and the materials so produced, consisting of silica sand and/or slag, coated with a thermosetting resin by heat treatment, and the coating being then rendered unsoluble and unmeltable, by subsequent, separate heat treatment. The resin may contain a catalyst.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: June 8, 1982
    Assignee: Nojimagumi Co., Ltd.
    Inventor: Nobuo Nojima