The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 1991
Filed:
Jun. 23, 1989
Hisashi Miyakawa, Mobara, JP;
Naoki Mizutani, Chiba, JP;
Kazuoki Urabe, Yachiyo, JP;
Kageo Yoshida, deceased, late of Tokyo, JP;
Osamu Nittani, Tokyo, JP;
Koji Hirano, Tokyo, JP;
Toyo Engineering Corporation, Chiba, JP;
Asahi Denka Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
There is disclosed a method for extraction of impurities from a powdery or particulate solid material charged into a extractor. According to the disclosure, not only can the extraction of impurities be carried out efficiently, but also the refinement of a solid material can be carried out, with the degree of the extraction of the impurities being very high.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile