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:
Jan. 03, 1984
Filed:
Mar. 09, 1982
Applicant:
Inventors:
Yasumi Kamino, Osaka, JP;
Shigenori Onitsuka, Osaka, JP;
Takanobu Watanabe, Osaka, JP;
Katsuyuki Yano, Osaka, JP;
Assignee:
Hitachi Shipbuilding & Engineering Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10L / ;
U.S. Cl.
CPC ...
44 / ; 44 / ; 423461 ;
Abstract
Finely divided ash-containing coal is immersed in an aqueous solution of hydrochloric acid or citric acid, and acidic ammonium fluoride to cause the ash to react with the acid and the acidic ammonium fluoride, and the deashed coal is thereafter separated from the solution.
Kamino, Yasumi. (1984). Process and apparatus for chemically removing ash from coal (U.S. Patent No. 4424062). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4424062
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile