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:
May. 13, 1980
Filed:
Jan. 09, 1978
Hisashi Murakami, Tokyo, JP;
Toshikatsu Ohtsubo, Kamishirakawa, JP;
Kenji Fukuda, Yamashita, JP;
Noriaki Ohnishi, Ogawa, JP;
Mitsui Mining Co., Ltd., Tokyo, JP;
Mitsui Coke Co., Ltd., Tokyo, JP;
Abstract
A process is disclosed for the production of solvent-refined coal useful as a starting material for micromosaic carbonaceous products and having an O/C atomic ratio of 0.040 to <0.046, or useful as a starting material for coarse mosaic carbonaceous products and having an O/C atomic ratio of 0.030 to <0.040 or useful as a starting material for needle like carbonaceous products and having an O/C atomic ratio of less than 0.030. The process comprises dissolving in a hydrocarbon solvent a coal intrinsically having an O/C atomic ratio of 0.030 to <0.055 or a coal pretreated with a solvent, under hydrogen pressure, so as to have an O/C atomic ratio of 0.030 to <0.055, and heating the resultant coal solution under a pressure of hydrogen for a period of time sufficient to form said solvent-refined coal.