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:
Nov. 01, 1983
Filed:
Sep. 04, 1981
David W Taylor, Edgemont, PA (US);
Ergon, Inc., Jackson, MS (US);
Abstract
A process and apparatus for treating coal to produce micron-size coal particles having high surface reactivity and a low level of ash-forming impurities. The process involves grinding the coal in a substantially air tight fluid energy attrition mill under controlled temperature conditions to form a coal fraction comprising a major portion of hydrophobic coal particles and a minor portion of hydrophilic coal particles and an impurities-fraction comprising hydrophilic impurities particles, and separating the hydrophobic coal particles from the hydrophilic particles by virtue of the particles' relative affinity for water. The relative amount of hydrophilic coal particles may be reduced by the addition of a petroleum fraction to the coal during grinding.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile