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:
Oct. 01, 1985
Filed:
Jul. 23, 1984
Applicant:
Inventor:
Thomas R Miller, Waynesburg, PA (US);
Assignee:
Concoco Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21F / ;
U.S. Cl.
CPC ...
299 12 ; 166276 ; 166278 ;
Abstract
A coal seam is degasified in advance of its being mined by drilling one or more generally horizontal holes from a working face into the seam, and placing a particulate propping agent into the borehole to maintain its integrity.