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. 04, 2000
Filed:
Jun. 06, 1994
Applicant:
Inventors:
Carl R Mackerer, Pennington, NJ (US);
Timothy A Roy, Hopewell, NJ (US);
Gary R Blackburn, Washington Crossing, PA (US);
Assignee:
Mobil Oil Corporation, Fairrfax, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ; C07C / ;
U.S. Cl.
CPC ...
208 44 ; 208135 ; 585446 ; 585459 ; 585467 ; 585468 ;
Abstract
A process for reducing the mutagenicity of a coal-tar-based product containing polynuclear aromatic compounds. The process includes the step of contacting the coal-tar-based product in the presence of an alkylating agent with an acid catalyst under alkylation conditions sufficient to reduce the mutagenicity of the polynuclear aromatic containing coal-tar-based material to a level less than the initial mutagenicity index value. Also provided are non-carcinogenic coal-tar-derived products.