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. 20, 1990
Filed:
Oct. 10, 1989
Applicant:
Inventors:
Irwin C Lewis, Strongsville, OH (US);
Terrence A Pirro, Cleveland, OH (US);
Assignee:
Union Carbide Corporation, Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10C / ;
U.S. Cl.
CPC ...
208-4 ; 208-6 ; 208 39 ;
Abstract
A plasticizer for use in the manufacture of pitch which forms a fluid at room temperature consisting essentially of a tar composed of low molecular weight and polymerized aromatic hydrocarbons having a molecular weight distribution characteristic which is bimodel. The plasticizer is formed by reacting a tar or distillate precursor with oxygen under controlled conditions of temperature and time.