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:
Dec. 22, 1992
Filed:
Aug. 19, 1991
Applicant:
Inventors:
Brian B Adams, Sarnia, CA;
John A Thompson, Lady Smith, CA;
Assignee:
Exxon Research and Engineering Company, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10C / ;
U.S. Cl.
CPC ...
208 39 ; 208 22 ; 208 44 ; 1062731 ;
Abstract
Hard asphalts exhibiting acceptable penetration and low temperature properties can be produced from vacuum residua from which such hard asphalts are not normally obtainable via typical vacuum distillate such as that derived from Arab Light crude and/or feeds substantially comprising Arab Light-type crudes by ultrafiltering the residua through a membrane.
Adams, Brian. (1992). Production of hard asphalts by ultrafiltration of vacuum residua (U.S. Patent No. 5173172). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5173172
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile