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:
Aug. 31, 1976
Filed:
May. 14, 1975
Applicant:
Inventors:
Richard Ghrist Parker, Hudson, OH (US);
Philip Carlos Kelley, Brecksville, OH (US);
Assignee:
The B. F. Goodrich Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
2608 / ; 260 / ; 260 / ; 526312 ;
Abstract
Polyurethanes exposed to degradative atmospheric conditions, particularly ultraviolet light, have improved resistance to such degradation when the polyurethanes contain small amounts of polymeric hydrazide, a phenolic stabilizer and an ultraviolet absorber in combination.
Parker, Richard. (1976). Color stabilized polyurethanes (U.S. Patent No. 3978156). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3978156
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile