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. 13, 1981
Filed:
Jun. 18, 1979
Applicant:
Inventor:
Richard O Whitehead, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525 99 ; 525 98 ;
Abstract
Vinyl aromatic compositions having improved impact and toughness are disclosed comprising interpolymers containing a mixture of a polybutadiene rubber with a specific styrene-butadiene two-block copolymer and a poly(monovinylaromatic) compound.
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Whitehead, Richard. (1981). Impact polymers (U.S. Patent No. 4294937). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4294937
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