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:
Jun. 24, 1997
Filed:
Dec. 14, 1995
Applicant:
Inventors:
Walter Francis Johnston, Akron, OH (US);
Donald Edward Richeson, North Canton, OH (US);
William George Perkins, Akron, OH (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
428 357 ; 428 3692 ; 521 81 ; 521 94 ; 521138 ; 525165 ; 525166 ;
Abstract
This invention is a composition, a kit to prepare the composition, cellular sheet made from the composition and thermoformed articles made from the sheet, in which the composition comprises polyethylene terephthalate, sufficient inert gas to give a sheet density of 0.4 to 1.25 gm/cc, a polytetrafluoroethylene nucleating agent and optionally a polyolefin additive and a heat stabilizer.
Johnston, Walter. (1997). Cellularized polyesters (U.S. Patent No. 5641549). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5641549
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile