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:
Jan. 20, 1976
Filed:
Mar. 27, 1974
Applicant:
Inventors:
Roy E Larson, St. Paul, MN (US);
Ralph H Forester, Jr, Minneapolis, MN (US);
Assignee:
North Star Research Institute, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156246 ; 156247 ; 156249 ; 264212 ; 264298 ; 428304 ;
Abstract
Unsupported ultrathin polymer film is made in bulk form by floating the film on a bath, transferring the floating film to a release substrate, drying the resulting film/substrate composite, separating the film from the substrate, and retrieving the unsupported film, e.g. in the form of a convoluted roll provided with anti-blocking agent in between the convolutions. The bulk product can be made into thermal insulating material, flake-like weather modifying agents, etc.