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:
Mar. 10, 1992
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Walter J Schrenk, Midland, MI (US);
Ranganath K Shastri, Midland, MI (US);
Ralph F Ayres, Midland, MI (US);
Daniel J Gosen, Saginaw, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264171 ; 264 407 ; 264173 ; 366340 ; 4251311 ; 4251335 ; 425462 ;
Abstract
Method and apparatus are disclosed for making multilayer film having a prescribed gradient in, or distribution of, the thicknesses of one or more materials through the thickness of the film.
Quick Actions:
Schrenk, Walter. (1992). Interfacial surface generator (U.S. Patent No. 5094788). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5094788
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