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:
Apr. 30, 2002
Filed:
Apr. 02, 1998
Applicant:
Inventor:
Tadasu Kawashima, Tochigi, JP;
Assignee:
Sony Chemicals Corporation, Kanuma, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 1/504 ; B32B 2/732 ;
U.S. Cl.
CPC ...
B32B 1/504 ; B32B 2/732 ;
Abstract
It is an object of the present invention to provide a highly durable photochromic film retaining a photochromic activity for a long time even when used under high temperture and high humidity conditions. A durable photochromic film comprising a coloring material layer containing a photochromic material and a phototransmissive deposition film laminated to said coloring material layer is disclosed.
Kawashima, Tadasu. (2002). Photochromic film comprising a gas barrier deposition film (U.S. Patent No. 6379808). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6379808
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile