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:
Sep. 22, 2020
Filed:
May. 17, 2017
Sumitomo Chemical Company, Limited, Tokyo, JP;
Toshiyuki Ueno, Tsukuba, JP;
Yasuhiro Yamashita, Tsukuba, JP;
Mitsunori Nodono, Tsukuba, JP;
Satoshi Okamoto, Osaka, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
This invention provides a gas barrier film, which can suppress blocking and winding deviation, and an optical film using the gas barrier film. The gas barrier film includes a flexible substrate and an inorganic thin film layer formed on at least one surface of the flexible substrate. A static friction coefficient between one surface of the gas barrier film and the other surface is not less than 0.85 and not more than 2.0, and when a 50 mm-square portion cut from the gas barrier film is placed on a horizontal surface such that a central portion of the 50 mm-square portion is in contact with the horizontal surface, an average value of distances from the horizontal surface to four corners of the 50 mm-square portion is not more than 2 mm.