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:
Nov. 11, 2025
Filed:
Feb. 27, 2024
Applicant:
Agc Inc., Tokyo, JP;
Inventors:
Seigo Kotera, Chiyoda-ku, JP;
Wataru Kasai, Chiyoda-ku, JP;
Junetsu Nakamura, Chiyoda-ku, JP;
Takatoshi Yaoita, Chiyoda-ku, JP;
Assignee:
AGC Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/18 (2006.01); B29C 71/02 (2006.01); B29K 27/18 (2006.01); B29K 105/00 (2006.01); C08F 214/26 (2006.01); C08J 5/12 (2006.01); H05K 1/05 (2006.01); H05K 3/02 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B29C 71/02 (2013.01); C08F 214/265 (2013.01); C08J 5/121 (2013.01); H05K 1/056 (2013.01); H05K 3/022 (2013.01); B29C 2071/022 (2013.01); B29K 2027/18 (2013.01); B29K 2105/0085 (2013.01); C08F 2800/10 (2013.01); C08J 2327/18 (2013.01); H05K 2201/015 (2013.01);
Abstract
To provide a dielectric film which is excellent in dielectric properties and stability in the electric corrosion test and which is suitable for producing a high-precision printed board. A roll film comprising a melt-processable fluororesin as the main component and having a thickness of from 1 to 100 μm, the dimensional change rate of which is less than 1.0%, in terms of an absolute value, in each of MD and TD, when heated at 150° C. for 30 minutes and then cooled to 25° C., based on the dimension at 25° C.