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. 03, 2026
Filed:
Jul. 29, 2021
Jnc Corporation, Tokyo, JP;
Nobuo Enoki, Chiba, JP;
Kazuya Suwa, Chiba, JP;
Ayaka Kiya, Chiba, JP;
Mikio Yamahiro, Chiba, JP;
Takeshi Matsushita, Chiba, JP;
Taro Ishikawa, Chiba, JP;
Hisao Oikawa, Chiba, JP;
JNC CORPORATION, Tokyo, JP;
Abstract
A siloxane polymer contains a silsesquioxane unit and a linear siloxane unit in its main chain and has a cage-type silsesquioxane structure in its side chain. A highly transparent and flexible film having a small linear thermal expansion coefficient is produced by utilizing the cohesion force (physical crosslinking) of the cage-type silsesquioxane in the side chain. The siloxane polymer has repeating units respectively represented by formulae (1) and (4), and has terminal groups respectively represented by formulae (5L) and (5R) at its right and left terminals, wherein A represents a structure shown below.