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. 05, 2013
Filed:
Feb. 16, 2011
Takehiro Nagasawa, Funabashi, JP;
Akira Watanabe, Sendai, JP;
Tokuji Miyashita, Sendai, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Tohoku University, Sendai-shi, JP;
Abstract
There is provided a polygermane compound forming a film having a high refractive index and thermal stability, and containing a sulfur atom-containing organic group as a group bonded to a germanium atom. A polygermane compound comprising a sulfur atom-containing organic group as a group bonded to a germanium atom, in which the sulfur atom-containing organic group is a group of Formula [1]:-L-Z  [1]where L is a single bond, a Calkylene group, or a Carylene group optionally substituted with a Calkyl group; and Z is a Csulfide group, a Ccyclic sulfide group optionally substituted with a Calkyl group, a Calkyl group containing a sulfide bond, or a Caralkyl group containing a sulfide bond, with a proviso that when L is a single bond, Z is not a Csulfide group.