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:
Jul. 05, 1994
Filed:
Dec. 24, 1990
Applicant:
Inventors:
Assignee:
Hoya Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
252582 ; 528 85 ; 528377 ;
Abstract
This invention relates to a polythiol compound and an optical material therefrom. Having a rigid 1,4-dithian ring which increases the refractive index and Abbe's number, the polythiol compound used for the production of an optical material imparts the optical material with high heat resistance and excellent mechanical properties as well as excellent optical properties.
Ohkubo, Tsuyoshi. (1994). Polythiol compound, and optical material and product produced therefrom (U.S. Patent No. 5326501). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5326501
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile