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:
Jun. 10, 1997
Filed:
Dec. 17, 1991
Applicant:
Inventors:
Manabu Takami, Machida, JP;
Noboru Akazawa, Sagamihara, JP;
Atsunori Matsuda, Tsukuba, JP;
Yoshihiro Matsuno, Tsukuba, JP;
Shinya Katayama, Tsukuba, JP;
Toshio Tsuno, Tsukuba, JP;
Assignee:
Nippon Sheet Glass Co., Ltd., Doshomachi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
385124 ;
Abstract
The optical parts according to the invention have a feature of having smoothly coated surfaces for incident and emergent lights covered thereover with a light transmitting solid coating layer, and can be manufactured by a simplified process at least without needing polishing, together with the advantages of being weatherproof in atmosphere of high temperature and high humidity and antiozonant.