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:
Feb. 19, 1991
Filed:
Aug. 21, 1989
Koichi Sakakibara, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A lens for a vehicle lamp having a central bright portion and a surrounding portion of lesser brightness and which can be manufactured as a single unit. The lens surface is formed with arcuate step-like blocks circumferentially separated from one another and divided from one another by a plurality of concentric lines and radial lines. The blocks in a central portion of the lens have a refractive configuration, while the blocks disposed outside of the central portion have a linearly transmitting configuration. The two types of blocks are arranged continuously and unitarily in a concentric manner in a radial direction of the central portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile