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:
Apr. 15, 1997
Filed:
Apr. 25, 1995
Takashi Kobayakawa, Tokuyama, JP;
Junji Momoda, Tokuyama, JP;
Tokuyama Corporation, Tokuyama, JP;
Abstract
A photochromic composition which can be polymerized and cured upon irradiation with active energy rays such as ultraviolet rays to exhibit favorable photochromic property. The photochromic composition comprises 100 parts by weight of a radical polymerizable monomer, 0.001 to 0.2 parts by weight of a photochromic compound, and 0.01 to 1 part by weight of a photo polymerization 1.0 initiator. A photochromic cured product is obtained by irradiating the photochromic composition with the light which contains ultraviolet rays.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile