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:
Dec. 28, 1993
Filed:
Sep. 14, 1992
Applicant:
Inventors:
Keith A Horn, Morris, NJ (US);
Christine L Lau, New Haven, CT (US);
Assignee:
AlliedSignal Inc., Morris Township, Morris County, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430270 ; 430290 ; 385141 ; 385129 ; 385130 ; 385132 ; 5253272 ; 5262922 ; 526298 ; 526245 ; 526311 ;
Abstract
Homopolymers and copolymers with an acrylic backbone chain having pendant side-chains containing a nitrone functional group undergo change in refractive index upon exposure to actinic radiation. Waveguides are 'written' in films containing such polymers by exposing predetermined areas to sufficient actinic radiation to change the refractive index.