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:
Jan. 03, 1995
Filed:
Dec. 24, 1992
Applicant:
Inventors:
Yasuo Matsumura, Yokohama, JP;
Shogo Miyata, Yokohama, JP;
Kanji Kusada, Yokosuka, JP;
Kaede Terauchi, Kawasaki, JP;
Assignee:
Nippon Petrochemicals Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526 64 ; 526 71 ; 5263292 ;
Abstract
A method for preparing a polymer rod for optical transmission media. The process involves copolymerization of monomers having different boiling points by removal of monomer vapor during polymerization. The process results in a transition in refractive index along the radial direction of the polymer rod.