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:
Jul. 09, 1991
Filed:
Jun. 11, 1990
Applicant:
Inventors:
Jochen Coutandin, Langenlonsheim, DE;
Werner Groh, Lich, DE;
Peter Herbrechtsmeier, Konigstein am Taunus, DE;
Jurgen Theis, Frankfurt am Main, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; B79C / ;
U.S. Cl.
CPC ...
156643 ; 156633 ; 156654 ; 156668 ; 21912164 ; 350 9621 ; 350 9615 ;
Abstract
Channels in which polymeric optical waveguides can be laid can be milled in surfaces of plastic sheets by means of an excimer laser. The free space between the optical waveguides is filled up with a transparent casting resin. The channels produced by means of the laser are distinguished by high dimensional accuracy and low surface roughness.