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:
Nov. 29, 1988
Filed:
Mar. 16, 1987
Applicant:
Inventor:
Reinhard Maerz, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9612 ; 350 9619 ; 3501622 ; 35016223 ;
Abstract
A cut-off filter for integrated optics, which filter has a form of a relief-like surface grating on a film or strip waveguide, is formed in a portion of the strip waveguide having a reduced layer thickness and is formed with a constant corrugation depth. Preferably, the formation of the grating is done in a simple way by simultaneously etching a depression in the strip waveguide and also etching the grating structure onto the floor of the depression with the assistance of anisotropically acting etchants.
Maerz, Reinhard. (1988). Cut-off filter for integrated optics (U.S. Patent No. 4787690). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4787690
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile