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:
Sep. 16, 1980
Filed:
Nov. 21, 1977
Applicant:
Inventors:
Albert Frosch, Herrenberg, DE;
Gerhard Holzinger, Sindelfingen, DE;
Walter Jaerisch, Boeblingen, DE;
Claus Scheuing, Lorch, DE;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356360 ;
Abstract
This invention relates to an interferometric process, and particularly to a process for examining the planarity of surfaces.