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:
Aug. 01, 1989
Filed:
Jan. 29, 1988
Applicant:
Inventor:
Stephen S Hupp, Dublin, OH (US);
Assignee:
Ashland Oil, Inc., Russell, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; G01B / ;
U.S. Cl.
CPC ...
358107 ; 356376 ; 73105 ;
Abstract
The short-term and long-term waviness of a smooth surface is determined quantitatively by a method which impinges light radiation onto the surface, detects the resultant light image, and mathematically processes that image. The method permits a fast, non-contact evaluation of a smooth surface with good correlation between the calculated values and the visual observation.