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:
Jun. 26, 1984
Filed:
Dec. 11, 1981
Applicant:
Inventor:
Edwin Langberg, Marlton, NJ (US);
Assignee:
Johnson & Johnson, New Brunswick, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356237 ; 250572 ; 356430 ;
Abstract
A method and apparatus is provided for determining the presence or absence of a coating on a substrate. The substrate is placed into optical contact with a light guide and the principle of frustrated total internal reflection is utilized. Light scattered from the coating surface is monitored to indicate the presence of a coating and failure to detect scattered light indicates the absence of said coating.
Langberg, Edwin. (1984). Detecting the presence or absence of a coating on a substrate (U.S. Patent No. 4456374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4456374
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile