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:
Jan. 16, 1996
Filed:
May. 27, 1994
Applicant:
Inventors:
Charles R Barmore, Moore, SC (US);
Christopher Bull, Bethesda, MD (US);
Assignee:
W.R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
73 38 ; 422 56 ; 422 80 ; 436-1 ; 436-5 ;
Abstract
A device for use in a method of detecting the permeability of an article to oxygen is disclosed. A redox indicator and test object are vacuum sealed between a support and a peelable barrier film.