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:
May. 17, 1977
Filed:
Dec. 22, 1975
Applicant:
Inventors:
Ernest Elliott Spinner, Grandview, MO (US);
Melvin Wayne Hounsell, Beloit, WI (US);
Assignee:
Marion Laboratories, Inc., Kansas City, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2325 / ;
Abstract
A color indicator apparatus for determining the presence of oxygen which comprises a container which permits flow of gas thereto, an ampoule in the container, said ampoule containing a redox color indicator liquid, and an absorbent material, for the liquid in the ampoule, in the container. Typically the redox color indicator is methylene blue or resazurin. The apparatus is useful for determining if an anaerobic atmosphere exists around a micro-organism culture.