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:
Jul. 25, 2000
Filed:
Jul. 18, 1997
Applicant:
Inventors:
ANG.ke Stenholm, Upplands-Vasby, SE;
Lars Karlsson, Norsborg, SE;
Anders Lofgren, Hagersten, SE;
Bo Nystrom, Sollentuna, SE;
Otto Skolling, Solna, SE;
Assignee:
Pharmacia & Upjohn AB, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
436-1 ; 422 56 ; 436-2 ; 436-3 ; 436136 ; 436138 ; 436166 ;
Abstract
The present invention relates to new color compositions which are especially suitable to be used in oxygen indicators. The compositions comprise iron(II), an agent containing pyrogallol entities and an organic acid.