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:
Dec. 07, 1976
Filed:
Oct. 29, 1975
Applicant:
Inventors:
Shou-Mean Fang, Lake Hiawatha, NJ (US);
Craig R Hof, Hopatcong, NJ (US);
Assignee:
Bio-Medical Sciences, Inc., Fairfield, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
2325 / ; 1161 / ; 426 88 ;
Abstract
A pouch for containing the gas generating means in a Time-Temperature Indicator which comprises a rate controlling film formed into a sealed pouch having contained therein a frangible ampule containing the gas generating means, said ampule being enclosed in a porous medium, said medium containing an indicator composition responsive to the gas generated by the gas generating means, so as to indicate a color change thereby making the user aware that the gas ampule has been broken.