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:
Oct. 12, 1982
Filed:
Feb. 09, 1981
Applicant:
Inventors:
Wendell J Manske, Birchwood, MN (US);
Paul M Hawkins, Burlington, KY (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C12M / ; G01D / ; G01K / ; C12M / ;
U.S. Cl.
CPC ...
435287 ; 116207 ; 116216 ; 116217 ; 116219 ; 422 57 ; 435 31 ; 435291 ; 435805 ; 374106 ; 374160 ;
Abstract
A device for monitoring thermal energy input and displaying the relationship of the thermal energy input to a selected time/temperature relationship. The device employs an indicating material which, when melted, expands and flows into a narrow channel to provide an irreversible, visible indication of the thermal energy to which the device has been exposed.
Manske, Wendell. (1982). Sanitation indicator (U.S. Patent No. 4353990). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4353990
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile