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. 13, 1992
Filed:
Jul. 18, 1989
Applicant:
Inventors:
F Murphy Sprinkel, Glen Allen, VA (US);
John M Campbell, Midlothian, VA (US);
D Bruce Losee, Jr, Richmond, VA (US);
Assignee:
Philip Morris Incorporated, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D / ; A24D / ;
U.S. Cl.
CPC ...
131365 ; 131194 ; 131359 ; 131284 ;
Abstract
Thermal indicators for non-combustion smoking articles which chemically react when heated to provide visual indications of temperature changes are disclosed. The indicators comprise organic acids, sugars, or amines combined with sugars. The indicators are printed in a variety of patterns along the length of the smoking articles to show temperature changes and to indicate whether the smoking article is finished and should be discarded.