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:
Mar. 29, 1977
Filed:
Jul. 15, 1975
Applicant:
Inventor:
Richard Norris Knowles, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
424324 ; 5-1 ; 116 / ; 1161 / ; 297463 ; 424244 ; 424267 ; 424272 ; 424274 ; 424302 ; 424304 ; 424322 ; 424330 ;
Abstract
A system for warning people of a fire hazard comprising a flammable substrate having bound thereto a non-vaporous organic compound of molecular weight below 400, which forms a respiratory irritant upon being vaporized. The organic compound remains bound to the substrate in non-vaporous form under normal conditions of use, but is vaporized from the surface upon exposure to temperature no lower than about 200.degree. C.
Knowles, Richard. (1977). Chemical fire alarm (U.S. Patent No. 4015015). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4015015
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile