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:
Aug. 13, 1991
Filed:
Jul. 07, 1987
Applicant:
Inventor:
Dennis P O'Brien, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B43K / ;
U.S. Cl.
CPC ...
401 49 ; 434 84 ;
Abstract
Crayons are provided with microcapsules containing fragrant materials within the shell of the microcapsules. Applying color to surfaces ruptures some of the microcapsules and releasing a fragrance. Some microcapsules remain intact within the color applied to the surface and may be ruptured by abrading the coloration on the surface. The colors and fragrances may be chosen to correspond with each other.
O'Brien, Dennis. (1991). Fragrance releasing crayons (U.S. Patent No. 5039243). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5039243
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile