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:
Nov. 14, 1989
Filed:
Sep. 09, 1988
Michael Szycher, Lynnfield, MA (US);
Jonathan L Rolfe, North Easton, MA (US);
Thermedics, Inc., Woburn, MA (US);
Abstract
A perfume patch comprising a fragrance-emitting member having a fragrance dispersed within an ultra-thin polyurethane membrane. A layer of pressure sensitive adhesive is applied to adhere the member to a surface. The polyurethane is formed from a diisocyanate, a macroglycol, and an acrylyl chain terminator to which a photoinitiator and a fragrance oil are added prior to curing. A barrier layer may be applied by an adhesive or other suitable means to prevent migration of the fragrance oil to the adhesive so that no residue of adhesive remains on the surface. The perfume patch preferably includes a support for the fragrance-emitting member for ease in application and handling.