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. 19, 2013
Filed:
Jan. 15, 2010
Applicant:
Raymond M. Robertson, Blacksburg, VA (US);
Inventor:
Raymond M. Robertson, Blacksburg, VA (US);
Assignee:
Celanese Acetate LLC, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24B 15/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A degradable cigarette filter includes a filter element of a bloomed cellulose acetate tow and a plug wrap surrounding the filter element, and a pill dispersed in the tow. The pill includes a material adapted to catalyze hydrolysis of the cellulose acetate tow that is encapsulated with an inner layer of a water soluble or water permeable material and an outer layer of a cellulose acetate having a D.S. in the range of 2.0-2.6.
Quick Actions:
Robertson, Raymond. (2013). Degradable cigarette filter: pill with multilayered coating (U.S. Patent No. 8397733). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8397733
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile