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:
Apr. 25, 1978
Filed:
Sep. 10, 1976
Applicant:
Inventors:
Iwao Toyoshima, Tondabayashi, JA;
Kunio Ishii, Himeji, JA;
Hideo Sawada, Osaka, JA;
Junji Kawamoto, Sakai, JA;
Hiromu Yokota, Himeji, JA;
Assignee:
Daicel Ltd., Sakai, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24B / ;
U.S. Cl.
CPC ...
131268 ;
Abstract
A tobacco filter comprised of cellulose acetate fibers prepared by contacting cellulose fibers in the solid fiberous state, with a gaseous or liquid acetylating agent.