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:
Jul. 05, 1977
Filed:
Feb. 26, 1975
Applicant:
Inventors:
Sven-Olof Almqvist, Saltsjobaden, SW;
Curt R Enzell, Lidingo, SW;
Lasse O Hjern, Vallentuna, SW;
Antoine Artho, Boncourt, CH;
Robert Koch, Porrentruy, CH;
Assignees:
Svenska Tobaks AB, Stockholm, SW;
F.J. Burrus & Cie, Boncourt, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24D / ;
U.S. Cl.
CPC ...
131264 ; 131 / ;
Abstract
The present invention relates to a new type of filter for tobacco smoke, which filter has a diffusion portion, in which the smoke stream is separated from the outer air by means of a membrane, which is permeable to low molecular smoke constituents.
Quick Actions:
Almqvist, Sven-Olof. (1977). Filter for tobacco smoke (U.S. Patent No. 4033362). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4033362
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile