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:
Jan. 22, 2019
Filed:
Oct. 28, 2014
Liberman Distributing and Manufacturing Co., St. Paul, MN (US);
Ashley Saar, Woodbury, MN (US);
David A. Gray, St. Paul, MN (US);
Robert M. Hume, Woodbury, MN (US);
Mark A. Litman, Edina, MN (US);
Other;
Abstract
A filter material for entrapping particles and actively affecting the trapped particles within the filter. The fabric has a blend of hydrophilic superabsorbent fibers and non-superabsorbent hydrophilic fibers that is sufficiently porous as to allow gaseous flow through the fabric. The fabric having a thickness and the fabric has as a coating of a mixture of a chemically or physically active compound and a liquid carrier forming an active composition on both the outer surface of the hydrophilic superabsorbent fibers, and the hydrophilic superabsorbent fibers have a central volume also retaining the active composition. The central volume of the hydrophilic superabsorbent fibers acting as a reservoir for replacement of the active compound into the coating when concentration of active compounds in the coating are reduced to a concentration less than concentrations of the active compound within the central volume; and the liquid carrier is an aqueous liquid.