Patents by Inventor Torrence B. Stahl

Torrence B. Stahl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • THERMALLY STABLE MELTBLOWN WEB COMPRISING MULTILAYER FIBERS
    Publication number: 20170191197
    Abstract: A thermally stable meltblown fibrous web, including a plurality of meltblown multilayer fibers, in which at least some of the meltblown multilayer fibers each include at least one primary layer that includes a primary polymer that is slow-crystallizing with a Tm of at least about 200° C., and at least one secondary layer that includes a secondary polymer that is fast-crystallizing with a Tm of at least about 200° C.
    Type: Application
    Filed: June 11, 2015
    Publication date: July 6, 2017
    Inventors: Sachin TALWAR, Torrence B. STAHL, Eugene G. JOSEPH
  • Nonwoven webs and multi-component fibers comprising a polydiorganosiloxane polyamide and methods of melt blowing
    Patent number: 9617668
    Abstract: The present invention pertains to nonwoven webs, and multi-component fibers comprising polydiorganosiloxane polyamide as well as method of making microfibers and multi-component fibers comprising a polydiorganosiloxane polyamide copolymer.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: April 11, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joon Chatterjee, Donald R. Battles, Matthew T. Scholz, David S. Hays, Bradley W. Eaton, Torrence B. Stahl
  • NONWOVEN WEBS AND MULTI-COMPONENT FIBERS COMPRISING A POLYDIORGANOSILOXANE POLYAMIDE AND METHODS OF MELT BLOWING
    Publication number: 20140163446
    Abstract: The present invention pertains to nonwoven webs, and multi-component fibers comprising polydiorganosiloxane polyamide as well as method of making microfibers and multi-component fibers comprising a polydiorganosiloxane polyamide copolymer.
    Type: Application
    Filed: August 8, 2012
    Publication date: June 12, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Joon Chatterjee, Donald R. Battles, Matthew T. Scholz, David S. Hays, Bradley W. Eaton, Torrence B. Stahl
  • Liquid filtration systems
    Patent number: 7828969
    Abstract: Provided are filter elements and methods of making and using the same where the filter elements are suitable for liquid filtration and contain particle-loaded meltblown fiber webs. A filter element comprises: a porous article comprising a web of self-supporting nonwoven polymeric fibers and a plurality of sorbent particles enmeshed in the web, the article comprising a first surface and a second surface; a liquid-impermeable housing surrounding the porous article; an inlet in fluid communication with the first surface; and an outlet in fluid communication with the second surface. Spiral-wound webs, web-covered blocks, and stacked disks of webs are also provided.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: November 9, 2010
    Assignee: 3M Innovative Properties Company
    Inventors: Bradley W. Eaton, William J. Feil, III, Torrence B. Stahl, Thund Y. Watt, Mark W. Schimmel
  • LIQUID FILTRATION SYSTEMS
    Publication number: 20090039028
    Abstract: Provided are filter elements and methods of making and using the same where the filter elements are suitable for liquid filtration and contain particle-loaded meltblown fiber webs. A filter element comprises: a porous article comprising a web of self-supporting nonwoven polymeric fibers and a plurality of sorbent particles enmeshed in the web, the article comprising a first surface and a second surface; a liquid-impermeable housing surrounding the porous article; an inlet in fluid communication with the first surface; and an outlet in fluid communication with the second surface. Spiral-wound webs, web-covered blocks, and stacked disks of webs are also provided.
    Type: Application
    Filed: August 7, 2007
    Publication date: February 12, 2009
    Inventors: Bradley W. Eaton, William J. Feil, III, Torrence B. Stahl, Thund Y. Watt, Mark W. Schimmel