Patents by Inventor Mark David Gehlsen

Mark David Gehlsen 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).

  • Breathable polymer foams
    Patent number: 7083849
    Abstract: A continuous method for making porous foam and the foam articles are described. The method allows for tailoring the porosity of the foam by controlling process variables including draw rate and blowing agent concentration. A method for co-extruding the foams with other materials is also described.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: August 1, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Bonnie Weiskopf Albrecht, Mark David Gehlsen, Connie Lynn Hubbard, David Loren Vall, Bryan C. Feisel
  • Pressure sensitive adhesive composition
    Patent number: 6777080
    Abstract: Pressure sensitive adhesive compositions and pressure sensitive adhesive articles containing the adhesive compositions are disclosed. The adhesive compositions of the invention generally demonstrate favorable cohesive strength at elevated temperatures. The adhesive compositions contain an acrylic acid ester copolymer having pendant styrenic polymeric moieties mixed with a polyarylene oxide polymer. The adhesive composition may be a foam.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: August 17, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Ashish Kumar Khandpur, Mark David Gehlsen, Kenneth Jason Hanley, John James Stradinger, Patrick Jay Fischer
  • Process for making foams by photopolymerization of emulsions
    Patent number: 6759080
    Abstract: The invention discloses methods for making foams by photopolymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are disclosed. Articles and uses for the foams are also described.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: July 6, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Kristin La Velle Thunhorst, Mark David Gehlsen, Robin Edgar Wright, Eric Wayne Nelson, Steven Dean Koecher, Douglas Gold
  • Reduced density foam articles and process for making
    Publication number: 20040033350
    Abstract: The invention discloses reduced density foams and methods of making the foams by applying or creating a nonfoaming barrier layer on a foamable layer, which barrier layer inhibits the escape of fugitive gases during the foaming process.
    Type: Application
    Filed: August 15, 2003
    Publication date: February 19, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Patent number: 6638985
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: October 28, 2003
    Assignee: 3M Innovative Properties Co.
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Pressure sensitive adhesive composition
    Publication number: 20030190468
    Abstract: Pressure sensitive adhesive compositions and pressure sensitive adhesive articles containing the adhesive compositions are disclosed. The adhesive compositions of the invention generally demonstrate favorable cohesive strength at elevated temperatures. The adhesive compositions contain an acrylic acid ester copolymer having pendant styrenic polymeric moieties mixed with a polyarylene oxide polymer. The adhesive composition may be a foam.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Ashish Kumar Khandpur, Mark David Gehlsen, Kenneth Jason Hanley, John James Stradinger, Patrick Jay Fischer
  • Reduced density foam articles and process for making
    Patent number: 6623674
    Abstract: The invention discloses reduced density foams and methods of making the foams by applying or creating a nonfoaming barrier layer on a foamable layer, which barrier layer inhibits the escape of fugitive gases during the foaming process.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: September 23, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Patent number: 6593380
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: July 15, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Patent number: 6586482
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: July 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Patent number: 6586489
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: July 1, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Foams made by photopolymerization of emulsions
    Patent number: 6573305
    Abstract: The invention discloses methods for making foams by photopolymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are disclosed. Articles and uses for the foams are also described.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: June 3, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Kristin LaVelle Thunhorst, Mark David Gehlsen, Robin Edgar Wright, Eric Wayne Nelson, Steven Dean Koecher, Douglas Gold
  • Process for making foams by photopolymerization of emulsions
    Publication number: 20020198271
    Abstract: The invention discloses methods for making foams by photopolymerizing emulsions comprising a reactive phase and a phase immiscible with the reactive phase components. Foams made from water-in-oil emulsions, including high internal phase emulsion are disclosed. Articles and uses for the foams are also described.
    Type: Application
    Filed: July 30, 2002
    Publication date: December 26, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Kristin La Velle Thunhorst, Mark David Gehlsen, Robin Edgar Wright, Eric Wayne Nelson, Steven Dean Koecher, Douglas Gold
  • Uniform small cell foams and a continuous process for making same
    Publication number: 20020169224
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Application
    Filed: November 27, 2001
    Publication date: November 14, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Publication number: 20020151608
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Application
    Filed: November 27, 2001
    Publication date: October 17, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Publication number: 20020151607
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Application
    Filed: November 27, 2001
    Publication date: October 17, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Publication number: 20020137808
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Application
    Filed: November 27, 2001
    Publication date: September 26, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Uniform small cell foams and a continuous process for making same
    Patent number: 6391931
    Abstract: A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: May 21, 2002
    Inventors: Mark David Gehlsen, David Loren Vall, Craig Allen Perman, Bonnie Weiskopf Albrecht
  • Thermoplastic/thermoset hybrid foams and methods for making same
    Patent number: 6323251
    Abstract: Foams comprising blends of thermoplastic and thermoset materials wherein the thermoset forms a discontinuous phase in a continuous thermoplastic phase are described. Foams comprising an uncured thermoset and unreacted radiation-activatable curing agent in a thermoplastic matrix are also described. Additionally described are batch and continuous methods for making the foams. Particular uses for the foams, such as flexographic mounting tapes, are also described.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: November 27, 2001
    Inventors: Mario Alberto Perez, Robert Dennis Waid, John Ekrem Gozum, Cheryl Lee Senger Elsbernd, Mark David Gehlsen
  • Radiation curable poly(1-alkene) based pressure-sensitive adhesives
    Patent number: 6177190
    Abstract: The present invention relates to pressure-sensitive adhesive compositions. The compositions comprise a poly(1-alkene) pressure-sensitive adhesive component, a non-pressure-sensitive adhesive component, and a radiation-activatable curing agent. The invention further provides pressure-sensitive adhesive tapes and methods for making the compositions and tapes.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: January 23, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Mark David Gehlsen, Chad Everett Brown, Patrick Darby Hyde, Eugene Gregory Joseph, Vasant Venugopal Kolpe