Patents by Inventor Karl B. Richter

Karl B. Richter 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).

  • Patent number: 11001962
    Abstract: Siliconized fibrous webs are described. The siliconized webs include a fibrous web saturated with an electron beam cured silicone composition. Siliconized webs with electron beam cured silicone coating are also described. Methods of preparing both the coated and uncoated siliconized fibrous webs are also described.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 11, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Junkang J. Liu, Lang N. Nguyen, Karl B. Richter, Roy Wong, Panu K. Zoller
  • Publication number: 20190153665
    Abstract: Siliconized fibrous webs are described. The siliconized webs include a fibrous web saturated with an electron beam cured silicone composition. Siliconized webs with electron beam cured silicone coating are also described. Methods of preparing both the coated and uncoated siliconized fibrous webs are also described.
    Type: Application
    Filed: January 23, 2019
    Publication date: May 23, 2019
    Inventors: Junkang J. Liu, Lang N. Nguyen, Karl B. Richter, Roy Wong, Panu K. Zoller
  • Patent number: 10202721
    Abstract: Siliconized fibrous webs are described. The siliconized webs include a fibrous web saturated with an electron beam cured silicone composition. Siliconized webs with electron beam cured silicone coating are also described. Methods of preparing both the coated and uncoated siliconized fibrous webs are also described.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: February 12, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Junkang J. Liu, Lang N. Nguyen, Karl B. Richter, Roy Wong, Panu K. Zoller
  • Patent number: 9708514
    Abstract: Methods of (co)polymerizing ethylenically-unsaturated materials, including the steps of providing a non-deaerated mixture of free radically (co)polymerizable ethylenically-unsaturated material in a batch reactor, exposing the non-deaerated mixture to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the free radically (co)polymerizable ethylenically-unsaturated material, and allowing the free radically (co)polymerizable ethylenically-unsaturated material to (co)polymerize under essentially adiabatic conditions while continuing to expose the mixture to the source of ionizing radiation for a time sufficient to yield an at least partially (co)polymerized (co)polymer. The ethylenically-unsaturated materials are selected from vinyl-functional monomers, vinyl-functional oligomers, vinyl-functional macromers, and combinations thereof. The mixture is preferably free of thermally-induced or UV-induced free radical polymerization initiators.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: July 18, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Sasha B. Myers, Daniel J. O'Neal, Karl B. Richter, Thu-Van T. Tran, Craig E. Hamer
  • Publication number: 20150298366
    Abstract: Methods of (co)polymerizing ethylenically-unsaturated materials, including the steps of providing a mixture of free radically (co)polymerizable ethylenically-unsaturated material in a mold, exposing the mixture in the mold to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the free radically (co)polymerizable ethylenically-unsaturated material, and allowing the free radically (co)polymerizable ethylenically-unsaturated material to (co)polymerize in the mold while continuing to expose the mixture to the source of ionizing radiation for a time sufficient to yield an at least partially (co)polymerized (co)polymer. The ethylenically-unsaturated materials are selected from vinyl-functional monomers, vinyl-functional oligomers, vinyl-functional macromers, and combinations thereof. The mixture is preferably free of thermally-induced or UV-induced free radical polymerization initiators.
    Type: Application
    Filed: December 6, 2013
    Publication date: October 22, 2015
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl B. Richter, Sasha B. Myers, Daniel J. O'Neal, Thu-Van T. Tran, Craig E. Hamer
  • Publication number: 20150299532
    Abstract: Methods of (co)polymerizing ethylenically-unsaturated materials, including the steps of providing a non-deaerated mixture of free radically (co)polymerizable ethylenically-unsaturated material in a batch reactor, exposing the non-deaerated mixture to a source of ionizing radiation for a time sufficient to initiate (co)polymerization of at least a portion of the free radically (co)polymerizable ethylenically-unsaturated material, and allowing the free radically (co)polymerizable ethylenically-unsaturated material to (co)polymerize under essentially adiabatic conditions while continuing to expose the mixture to the source of ionizing radiation for a time sufficient to yield an at least partially (co)polymerized (co)polymer. The ethylenically-unsaturated materials are selected from vinyl-functional monomers, vinyl-functional oligomers, vinyl-functional macromers, and combinations thereof. The mixture is preferably free of thermally-induced or UV-induced free radical polymerization initiators.
    Type: Application
    Filed: December 6, 2013
    Publication date: October 22, 2015
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Sasha B. Myers, Daniel J. O'Neal, Karl B. Richter, Thu-Van T. Tran, Craig E. Hamer
  • Publication number: 20140093727
    Abstract: A method including: a. coating at least a portion of at least one major surface of a substrate with a polymerizable composition to obtain a coated surface; b. initiating polymerization of the polymerizable composition by scanning a first electron-beam focused on the coated surface across at least a portion of the coated surface, thereby irradiating the coated surface at a frequency selected to achieve an exposure duration of greater than 0 and no greater than 10 microseconds, and a dark time between each exposure duration of at least one millisecond, thereby producing an at least partially polymerized composition. A pressure sensitive adhesive article and a cross-linked silicone release liner made according to the method are also disclosed.
    Type: Application
    Filed: May 22, 2012
    Publication date: April 3, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Karl B. Richter, Douglas S. Dunn, Douglas E. Weiss
  • Publication number: 20130210300
    Abstract: Siliconized fibrous webs are described. The siliconized webs include a fibrous web saturated with an electron beam cured silicone composition. Siliconized webs with electron beam cured silicone coating are also described. Methods of preparing both the coated and uncoated siliconized fibrous webs are also described.
    Type: Application
    Filed: April 19, 2011
    Publication date: August 15, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Junkang J. Liu, Lang N. Nguyen, Karl B. Richter, Roy Wong, Panu K. Zoller
  • Publication number: 20120227809
    Abstract: An assembly including a pressure sensitive adhesive layer at least 0.25 mm in thickness disposed on a barrier assembly, wherein the barrier assembly comprises a polymeric film substrate and a barrier film. The assembly is flexible and transmissive to visible and infrared light. A pressure sensitive adhesive in the form of a film at least 0.25 mm thick is also provided, the pressure sensitive adhesive including a polyisobutylene having a weight average molecular weight less than 300,000 grams per mole; and a hydrogenated hydrocarbon tackifier. Methods of making and using the assembly and the pressure sensitive adhesive are also included.
    Type: Application
    Filed: November 17, 2010
    Publication date: September 13, 2012
    Inventors: Vivek Bharti, Timothy J. Hebrink, Andrew J. Henderson, Jay M. Jennen, Alan K. Nachtigal, Gregg A. Patnode, Karl B. Richter, Mark A. Roehrig, Mark D. Weigel
  • Publication number: 20100209693
    Abstract: Hydrophilic porous substrates, methods of making hydrophilic porous substrates from hydrophobic polymers are disclosed.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Inventors: Jonathan F. Hester, Karl B. Richter, Clinton P. Waller, JR., Douglas E. Weiss
  • Publication number: 20100210160
    Abstract: Hydrophilic porous substrates, methods of making hydrophilic porous substrates from hydrophobic polymers are disclosed.
    Type: Application
    Filed: February 8, 2010
    Publication date: August 19, 2010
    Inventors: Jonathan F. Hester, Karl B. Richter, Clinton P. Waller, JR., Douglas E. Weiss