Patents by Inventor Wilhelm Risse

Wilhelm Risse 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).

  • Chewing gums and gum bases comprising multi-block copolymers
    Patent number: 9980503
    Abstract: Chewing gums and chewing gum bases which are cud-forming and chewable at mouth temperature contains a multi-block copolymer having at least two repeating sequences of at least two different polymeric blocks having at least three monomer units each. The multi-block copolymer optionally includes linking units and may be formulated to have non-covalent crosslinking between the copolymer chains. The multi-block copolymer is optionally plasticized with a compatible di-block copolymer to function as an elastomer system in the gum base. Characteristics of the multi-block copolymers can be selected to produce gum bases and chewing gums having desired properties. In some cases, chewed cuds formed from the gum bases may exhibit improved removability from environmental surfaces to which they may become undesirably attached.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 29, 2018
    Assignees: Regents of the University of Minnesota, Wm. Wrigley Jr. Company
    Inventors: Leslie D. Morgret, Michael S. Haas, Marc A. Hillmyer, Wilhelm Risse, Frank S. Bates, Mark T Martello, Sangwoo Lee
  • CHEWING GUMS AND GUM BASES COMPRISING MULTI-BLOCK COPOLYMERS
    Publication number: 20140161931
    Abstract: Chewing gums and chewing gum bases which are cud-forming and chewable at mouth temperature contains a multi-block copolymer having at least two repeating sequences of at least two different polymeric blocks having at least three monomer units each. The multi-block copolymer optionally includes linking units and may be formulated to have non-covalent crosslinking between the copolymer chains. The multi-block copolymer is optionally plasticized with a compatible di-block copolymer to function as an elastomer system in the gum base. Characteristics of the multi-block copolymers can be selected to produce gum bases and chewing gums having desired properties. In some cases, chewed cuds formed from the gum bases may exhibit improved removability from environmental surfaces to which they may become undesirably attached.
    Type: Application
    Filed: March 9, 2012
    Publication date: June 12, 2014
    Applicants: REGENTS OF THE UNIVERSITY OF MINNESOTA, WM. WRIGLEY JR. COMPANY
    Inventors: Leslie D. Morget, Michael S. Haas, Marc A. Hillmyer, Wilhelm Risse, Frank S. Bates, Mark T Martello, Sangwoo Lee
  • Polymerization of cyclopentadiene using cationic palladium complexes
    Patent number: 6169153
    Abstract: A process for preparing cyclopentadiene homopolymers having a molecular weight in the range from 10,000 to 1,000,000 and less than 35% of 1,2 linkages uses palladium catalysts of the formula [Pd(R1—CN)4]2+(A)2—, where R1 is an alkyl group and A is a stable anion.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: January 2, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Wilhelm Risse, Christof Mehler, Eric Connor
  • Addition polymers of polycycloolefins containing functional substituents
    Patent number: 5705503
    Abstract: Addition polymers containing functionally substituted polycyclic repeat units are prepared in the presence of a single or multicomponent catalyst system containing a palladium metal ion source. The catalysts are not poisoned by functional substituents and show good catalytic activity for polymerizing both endo and exo isomers of the substituted monomers. Optionally, the polymers are terminated with olefinic end groups.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: January 6, 1998
    Inventors: Brian Leslie Goodall, Wilhelm Risse, Joice P. Mathew
  • Block copolymers of optionally substituted poly(oxy-1,4-phenylene) segments and liquid crystalline segments
    Patent number: 4769423
    Abstract: The invention relates to block copolymers of optionally substituted poly(oxy-1,4-phenylene) segments and liquid crystalline segments.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: September 6, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilhelm Risse, Walter Heitz
  • Process for the preparation of bifunctional polyphenylene oxide
    Patent number: 4677185
    Abstract: This invention relates to a new process for the preparation of bifunctional polyphenylene oxides.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: June 30, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Heitz, Wilhelm Risse
  • Process for the production of bifunctional polyphenylene ethers
    Patent number: 4521584
    Abstract: The invention relates to a new process for the production of polyphenylene oxides.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: June 4, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Heitz, Wilhelm Risse
  • Process for the production of bifunctional polyphenylene ethers
    Patent number: 4487918
    Abstract: The invention relates to a process for the production of bifunctional polyphenylene ethers.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: December 11, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Walter Heitz, Wilhelm Risse