Patents by Inventor Balazs Keszler

Balazs Keszler 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).

  • Amphiphilic networks, implantable immunoisolatory devices and methods of preparation
    Patent number: 6365171
    Abstract: The present invention provides high mechanical strength amphiphilic polymer networks and implantable biological devices that are capable of encasing and, thus, immunoisolating biological material from the immunological response of a host individual. The present invention also provides methods for the formation of the amphiphilic networks and implantable biological devices. The present invention also provides a method for the treatment of type I diabetes mellitus comprising the steps of encasing a sufficient amount of islet of Langerhans cells within said biological device, wherein said biological device is capable of immunoisolating said encased islet cells upon implantation into an individual; implanting said biological device into a diabetic host individual; allowing said implanted biological device to remain implanted said diabetic individual for a time sufficient to normalize the blood glucose level in said diabetic individual.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: April 2, 2002
    Assignee: The University of Akron
    Inventors: Joseph P. Kennedy, Balazs Keszler, Györgyi Fenyvesi
  • Three arm star compositions of matter having diblock arms based on polyisobutylene and methods of preparation
    Patent number: 6228945
    Abstract: The present invention relates to compositions of matter comprising a trifunctional aromatic core, said core having three arms radiating therefrom, wherein each of said arms is a diblock copolymer comprising an inner segment of polyisobutylene connected to a outer polymer segment obtained by a living radical polymerization process. The present invention also provides a process of preparing a composition of matter comprising the steps of: providing a trifunctional aromatic initiator core; reacting the trifunctional aromatic core with isobutylene to form a macroinitiator, said macroinitiator comprising polyisobutylene functionalized at the terminus of each said arm; conducting site transformation at the terminus of each arm to introduce a group capable of initiating living radical polymerization of outer segments at the terminus of each arm; performing living radical polymerization to form the outer polymer segments to produce a three arm star composition of matter having three diblock copolymer arms.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: May 8, 2001
    Assignee: The University of Akron
    Inventors: Joseph P. Kennedy, Balazs Keszler, Györgyi Fenyvesi
  • Process for preparing copolymers of elastomeric properties from olefinic monomers
    Patent number: 4097658
    Abstract: Copolymers having elastomeric properties are prepared by the polymerization of olefinic monomers with catalysts of modified Ziegler-Natta type, wherein a mixture of isobutylene and butadiene is used as olefinic monomer.The process renders possible the preparation of elastomeric copolymers from cheap raw materials, such as the C.sub.4 -fraction formed by the pyrolysis of gasoline.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: June 27, 1978
    Assignee: Muanyagipari Kutato Intezet
    Inventors: Artur Simon, Gyula Sarosi, Balazs Keszler, Attila Toth, Maria Rethy