Patents by Inventor Ulf Schroder

Ulf Schroder 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).

  • Ultrasonic contrast agent comprising carbohydrate particles
    Patent number: 5670135
    Abstract: A method of contrast enhanced ultrasonic diagnostic imaging comprising: administering to a subject a contrast enhancing amount of spheres or particles comprising a matrix enclosing a contrast agent which reflects sound waves, said matrix being a biocompatible, biodegradable, non-immunogenic non-polyamino acid synthetic polymer; and generating an ultrasonic image of said subject.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: September 23, 1997
    Assignee: Nycomed Imaging AS
    Inventor: Ulf Schroder
  • Water dispersible and water soluble carbohydrate polymer compositions for parenteral administration of growth hormone
    Patent number: 5456922
    Abstract: The present invention relates to compositions of water dispersible and water soluble carbohydrate polymers and biologically active macromolecules of growth hormones, somatomedins, growth factors, and other biologically active fragments which are suitable for parenteral administration. The present invention also relates to a method for increasing and for maintaining increased levels of growth hormone in the blood of treated animals for extended periods of time, increasing weight gains in animals, and increasing milk production of lactating animals by the administration of the compositions of the invention.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: October 10, 1995
    Assignee: American Cyanamid Company
    Inventors: Susan M. Cady, Richard Fishbein, Ulf Schroder, Hakan Eriksson, Brenda L. Probasco
  • Water dispersible and water soluble carbohydrate polymer compositions for parenteral administration of growth hormone
    Patent number: 5266333
    Abstract: The present invention relates to compositions of water dispersible and water soluble carbohydrate polymers and biologically active macromolecules of growth hormones, somatomedins, growth factors, and other biologically active fragments which are suitable for parenteral administration. The present invention also relates to a method for increasing and for maintaining increased levels of growth hormone in the blood of treated animals for extended periods of time, increasing weight gains in animals, and increasing milk production of lactating animals by the administration of the compositions of the invention.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: November 30, 1993
    Assignee: American Cyanamid Company
    Inventors: Susan M. Cady, Richard Fishbein, Ulf Schroder, Hakan Eriksson, Brenda L. Probasco
  • Crystallized carbohydrate matrix for biologically active substances, a process of preparing said matrix, and the use thereof
    Patent number: 4713249
    Abstract: The invention shows that it is possible to produce a depot matrix for biologically active substances, consisting of carbohydrate microspheres, such that the carbohydrate polymers included in the microsphere are stabilized to a microsphere by crystallization, which implies using non-covalent bonds, the substance enclosed retaining its biological activity.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: December 15, 1987
    Inventor: Ulf Schroder
  • Magnetic carbohydrate particles as carriers for affinity separation purposes
    Patent number: 4687748
    Abstract: Magnetically responsive spheres having an average diameter less than 1,000 nm are prepared by dissolving a carbohydrate polymer in a polar solvent, suspending magnetic material in the dissolved carbohydrate, emulsifying the suspension with an emulsion liquid to form an emulsion containing droplets of the suspension and then contacting the emulsion with a crystallizing liquid capable of crystallizing the carbohydrate polymer. The resulting spheres may be bonded with a bioabsorptive material and can be employed in processes such as cell separation, affinity purification or immunochemical assays.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: August 18, 1987
    Assignee: Gambro Lundia AB
    Inventor: Ulf Schroder
  • Intravascularly administrable, magnetically responsive nanosphere or nanoparticle, a process for the production thereof, and the use thereof
    Patent number: 4501726
    Abstract: An intravascularly administrable, magnetically responsive nanosphere or nanoparticle made up of a crystalline carbohydrate matrix, preferably starch, enclosing a magnetic material, is described. The nanosphere or nanoparticle is produced by dissolving a carbohydrate together with a magnetic material to form a solution which is emulsified in a hydrophobic solvent from which the carbohydrate is crystallized.The resulting magnetic nanospheres having an average diameter not exceeding 1500 nm are capable of transporting pharmacologically active substances and can be injected intravenously for subsequent concentration in a part of the body by means of a magnetic field.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: February 26, 1985
    Inventors: Ulf Schroder, Klaus Mosbach