Patents by Inventor Ulf S. E. Rothman

Ulf S. E. Rothman 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: 4931284
    Abstract: The invention relates to a completely novel type of micro-capsules, viz. such capsules where an encapsulated hydrophobic or lipophilic substance is surrounded by polar solid crystals of polar lipids which expose their hydrophilic face outwards and their hydrophobic face turned inwards towards the hydrophobic or lipophilic substance. These micro-capsules can be utilized to encapsulate for instance tacky substances or substances to be protected against oxidation or influence from light. Moreover, an especially interesting use according to the invention is the use of said micro-capsules in an ointment base, where the active ingredient is well protected within said capsules up to the use but which at the application on the skin directly comes into contact with the skin surface as a consequence of the crystalline structure of the shell.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: June 5, 1990
    Assignee: Biogram AB
    Inventors: Bo M. Ekman, Kare V. Larsson, Ake R. Lindahl, Ulf S. E. Rothman
  • Patent number: 4788114
    Abstract: In an electrode for an electrochemical cell, the solid active electrode material is accomodated in a plurality of electrolyte-permeable hollow fibres, preferably of yieldable plastic.An electrochemical cell comprises at least one such electrode.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: November 29, 1988
    Assignee: Inclusion AB
    Inventor: Ulf S. E. Rothman
  • Patent number: 4550020
    Abstract: The invention relates to certain polypeptide fractions for use as an anti-microbial drug, drug compositions containing such polypeptide fractions, methods of reducing the infectivity possibilities of microbes by administering the polypeptide fractions, methods of preparing antisera using the polypeptide fraction, and a method of preparing the polypeptide fraction.The polypeptide fractions are characterized in that they are isolated from the body fluids of mussels, in particular Mytilus species such as blue mussel (Mytilus edulis), and in that they are capable of biospecifically binding sialic acid. The polypeptide fractions are active against a broad spectrum of viruses, bacteria and protozoa.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: October 29, 1985
    Inventor: Ulf S. E. Rothman
  • Patent number: 4537767
    Abstract: The present invention relates to a method and material for cleansing fluid discharging skin surfaces, wounds and mucous membranes, which method and material includes the use of a material comprising certain water-insoluble hydrophilic polymers.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: August 27, 1985
    Assignee: Pharmacia Aktiebolag
    Inventors: Ulf S. E. Rothman, Sten A. L. Jacobsson
  • Patent number: 4225580
    Abstract: The present invention relates to a method and material for cleansing fluid discharging skin surfaces, wounds and mucous membranes, which method and material includes the use of a material comprising certain water-insoluble hydrophilic polymers.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: September 30, 1980
    Assignee: Pharmacia Aktiebolag
    Inventors: Ulf S. E. Rothman, Sten A. L. Jacobsson
  • Patent number: 4215693
    Abstract: A biological surgical dressing, especially a surgical dressing for wounds composed of a combination of collagen fibers and carbamide, primarily in a ratio of 65 to 99 percent by weight collagen fibers and 1 to 35 percent by weight carbamide.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: August 5, 1980
    Inventors: Ulf S. E. Rothman, Sven C. Frederiksen, Bernt O. Leube
  • Patent number: 4126669
    Abstract: A diagnostic agent for intravascular administration into blood vessels composed of radioactively labelled particles suspended in a physiologically acceptable aqueous liquid, said particles having a size so selected that they clog fine blood vessels having a diameter within the range 5 - 300 .mu.m, said particles consisting of a three-dimensional, water-insoluble, hydrophilic, swellable, cross-linked network of polysaccharide substances, and the method of using this diagnostic agent.
    Type: Grant
    Filed: February 9, 1977
    Date of Patent: November 21, 1978
    Assignee: Pharmacia Aktiebolag
    Inventors: Ulf S. E. Rothman, Bernt J. Lindberg
  • Patent number: 4124705
    Abstract: The present invention relates to an agent for intravascular administration, said agent consisting of a suspension of minute polysaccharide particles having a size such that subsequent to being administered intravascularly, they block the finer blood vessels of the body and a diagnostic agent.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: November 7, 1978
    Assignee: Pharmacia Aktiebolag
    Inventors: Ulf S. E. Rothman, Bernt J. Lindberg