Patents by Inventor Robert Bierling

Robert Bierling 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).

  • Carcinostatic agent
    Patent number: 4757072
    Abstract: A carcinostatic composition useful in inhibiting the growth of colon and/or rectal tumors comprising 8-amino-12-oxo-10, 12-dihydroindolo [1,2-b]-quinazoline of the formula: ##STR1##
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: July 12, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Joachim Kabbe, Robert Bierling, Ghanem Atassi
  • Agents having a tumor-inhibiting action and their use
    Patent number: 4440892
    Abstract: The invention relates to pharmaceutical compositions containing, as an active ingredient, a water-soluble polyester or polycarbonate based on one or more polyetherglycols of Formula (I) as defined in the specification. Also included in the invention is the use of said compositions for their tumor-inhibiting action.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: April 3, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard D. Wolf, Bruno Bomer, Robert Bierling
  • Process for the preparation of immunopotentiating agents from components of yeast cell wall material
    Patent number: 4138479
    Abstract: A water soluble immunopotentiating agent is derived from yeast cell wall material, including mechanically disrupted yeast cell walls, proteolyzed yeast cell wall material and carbohydrate-protein complexes found in yeast cell wall material, through extraction with a water-phenol mixture. The water soluble agent is isolated from the water phase and can be further purified, as through dialysis, to remover low molecular weight components.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: February 6, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst Truscheit, Robert Bierling, Horst D. Schlumberger, Herbert F. Oettgen
  • Urethane derivatives of 2-phenyl-4(3H)-quinazolones
    Patent number: 3932409
    Abstract: 2-Phenyl-4(3H)-quinazolones bearing a urethane or thiourethane group on the 2-phenyl substituent, a second urethane or thiourethane group on the benzo ring of the quinazolone nucleus and an alkyl, cycloalkyl or phenyl group in the 3-position are prepared by treating the corresponding bis-amino compound with an acid derivative or the corresponding bis(isocyanate) or bis(isothiocyanate) with an alcohol. The compounds, of which 2-[3'-(methoxycarbonylamino)-phenyl]-3-phenyl-6-methoxycarbonylamino-4-(3H )-quinazolone is a typical embodiment, are cytostatic agents.
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: January 13, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Egon Kunzel, Gerhard Dieter Wolf, Robert Bierling, Siegfried Petersen, Gunther Nischk, Dieter Steinhoff