Patents by Inventor Walter Petri

Walter Petri 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: 5663198
    Abstract: Drug formulations comprising coated, very sparingly water-soluble drugs for inhalational pharmaceutical forms, and process for their preparation.Drug formulations comprising micronized particles of very sparingly water-soluble drugs which are coated with a natural, physiologically acceptable ampholytic surfactant soluble in water to give a micellar/colloidal solution, and a process for the preparation of these drug formulations, are described. When placed in an appropriate final container and after the addition of a chlorine-free, partially fluorinated propellant gas liquefiable under pressure, these formulations are suitable for inhalation.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: September 2, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Bernhard Reul, Walter Petri
  • Patent number: 5362721
    Abstract: The disclosed invention includes corticoid-17-alkylcarbonates substituted in the 17-position, a process for their preparation and pharmaceuticals containing them. These corticoid-17-alkylcarbonates have the following formula I ##STR1## where A is CHOH in any desired steric arrangement, C.dbd.O or CH.sub.2 ; Y is H, F, or Cl; Z is H, F or CH.sub.3 ; R(1) is O-acyl, carbonylalkyl, alkylsulfonate or arylsulfonate;R(2) is branched alkyl or (CH.sub.2).sub.2-4 --OCH.sub.3 andR(3) is H or methyl. They have excellent local and topical antiinflammatory action. They are distinguished by a particularly good ratio of local to systemic antiinflammatory activity and in some cases also show stronger local antiinflammatory activities than their isomeric corticoid-17-alkylcarbonates having a linear alkyl group in the 17-alkylcarbonate moiety.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: November 8, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ulrich Stache, Walter Durckheimer, Hans G. Alpermann, Walter Petri
  • Patent number: 5081150
    Abstract: Calcium lactate-glycerol adduct, a molecular compound of 1 mole of calcium lactate and 2 moles of glycerol, and a process for its preparation are described. The adduct can be used as a calcium donor or auxiliary in pharmacy, cosmetics and the production of foodstuffs.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: January 14, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Bernhard Reul, Walter Petri
  • Patent number: 4894232
    Abstract: A base for mucosal and denture adhesive pastes, a process for the preparation thereof, and pastes having this base.A base for mucosal and denture adhesive pastes, pastes having this base, and a process for the preparation thereof, are described.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: January 16, 1990
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Bernhard Reul, Walter Petri
  • Patent number: 4302448
    Abstract: What are disclosed are secretin preparations with an intensified and protracted action, especially subcutaneously and rectally administrable preparations containing phenolic depot bodies. A process for the manufacture of the preparations and their use as well as phenolic depot bodies and the manufacture thereof are described.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: November 24, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Martin Bickel, Rolf Geiger, Richard Leeb, Walter Petri