Patents by Inventor Dieter Schweiss

Dieter Schweiss 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: 6399847
    Abstract: The present invention relates to a method of purifying 1,3,5-triisopropylbenzene that comprises combining inpure 1,3,5-triisopropylbenzene with a sulfonating agent to form a reaction mixture, mixing the reaction mixture at a temperature in the range of about 0° C. to about 50° C., and collecting the purified 1,3,5-triisopropylbenzene.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: June 4, 2002
    Assignee: Warner-Lambert Company
    Inventors: Gretchen Crumbaugh, Dieter Schweiss, Jonathan Charles Walker
  • Publication number: 20020028978
    Abstract: The present invention relates to a method of purifying 1,3,5-triisopropylbenzene that comprises combining impure 1,3,5-triisopropylbenzene with a sulfonating agent to form a reaction mixture, mixing the reaction mixture at a temperature at about 20° C. or above, and collecting the purified 1,3,5-triisopropylbenzene.
    Type: Application
    Filed: July 29, 1999
    Publication date: March 7, 2002
    Inventors: GRETCHEN CRUMBAUGH, DIETER SCHWEISS, JONATHAN CHARLES WALKER
  • Patent number: 6274740
    Abstract: A novel process for the preparation of amorphous atorvastatin is described where crystalline Form I atorvastatin is dissolved in a non-hydroxylic solvent and after removal of the solvent affords amorphous atorvastatin.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: August 14, 2001
    Assignee: Warner-Lambert Company
    Inventors: Min Lin, Dieter Schweiss
  • Patent number: 6087511
    Abstract: A process for the preparation of amorphous atorvastatin is described where crystalline Form I atorvastatin is dissolved in a non-hydroxylic solvent and after removal of the solvent affords amorphous atorvastatin.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: July 11, 2000
    Assignee: Warner-Lambert Company
    Inventors: Min Lin, Dieter Schweiss
  • Patent number: 4053470
    Abstract: Novel organic amide compounds which are N-[6-[(substituted amino)phenyl] 1,2-dihydro-2-oxonicotinyl]penicillin and cephalosporin type compounds having broad spectrum antibacterial utility are provided by (a) reacting the free amino acid of the appropriate penicillin or cephalosporin or the acid salt or silylated derivative thereof with a reactive derivative of the corresponding N-6-[(substituted amino)phenyl]-1,2-dihydro-2-oxonicotinic acid or (b) reacting the free amino acid 6-amino-penicillanic acid, 7-aminocephalosporanic acid, 7-amino-3-methylceph-3-em-4-carboxylic acid or a related compound or the acid salt or silylated derivative thereof with a reactive derivative of the corresponding D-N-[6-[(substituted amino)phenyl]-1,2-dihydro-2-oxonicotinyl]-2-substituted glycine. Pharmaceutical compositions containing said compounds and methods for treating infections using said compositions are also disclosed.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: October 11, 1977
    Assignee: Parke, Davis & Company
    Inventors: Leonard Doub, James S. Kaltenbronn, Dieter Schweiss
  • Patent number: 3954734
    Abstract: Novel organic amide compounds which are N-[6-[(substituted amino)phenyl]-1,2-dihydro-2-oxonicotinyl]penicillin and cephalosporin type compounds having broad spectrum antibacterial utility are provided by (a) reacting the free amino acid of the appropriate penicillin or cephalosporin or the acid salt or silylated derivative thereof with a reactive derivative of the corresponding N-6-[(substituted amino)phenyl]-1,2-dihydro-2-oxonicotinic acid or (b) reacting the free amino acid 6-amino-penicillanic acid, 7-aminocephalosporanic acid, 7-amino-3-methylceph-3-em-4-carboxylic acid or a related compound or the acid salt or silylated derivative thereof with a reactive derivative of the corresponding D-N-[6-[(substituted amino)phenyl]-1,2-dihydro-2-oxonicotinyl]-2-substituted glycine. Pharmaceutical compositions containing said compounds and methods for treating infections using said compositions are also disclosed.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: May 4, 1976
    Assignee: Parke, Davis & Company
    Inventors: Leonard Doub, James S. Kaltenbronn, Dieter Schweiss