Patents by Inventor Robert A. Scherrer

Robert A. Scherrer 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).

  • Amine derivatives of 2-nitro-3-phenylbenzofuran
    Patent number: 4212865
    Abstract: 2-Nitro-3-phenylbenzofurans wherein the benzo or 3-phenyl portion of the molecule is bonded directly to an optionally substituted amino group, which are active as antimicrobial agents and processes for their use.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: July 15, 1980
    Assignee: Riker Laboratories, Inc.
    Inventors: Robert A. Scherrer, Richard M. Stern, Vernon R. Fletcher
  • Certain 3-bromomethylphenyl-2-bromo-benzofurans
    Patent number: 4208336
    Abstract: Optionally substituted (2-nitro-3-benzofuranyl)phenylacetic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: June 17, 1980
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Acidic 3-phenylbenzofurans
    Patent number: 4208335
    Abstract: Acidic 2-nitro-3-phenylbenzofurans and their pharmaceutically acceptable salts which are active as antimicrobial agents, processes for their use and intermediates therefor are described.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: June 17, 1980
    Assignee: Riker Laboratories, Inc.
    Inventors: Robert A. Scherrer, Walton J. Hammar, Richard M. Stern
  • 5,6-Methylenedioxy-2-nitro-3-phenylbenzofurans
    Patent number: 4174403
    Abstract: 5,6-Methylenedioxy-2-nitro-3-phenylbenzofurans, optionally substituted on the 3-phenyl group, which are active as antimicrobial agents, processes for their use and intermediates therefor.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: November 13, 1979
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • 3-Naphthyl-2-nitrobenzofurans
    Patent number: 4154848
    Abstract: 2-Nitrobenzofurans in which the furan ring is either fused to or substituted by a fused bicyclic system, which are active as antimicrobial agents, processes for their use and intermediates therefor are described.
    Type: Grant
    Filed: September 19, 1978
    Date of Patent: May 15, 1979
    Assignee: Riker Laboratories, Inc.
    Inventors: Robert A. Scherrer, Richard M. Stern
  • Derivatives of 2-nitro-3-phenylbenzofurancarboxaldehydes
    Patent number: 4154847
    Abstract: Reaction products of 2-nitro-3-phenylbenzofurancarboxaldehydes with hydroxylamine, semicarbazide and benzoylhydrazine which are active as antimicrobial agents and processes for their use.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: May 15, 1979
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Intermediates for 2-nitro-3-phenylbenzofuran alkan(and-en)oic acids
    Patent number: 4153619
    Abstract: Optionally substituted 2-nitro-3-phenylbenzofuran-alkanoic and -alkenoic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: May 8, 1979
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Oxy, thio, sulfenyl and sulfonyl derivatives of 2-nitro-3-phenylbenzofuran
    Patent number: 4153716
    Abstract: Compounds wherein 2-nitro-3-phenylbenzofuran is substituted by one or two alcohol or thioalcohol-containing functional groups, or derivatives thereof, are active as antimicrobial agents.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: May 8, 1979
    Assignee: Riker Laboratories, Inc.
    Inventors: Robert A. Scherrer, Walton J. Hammar, Richard M. Stern
  • Anti-microbial 2-nitro-3-phenyl benzofurans substituted by carboxy containing group
    Patent number: 4143154
    Abstract: Acidic 2-nitro-3-phenylbenzofurans and their pharmaceutically acceptable salts which are active as antimicrobial agents, processes for their use and intermediates therefor are described.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: March 6, 1979
    Assignee: Riker Laboratories, Inc.
    Inventors: Robert A. Scherrer, Walton J. Hammar, Richard M. Stern
  • Anti-microbial alkyl substituted-2-nitro-3-phenylbenzofurans
    Patent number: 4141990
    Abstract: Methyl-substituted-2-nitro-3-phenylbenzofurans are prepared from methyl-substituted-3-phenylbenzofurans and are found to be useful antimicrobial agents.
    Type: Grant
    Filed: February 26, 1974
    Date of Patent: February 27, 1979
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Antimicrobial polycyclic nitrofurans
    Patent number: 4128659
    Abstract: 2-Nitrobenzofurans in which the furan ring is either fused to or substituted by a fused bicyclic system, which are active as antimicrobial agents, processes for their use and intermediates therefor are described.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: December 5, 1978
    Assignee: Riker Laboratories, Inc.
    Inventors: Robert A. Scherrer, Richard M. Stern
  • 2-Nitro-3-phenylbenzofuran alkanoic (or propenoic) acids
    Patent number: 4124704
    Abstract: Optionally substituted 2-nitro-3-phenylbenzofuranalkanoic and -alkenoic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: November 7, 1978
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Optionally sunbstituted 3-(cyanophenyl)benzofurans
    Patent number: 4124602
    Abstract: Optionally substituted (2-nitro-3-benzofuranyl)benzoic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: November 7, 1978
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • 2-Nitro or 2-bromo-(3-cyanomethylphenyl)benzofurans
    Patent number: 4124605
    Abstract: Optionally substituted (2-nitro-3-benzofuranyl)-phenylacetic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: November 7, 1978
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • 4-(OR 5 OR 6 OR 7)CYANO-2-NITRO-3-PHENYLBENZOFURANS
    Patent number: 4124603
    Abstract: Optionally substituted 2-nitro-3-phenylbenzofuran-carboxylic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: November 7, 1978
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Antimicrobial 2-nitro-3-phenylbenzofurancarboxylic acids
    Patent number: 4067993
    Abstract: Optionally substituted 2-nitro-3-phenylbenzofurancarboxylic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: January 10, 1978
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Antimicrobial (2-nitro-3-benzofuranyl)phenylacetic acids
    Patent number: 4066782
    Abstract: Optionally substituted (2-nitro-3-benzofuranyl)phenylacetic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: January 3, 1978
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Antimicrobial (2-nitro-3-benzofuranyl)-benzoic acids
    Patent number: 4048323
    Abstract: Optionally substituted (2-nitro-3-benzofuranyl)-benzoic acids which are active as antimicrobial agents, processes for their preparation and intermediates therefor are described.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: September 13, 1977
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Use of certain 2-nitro-3-phenyl-alkoxybenzofurans in inhibiting growth of microorganisms and intermediates in the synthesis of said benzofurans
    Patent number: 4022908
    Abstract: Certain alkoxy-substituted-2-nitro-3-phenylbenzofurans are prepared by the exchange reaction of 2-halo-3-phenylbenzofurans with nitrating agents and are found to be useful antimicrobial agents.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: May 10, 1977
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer
  • Certain 3-phenyl-benzofuran lower alkanoic acids and esters thereof
    Patent number: 4013692
    Abstract: Benzofurans and 2,3-dihydrobenzofurans optionally substituted at the 2 position by halogen or lower alkyl, substituted at the 3 position by optionally substituted phenyl, substituted on the benzo ring by a lower alkanoic acid group or a salt, ester or amide thereof, optionally substituted on the carbon of said lower alkanoic group bonded to the benzo ring, and optionally substituted on the benzo ring, are active anti-inflammatory, anti-pyretic and analgesic agents or are intermediates in the preparation of such agents.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: March 22, 1977
    Assignee: Riker Laboratories, Inc.
    Inventor: Robert A. Scherrer