Patents by Inventor Howard Showalter

Howard Showalter 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).

  • 3-Aminoquinazolin-2,4-dione antibacterial agents
    Publication number: 20060287308
    Abstract: Antibacterial 3-aminoquinazolin-2,4-diones have formula (1) wherein: R1 and R3 include alkyl, alkenyl, alkynyl, cycloalkyl, aryl, heterocyclic, and heteroaryl; R5, R6, and R8 include H, alkyl, alkoxy, halo, NO2, CN, NH2, alkyl and dialkylamino; R7 includes hydrogen, alkyl, cycloalkyl, heterocyclic, fused heterocyclic, aryl and fused aryl; J and K are C or N; and pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 21, 2006
    Inventors: Paul Bird, Edmund Ellsworth, Dai Nguyen, Joseph Sanchez, Howard Showalter, Rajeshwar Singh, Michael Stier, Tuan Tran, Brian Watson, Judy Yip
  • 3-AMINOQUINAZOLIN-2,4-DIONE ANTIBACTERIAL AGENTS
    Publication number: 20060183762
    Abstract: Antibacterial 3-aminoquinazolin-2,4-diones have formula (I) wherein: R1 and R3 include alkyl, alkenyl, alkynyl, cycloalkyl, aryl, heterocyclic, and heteroaryl; R5, R6, and R8 include H, alkyl, alkoxy, halo, NO2, CN, NH2, alkyl and dialkylamino; R7 includes hydrogen, alkyl, cycloalkyl, heterocyclic, fused heterocyclic, aryl and fused aryl; J and K are C or N; and pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: December 12, 2000
    Publication date: August 17, 2006
    Inventors: Paul Bird, Edmund Ellsworth, Dai Nguyen, Joseph Sanchez, Howard Showalter, Rajeshwar Singh, Michael Stier, Tuan Tran, Brian Watson, Judy Yip