Patents by Inventor Robert P. Williams

Robert P. Williams 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).

  • Process of synthesis of a tricyclic ketone intermediate
    Patent number: 6608202
    Abstract: In one embodiment, the present invention describes the synthesis of a compound of Formula III, wherein X is halogen, and intermediates therefor from easily available starting materials by a simple route.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: August 19, 2003
    Assignee: Schering Corporation
    Inventors: Henry J. Doran, Pat M. O'Neill, Robert P. Williams
  • PROCESS OF SYNTHESIS OF A TRICYCLIC KETONE INTERMEDIATE
    Publication number: 20030144314
    Abstract: In one embodiment, the present invention describes the synthesis of a compound of Formula III, wherein X is halogen, 1
    Type: Application
    Filed: August 20, 2002
    Publication date: July 31, 2003
    Applicant: Schering Corporation
    Inventors: Henry J. Doran, Pat M. O'Neill, Robert P. Williams
  • Synthesis of intermediates useful in preparing tricyclic compounds
    Patent number: 6495689
    Abstract: Disclosed is a process for preparing a compound having the formula: wherein R, R1, R2, R3, and R4 are independently selected from the group consisting of H, Br, Cl, F, alkyl, or alkoxy.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: December 17, 2002
    Assignee: Schering Corporation
    Inventors: Charles F. Bernard, Michael Casey, Frank Xing Chen, Denise C. Grogan, Marc Poirier, Robert P. Williams, Yee-Shing Wong, George G. Wu
  • Synthesis of intermediates useful in preparing tricyclic compounds
    Publication number: 20020077331
    Abstract: Disclosed is a process for preparing a compound having the formula: 1
    Type: Application
    Filed: June 21, 2001
    Publication date: June 20, 2002
    Inventors: Charles F. Bernard, Michael Casey, Frank Xing Chen, Denise C. Grogan, Marc Poirier, Robert P. Williams, Yee-Shing Wong, George G. Wu
  • Synthesis of intermediates useful in preparing tricyclic compounds
    Patent number: 6372909
    Abstract: Disclosed is a process for preparing a compound having the formula: wherein R, R1, R2, R3, and R4 are independently selected from the group consisting of H, Br, Cl, F, alkyl, or alkoxy, by (A) reacting a compound having the formula  wherein RA, RC, RD, and RE are independently selected from the group consisting of H, halo, alkyl, or alkoxy, and R5 is aryl or heteroaryl, with a dehydrating agent to produce an imine having the formula: (B) hydrolyzing the imine produced in step (A) to produce the compound having formula (I). Also disclosed are novel intermediates having the formula:  wherein RA, RB, RC, RD, and RE are independently selected from the group consisting of H, halo, alkyl, or alkoxy, and R5 is aryl or heteroaryl.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: April 16, 2002
    Assignee: Schering Corporation
    Inventors: Charles F. Bernard, Michael Casey, Frank Xing Chen, Denise C. Grogan, Marc Poirier, Robert P. Williams, Yee-Shing Wong, George G. Wu
  • Closure assembly for liquid container
    Patent number: D261236
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: October 13, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Robert P. Williams