Patents by Inventor John L. Tucker

John L. Tucker 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 and ester derivatives useful for preparation of cephalosporins
    Publication number: 20040267008
    Abstract: This invention relates a process for preparing a compound of formula (I) 1
    Type: Application
    Filed: February 17, 2004
    Publication date: December 30, 2004
    Applicant: Pfizer Inc
    Inventors: Juan C. Colberg, John L. Tucker, Maurizio Zenoni, Giovanni Fogliato, Alessandro Donadelli, Isao Nagakura, Hiromasa Morita, Hideyuki Matsuo
  • Process for preparing 4?-substituted-9-deoxo-9a-aza-9a-homoerythromycin a derivatives
    Patent number: 6825327
    Abstract: The invention relates to processes for preparing compounds of formula 1 wherein R3 is as defined herein, and to pharmaceutically acceptable salts thereof, as well as intermediates useful in such processes. The compounds of formula 1 are antibacterial agents that may be used to treat various bacterial and protozoa infections. The invention also relates to pharmaceutical compositions containing compounds prepared by the processes of the invention and to methods of treating bacterial protozoa infections by administering such compounds.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 30, 2004
    Assignee: Pfizer Inc.
    Inventors: Constantine Sklavounos, John L. Tucker, Lulin Wei, Kerry P. Mahon, Philip Hammen, Joanna T. Negri, Richard S. Lehner
  • Fabric with floating yarn having internal connecting elements
    Publication number: 20040116020
    Abstract: A woven fabric having yarns which float, and fibers of the yarns which form connecting elements of the main bodies of yarns interlaced in the second direction of the fabric.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Inventors: William O. Boyd, John L. Tucker
  • Composite fabrics with internal connecting elements
    Publication number: 20040097152
    Abstract: A composite fabric formed of a double cloth of jersey knit material which is needled to produce internal connections of filaments and/or fibers from yarns extending into, and/or between, the yarns of an adjacent layer.
    Type: Application
    Filed: November 15, 2002
    Publication date: May 20, 2004
    Inventors: William O. Boyd, John L. Tucker, David M. Brown, Iain R. Taylor, Derek Sharpe
  • Process for preparing hydroxypyrrolidinyl ethylamine compounds useful as kappa agonists
    Patent number: 6624313
    Abstract: A process of preparing compounds having the formula I: or an optical isomer or racemic or optically active mixture thereof, which are useful as selective kappa-receptor agonists.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: September 23, 2003
    Assignee: Warner-Lambert Company LLC
    Inventors: Keith M. DeVries, Michel A. Couturier, Brian M. Andresen, John L. Tucker, Fumitaka Ito
  • Intermediates and processes for preparing substituted chromanol derivatives
    Publication number: 20030158428
    Abstract: The invention relates to processes for preparing a compound of the formula 1
    Type: Application
    Filed: January 30, 2002
    Publication date: August 21, 2003
    Applicant: Pfizer Inc.
    Inventors: Keith M. Devries, Stephane Caron, Philip D. Hammen, Geraldine P. Taber, John L. Tucker, Peter R. Rose, Ronald J. Post, Brian K. Raymer
  • Process for preparing 4"-substituted-9-deoxo-9a-aza-9a-homoerythromycin a derivatives
    Publication number: 20030064939
    Abstract: The invention relates to processes for preparing compounds of formula 1 1
    Type: Application
    Filed: April 25, 2002
    Publication date: April 3, 2003
    Inventors: Constantine Sklavounos, John L. Tucker, Lulin Wei, Kerry P. Mahon, Philip Hammen, Joanna T. Negri, Richard S. Lehner
  • Process for preparing hydroxypyrrolidinyl ethylamine compounds useful as kappa agonists
    Publication number: 20020161241
    Abstract: A process of preparing compounds having the formula I: 1
    Type: Application
    Filed: April 26, 2002
    Publication date: October 31, 2002
    Applicant: Pfizer Inc.
    Inventors: Keith M. DeVries, Michel A. Couturier, Brian M. Andresen, John L. Tucker, Fumitaka Ito
  • Process and ester derivatives useful for preparation of cephalosporins
    Publication number: 20020099205
    Abstract: This invention relates a process for preparing a compound of formula (I) 1
    Type: Application
    Filed: December 4, 2001
    Publication date: July 25, 2002
    Applicant: Pfizer Inc.
    Inventors: Juan C. Colberg, John L. Tucker, Maurizio Zenoni, Giovanni Fogliato, Alessandro Donadelli
  • Method of purifying carbazole ester precursors of 6-chloro-.alpha.-methyl-carbazole-2-acetic acid
    Patent number: 6013808
    Abstract: A process of purifying a (6-chloro-2-carbazolyl)methyl-malonic acid di(C.sub.1 -C.sub.6 alkyl) ester of Formula (I): ##STR1## wherein R.sub.a and R.sub.b must be the same and are selected from the group consisting of C.sub.1 -C.sub.6 alkyl; comprises phase separating one or more impurities from said carbazole ester at least once wherein the solvent used to carry out said phase separation is acetic acid. In a preferred embodiment said acetic acid is glacial acetic acid which is maintained at a temperature of from about 30.degree. to about 110.degree.0 C. and said carbazole ester is obtained in a purity of at least 99.90% by weight, so that the amount of impurities present therein is 0.10% or less by weight. In a more preferred embodiment of said process, said temperature is from about 50.degree. to about 70.degree. C., and said phase separation is carried out only once.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: January 11, 2000
    Assignee: Pfizer Inc.
    Inventors: Philip D. Hammen, Peter R. Rose, John L. Tucker, Keith M. Devries, Diane M. Rescek