Patents by Inventor Kong Luk

Kong Luk 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).

  • Antibacterial compounds
    Patent number: 4465689
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: August 14, 1984
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Process for the preparation of .beta.-lactam antibiotics
    Patent number: 4446069
    Abstract: The present invention provides a process for the preparation of a fused bicyclic .beta.-lactam containing compound having an optionally salified free carboxylic acid group which process comprises the reaction of an ester of the formula (I): ##STR1## with halide ion; wherein R is the residue of the fused bicyclic .beta.-lactam containing compound, R.sup.1 is an alkyl group of 1-6 carbon atoms optionally substituted by an alkoxy group of 1-4 carbon atoms or is an optionally substituted phenyl group or an alkyl group of 1-4 carbon atoms substituted by an optionally substituted phenyl group; and R.sup.2 is a hydrogen atom or an alkyl group of 1-4 carbon atoms or is joined to R.sup.2 to form part of a 5- or 6- membered carbocyclic or heterocyclic ring.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: May 1, 1984
    Assignee: Beecham Group Limited of Beecham House
    Inventor: Kong Luk
  • 13-Oxo-monic acid esters useful as antibacterial and antimycoplasmal agents
    Patent number: 4374147
    Abstract: Compounds of formula (II): ##STR1## in which R represents a pharmaceutically acceptable ester-forming radical have antibacterial and antimycoplasmal activity. These compounds are produced by photo-oxidation of the corresponding 13-hydroxy compounds, optionally after having protected the glycol moiety.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: February 15, 1983
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4318856
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: March 9, 1982
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4289779
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: September 15, 1981
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4283412
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: August 11, 1981
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4283411
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: August 11, 1981
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4267316
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: May 12, 1981
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4256762
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: March 17, 1981
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Esters of monic and isomonic acids
    Patent number: 4256879
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: March 17, 1981
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4237161
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: December 2, 1980
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4235784
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: November 25, 1980
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4217448
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: August 12, 1980
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial compounds
    Patent number: 4217447
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: August 12, 1980
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Antibacterial agents 5R, 2S-hydroxymethyl-3Z (2-hydroxy- or 2-alkoxyethylidene-1-aza-4-oxabicyclo[3,2,0]heptanone
    Patent number: 4187228
    Abstract: Compounds of the formula (II): ##STR1## wherein R is hydrogen, is useful for its antibacterial activity and as a synergist for penicillins and cephalosporins.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: February 5, 1980
    Assignee: Beecham Group Limited
    Inventor: Kong Luk
  • Antibacterial compounds
    Patent number: 4166863
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: September 4, 1979
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Ketones
    Patent number: 4152337
    Abstract: A novel acid of formula: ##STR1## which is termed "monic acid" and is prepared from pseudomonic acid, is a useful intermediate for the preparation of esters thereof.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: May 1, 1979
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John P. Clayton, Norman H. Rogers
  • Intermediates for the preparation of antibacterial compounds
    Patent number: 4102904
    Abstract: A novel acid of formula: ##STR1## which is termed "monic acid" and is prepared from pseudomonic acid, is a useful intermediate for the preparation of esters thereof.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: July 25, 1978
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John Peter Clayton, Norman Harold Rogers
  • Antibacterial compounds
    Patent number: 4102901
    Abstract: Esters of an acid of formula: ##STR1## which is termed "monic acid" have activity against Gram-positive and Gram-negative organisms.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: July 25, 1978
    Assignee: Beecham Group Limited
    Inventors: Kong Luk, John Peter Clayton, Norman Harold Rogers