Patents by Inventor Kenneth Richardson

Kenneth Richardson 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).

  • Patent number: 4885294
    Abstract: An antifungal agent of the formula: ##STR1## wherein R is phenyl group which may be substituted by 1 to 3 substituents each independently selected from halo and CF.sub.3 ; R.sup.1 is either (a) a phenyl group substituted by a group of the formula --N.dbd.CH--N(C.sub.1 -C.sub.4 alkyl).sub.2, ##STR2## or (b) a 5- or 6-membered aromatic heterocyclic group which may be benzo-fused and substituted by 1 or 2 substituents each independently selected from halo, C.sub.1 -C.sub.4 alkyl and halo-(C.sub.1 or C.sub.2 alkyl), said heterocyclic group being attached to the nitrogen atom of the piperazine ring by a carbon atom;andR.sup.2 is H or CH.sub.3 ; or an O-ester or O-ether thereof which is a C.sub.2 -C.sub.4 alkanoyl or benzoyl ester, or a C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.4 alkenyl, phenyl-(C.sub.1 -C.sub.4 alkyl) or phenyl ether, said phenyl and benzoyl groups of said O-esters and O-ethers may be substituted by one or two substituents each selected from C.sub.1 -C.sub.4 alkyl, halo and halo-(C.sub.1 or C.sub.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: December 5, 1989
    Assignee: Pfizer Inc.
    Inventors: Stephen J. Ray, Kenneth Richardson
  • Patent number: 4859686
    Abstract: 4-Aryl-3-alkoxycarbonyl-6-methyl-5-carbamyl-2-triazolylalkoxymethyl-1,4-dih yd ropyridines as anti-allergic and anti-inflammatory agents.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: August 22, 1989
    Assignee: Pfizer Inc.
    Inventors: Kelvin Cooper, John Steele, Kenneth Richardson
  • Patent number: 4853392
    Abstract: Compounds of the formula ##STR1## where R.sup.1 is lower alkyl, R.sup.2 is chlorophenyl, Y is alkylene, X is heterocyclic and Z is a fused ring are useful as antiinflammatory and antiallergy agents.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: August 1, 1989
    Assignee: Pfizer Inc.
    Inventors: Kelvin Cooper, Peter E. Cross, Michael J. Fray, Kenneth Richardson
  • Patent number: 4851412
    Abstract: Compounds of the formula: ##STR1## where R is substituted phenyl, R.sup.1 is alkyl or pyridyl, R.sup.2 is hydrogen, R.sup.3 is alkoxy, alkylamino, hydroxy or benzyloxy, Y is alkylene and X is heterocyclic as antiallergic and antiinflammatory agents.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: July 25, 1989
    Assignee: Pfizer Inc.
    Inventors: Kelvin Cooper, Michael J. Fray, Kenneth Richardson
  • Patent number: 4801598
    Abstract: Compounds of the formula: ##STR1## where R is 2-substituted phenyl said substituent being chloro, bromo, cyano, methyl, methylthio, methylsulfonyl, trifluoromethyl, hydroxy, methoxy or benzyloxy; R.sup.1 is hydrogen, lower alkyl, pyridyl, thiazolyl, isoxazolyl, thiadiazdyl or thiazdylmethyl; R.sup.2 is hydrogen or lower alkyl; R.sup.3 is hydroxy, lower alkoxy, benzyloxy, amino, lower alkylamino or morpholino; Y is alkylene having two to six carbon atoms; and X is benzimidazolyl optionally substituted by lower alkyl, chloro or trifluoromethyl.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: January 31, 1989
    Assignee: Pfizer Inc.
    Inventors: Kelvin Cooper, Michael J. Fray, Kenneth Richardson
  • Patent number: 4788205
    Abstract: Certain 4-aryl-5-carbamoyl-1,4-dihydropyridines useful in the treatment of allergic and inflammatory conditions in mammals.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: November 29, 1988
    Assignee: Pfizer Inc.
    Inventors: Kelvin Cooper, Michael J. Parry, Peter E. Cross, Kenneth Richardson
  • Patent number: 4767777
    Abstract: A triazole of the formula ##STR1## wherein R is phenyl substituted by difluoro, fluoro, dichloro or chloro and R' is phenyl substituted by chloro or fluoro are useful antifungal agents.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: August 30, 1988
    Assignee: Pfizer Inc.
    Inventors: Robert J. Bass, Kelvin Cooper, Kenneth Richardson
  • Patent number: 4727159
    Abstract: Antifungal 1-[3-(substituted)-2-hydroxy-2-(perfluoroalkyl)-propyl]triazole derivatives wherein the 3-propyl substituent represents optionally substituted phenoxy, heteroaryloxy, alkylthio, alkylsulfinyl, alkylsulfonyl or optionally substituted carbamoyl.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: February 23, 1988
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4678789
    Abstract: Compounds of the general formula: ##STR1## wherein Ar is naphthyl, biphenylyl, phenyl or substituted phenyl; n is 0, 1 or 2; and Het is a heterocyclic group which may optionally be substituted or fused to a phenyl, substituted phenyl or further heterocyclic ring; and their pharmaceutically acceptable salts are antifungal agents useful in combatting fungal infections in animals, including humans.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: July 7, 1987
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4661507
    Abstract: Compounds of the general formula: ##STR1## wherein R is naphthyl, biphenylyl, phenyl or substituted phenyl; n is 0, 1 or 2; and R.sup.1 is H, C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl, C.sub.2-4 alkanoyl, or C.sub.1-2 alkyl substituted by C.sub.2-4 alkenyl with the provisos that when R.sup.1 is H or C.sub.2-4 alkanoyl, n is 0; and when n is 2, R.sup.1 is C.sub.1-3 alkyl; and their pharmaceutically acceptable salts are antifungal agents useful in combatting fungal infections in animals, including humans.
    Type: Grant
    Filed: August 28, 1984
    Date of Patent: April 28, 1987
    Assignee: Pfizer Inc.
    Inventors: Geoffrey E. Gymer, Kenneth Richardson
  • Patent number: 4638007
    Abstract: Antifungal 1-[3-(substituted)-2-hydroxy-2-(perfluoroalkyl)-propyl]triazole derivatives wherein the 3-propyl substituent represents optionally substituted phenoxy, heteroaryloxy, alkylthio, alkylsulfinyl, alkylsulfonyl or optionally substituted carbamoyl.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: January 20, 1987
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4618616
    Abstract: 1-substituted-1-haloaryl-1-('-[1H-1,2,4-triazol-1-yl]-cyclopropyl)-2-(1H-1, 2,4-triazol-1-yl)ethane compounds and pharmaceutical compositions thereof are useful in treating fungal infections in mammals and plants.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: October 21, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Robert J. Bass, Kelvin Cooper
  • Patent number: 4616027
    Abstract: Compounds of the general formula ##STR1## or a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is 5-chloro-2-pyridyl, phenyl or phenyl substituted by from one to three substituents, each independently selected from F, Cl, Br, I, CF.sub.3, (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)alkoxy; and n is zero or an integer from 1 to 5; method for their use in combatting fungal infections in plants, seeds and animals, including humans; and pharmaceutical and agricultural compositions containing them.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: October 7, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4616026
    Abstract: Compounds of the formula ##STR1## a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is 5-chloro-2-pyridyl, phenyl or phenyl substituted by from 1 to 3 substituents, each independently selected from F, Cl, Br, I, CF.sub.3, (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)alkoxy; and R.sup.1 is H, Cl, phenyl, phenyl substituted by from 1 to 3 substituents each independently selected from F, Cl, Br, I and CF.sub.3 or a heterocyclic group linked to the adjacent CF.sub.2 group by a ring carbon atom; method for their use in combatting fungal infections in plants, seeds and animals, including humans, and pharmaceutical and agricultural compositions containing them.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: October 7, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4585778
    Abstract: Triazole antifungal agents of the formula: ##STR1## and their O-esters and O-ethers, where R is a phenyl group optionally substituted by 1 to 3 substituents each independently selected from halo, CF.sub.3, C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy;R.sup.1 is selected from (a) ##STR2## (b) --SO.sub.2 (C.sub.1 -C.sub.4 alkyl), (C) --SO.sub.2 NR.sup.2 R.sup.3 where either R.sup.2 and R.sup.3 are both C.sub.1 -C.sub.4 alkyl, or R.sup.2 and R.sup.3 together with the N atom to which they are attached represent piperidino, (d) --NHSO.sub.2 (C.sub.1 -C.sub.4 alkyl) and (e) --CONR.sup.4 R.sup.5 where either R.sup.4 is H or C.sub.1 -C.sub.4 alkyl and R.sup.5 is C.sub.1 -C.sub.4 alkyl, or R.sup.4 and R.sup.5 together with the N atom to which they are attached represent piperidino;and n is 1 or 2 with the proviso that n is 2 when R.sup.1 is --NHSO.sub.2 (C.sub.1 -C.sub.4 alkyl);and their pharmaceutically acceptable salts. The compounds are useful as human and agricultural fungicides.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: April 29, 1986
    Assignee: Pfizer Inc.
    Inventors: Geoffrey E. Gymer, Kenneth Richardson
  • Patent number: 4584307
    Abstract: A fungicidal agent of the formula: ##STR1## or a pharmaceutically or agriculturally acceptable salt thereof, wherein R is 5-chloropyrid-2-yl or a phenyl group optionally substituted by 1 to 3 substituents each independently selected from F, Cl, Br, I, CF.sub.3, C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy;and ##STR2## where n is 0, 1, 2 or 3 and R.sup.2 is H or C.sub.1 -C.sub.4 alkyl.
    Type: Grant
    Filed: July 16, 1984
    Date of Patent: April 22, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4560697
    Abstract: Compounds of the formula ##STR1## or a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is (C.sub.1 -C.sub.5) perfluoroalkyl and R.sup.1 is H or CH.sub.3, method for their use in combatting fungal infections in plants, seeds and animals, including humans; and as antileishmanial agents, and pharmaceutical and agricultural compositions containing them.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: December 24, 1985
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4554286
    Abstract: 1-Triazolyl-2-aryl-3-(5-trifluoromethylimidazol-1-yl)propan-2-ol derivatives useful in the treatment of fungal infections in humans, animals and plants, and their preparation.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: November 19, 1985
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4529799
    Abstract: Compounds of the formula ##STR1## wherein X is halo and R is an aryl group and their pharmaceutically acceptable salts are useful antifungal agents in animals, including man.
    Type: Grant
    Filed: August 2, 1983
    Date of Patent: July 16, 1985
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4518604
    Abstract: Compounds of the formula ##STR1## or a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is 5-chloro-2-pyridyl, phenyl or phenyl substituted by from 1 to 3 substituents selected from F, Cl, Br, I, CF.sub.3, (C.sub.1 -C.sub.4)-alkyl and (C.sub.1 -C.sub.4)alkoxy; X is a halogen atom, and n is zero or an integer from 1 to 5, method for their use in combatting fungal infections in plants, seeds and animals, including humans, and pharmaceutical and agricultural compositions containing them.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: May 21, 1985
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle