Patents Represented by Attorney, Agent or Law Firm Krishna G. Banerjee
  • Patent number: 6699862
    Abstract: Novel indolyl-2-phenyl bisamidines are described which are DNA methyltransferase inhibiting agents, and pharmaceutical compositions containing them are used as antiproliferative agents for treating a disease, especially a neoplastic disease, characterized by abnormally rapid proliferation of tissue involved in said disease; said indolyl-2-phenyl bisamidines comprising a and a pharmaceutically acceptable salt thereof, wherein: R1 is hydrogen or (C1-C3)alkyl; R3, R4, R5, R8, R9, and R10 are hydrogen or (C1-C3)alkyl, or R3 and R4 may be taken together, or R8 and R9 may be taken together with the nitrogen atoms to which they are attached, to form an imidazolinyl group; R14 is —H; —NHC(═O)(CH2)mR20; —(CH2)mR20; —CH(CH3)R20; —(CH2)m(C6H3)—R17; —(CH2)m(C6H3)—R20; —(CH2)m(heterocyclyl)—R17; —(CH2)m(heterocyclyl)—R20; —CH2CH═CHR20; —(CH2)mC(═O)NH—CHR20R21; or —(CH2)mC(═O)NH—CH2&m
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: March 2, 2004
    Assignee: Pfizer Inc.
    Inventors: Steven W. Goldstein, Banauara L. Mylari, Jose R. Perez, Edward A. Glazer
  • Patent number: 6610465
    Abstract: The present invention provides a method for producing a film forming resin suitable for use in a photoresist composition, involving the following steps: (a) providing a solution of a film forming resin in a solvent; (b) providing the following two filter sheets: (i) a filter sheet containing a self-supporting fibrous matrix having immobilized therein a particulate filter aid and particulate ion exchange resin particles, where the particulate filter aid and ion exchange resin particles are distributed substantially uniformly throughout a cross-section of said matrix; and (ii) a filter sheet containing a self-supporting matrix of fibers having immobilized therein particulate filter aid and binder resin; (c) rinsing the filter sheets of step (b) with the solvent of step (a); and (d) passing the solution of the film forming resin through the rinsed filter sheets of step (c).
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: August 26, 2003
    Assignee: Clariant Finance (BVI) Limited
    Inventors: M. Dalil Rahman, Douglas McKenzie, Takanori Kudo, Munirathna Padmanaban
  • Patent number: 6608104
    Abstract: A compound of the formula wherein R1-R13, X, Z and Q are as defined above, useful in the treatment of arthritis, cancer, and other diseases involving the dysregulated production/release of reprolysins such as Aggrecanase and other diseases characterized by matrix metalloproteinase activity. In addition, the compounds of the present invention may be used in combination therapy with standard non-steroidal anti-inflammatory drugs (NSAID's), COX-2 inhibitors and analgesics, and in combination with cytotoxic drugs such as adriamycin, daunomycin, cis-platinum, etoposide, taxol, taxotere and other alkaloids, such as vincristine, in the treatment of cancer.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: August 19, 2003
    Assignee: Pfizer Inc
    Inventor: Mark C. Noe
  • Patent number: 6596735
    Abstract: The invention relates to compounds of the formula: and to pharmaceutically acceptable salts and solvates thereof wherein Y, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 have the meanings defined in the specification. The invention also relates to pharmaceutical compositions comprising said compounds and to the use of said compounds for inhibiting abnormal cell growth in mammals. The compounds of the above formula have activity as farnesyl protein transferase inhibitors.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: July 22, 2003
    Assignee: Pfizer Inc
    Inventor: Bingwei V. Yang
  • Patent number: 6586447
    Abstract: The present invention relates to compounds of formula 1 and to pharmaceutically acceptable salts, prodrugs, and solvates thereof, wherein n is 0 or 1 and R1, R2, R3, R4, and R5 are as defined herein. The above compounds of formula 1 are useful in the treatment of hyperproliferative disorders, such as cancer, in mammals. The invention also relates to pharmaceutical compositions containing the compounds of formula 1, to methods of inhibiting abnormal cell growth, including cancer, in a mammal by administering the compounds of formula 1 to a mammal requiring such treatment, and to methods of preparing compounds of formula 1.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 1, 2003
    Assignee: Pfizer Inc
    Inventors: Joseph Peter Lyssikatos, Bingwei Vera Yang
  • Patent number: 6579982
    Abstract: The present invention relates to pyrimidine-2,4,6-trione metalloproteinase inhibitors of the formula wherein X, Y, Ar1, Z, R1, R2 and R3 are as defined in the specification, and to pharmaceutical compositions and methods of treating inflammation, cancer and other disorders.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: June 17, 2003
    Assignee: Pfizer Inc.
    Inventor: Julian Blagg
  • Patent number: 6576632
    Abstract: The present invention relates to compounds of formula I and to pharmaceutically acceptable salts, hydrates and prodrugs thereof, wherein R1, R2, R3, R4, R5, R10, R11, b, m, n, p and v are as defined herein. The invention also relates to pharmaceutical compositions containing the above compounds and methods of treating hyperproliferative disorders in mammals by administering the above compounds.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: June 10, 2003
    Assignee: Pfizer Inc
    Inventors: Steven W. Goldstein, Kelly P. Longo, James F. Blake, Mohamed M. A. Awad, Kenneth P. Raiche, Kevin W. Kramer
  • Patent number: 6566550
    Abstract: This invention relates to a series of substituted aromatic ethers of the formula I wherein ring A and X and Y are defined as in the specification, that exhibit activity as glycine transport inhibitors, their pharmaceutically acceptable salts, pharmaceutical compositions containing them, and their use for the enhancement of cognition and the treatment of the positive and negative symptoms of schizophrenia and other psychoses in mammals, including humans.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: May 20, 2003
    Assignee: Pfizer Inc
    Inventor: John A. Lowe, III
  • Patent number: 6541495
    Abstract: A method of treating hyperproliferation diseases in mammals in need of such treatment, which method includes administering to said mammal a therapeutically effective amount of a compound of the formula: or a pharmaceutically acceptable salt, hydrate or prodrug thereof, wherein R1, R2, R3, R4, W, X, Y, Z and t are as defined herein.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: April 1, 2003
    Assignee: Pfizer INC
    Inventors: Steven W. Goldstein, Kelly P. Longo, Bernard Hulin
  • Patent number: 6531267
    Abstract: Disclosed is a method for producing an acid sensitive liquid composition. The method involves passing an acid sensitive liquid composition containing a carbonate represented by the formula ROC(═O)OR1 wherein R and R1 independently are a hydrocarbyl group of 1 to about 10 carbon atoms, through at least one of the following two filter sheets: (a) a filter sheet containing a self-supporting fibrous matrix having immobilized therein a particulate filter aid and a particulate ion exchange resin having an average particle size of from about 2 to about 10 microns, wherein the particulate filter aid and ion exchange resin particles are distributed substantially uniformly throughout a cross-section of said matrix; and/or (b) a filter sheet containing a self-supporting matrix of fibers having immobilized therein particulate filter aid and binder resin, and having an average pore size of about 0.05 to 0.5 &mgr;m.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: March 11, 2003
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Joseph E. Oberlander
  • Patent number: 6524775
    Abstract: An edge bead remover for a photoresist composition disposed as a film on a surface, consisting essentially of a solvent mixture comprising from about 50 to about 80 parts by weight, based on the weight of the solvent mixture, of at least one di(C1-C3)alkyl carbonate and from about 20 to about 50 parts by weight, based on the weight of the solvent mixture, of cyclopentanone. A method is also provided for treating a photoresist composition film disposed on a surface which method comprises contacting the photoresist composition with a solvent mixture, in an amount sufficient to produce a substantially uniform film thickness of the photoresist composition across the surface, wherein the solvent mixture comprises from about 50 to about 80 parts by weight, based on the weight of the solvent mixture, of at least one di(C1-C3)alkyl carbonate and from about 20 to about 50 parts by weight, based on the weight of the solvent mixture, of cyclopentanone.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: February 25, 2003
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Joseph E. Oberlander, Craig Traynor, Ernesto S. Sison, Jeff Griffin
  • Patent number: 6512087
    Abstract: Disclosed is a method for producing low molecular weight oligomers of a film forming resin, which involves: a) providing a solution of the film forming resin in a first solvent system comprising a photoresist solvent, and optionally a water-soluble organic solvent; b) providing a second solvent system comprising at least one substantially pure C5-C8 alkane and/or at least one aromatic compound having at least one hydrocarbyl substituent and/or water/C1-C4 alcohol mixture; and performing steps c)-e) in the following order: c) mixing the solutions from a) and second solvent system from b) in a static mixer for a time period sufficient for efficient mixing; d) feeding the mixture from c) and second solvent system from b) through two separate inlet ports into a liquid/liquid centrifuge, one of the inlet ports feeding the mixture from c), the second inlet port feeding the second solvent system from b) into said liquid/liquid centrifuge at a feed ratio of the mixture from c) to the second solvent system from b) of
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: January 28, 2003
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Stanley F. Wanat, M. Dalil Rahman, Zhong Xiang
  • Patent number: 6391514
    Abstract: A photosensitive positive working composition suitable for use as a photoresist, which comprises an admixture of at least one film forming resin; at least one photosensitizer; and a photoresist solvent mixture containing more than 50 weight percent of an alkylene glycol alkyl ether and less than 50 weight percent of either an alkyl alkoxy propionate or an alkyl amyl ketone, and a process for producing such a photoresist composition.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: May 21, 2002
    Assignee: Clariant Finance (BVI) Limited
    Inventors: J. Neville Eilbeck, Alberto D. Dioses
  • Patent number: 6372414
    Abstract: The present invention relates to a process for providing a pattern on a substrate for use in a metal lift-off process, the process comprising: 1) coating a substrate with a liquid positive photoresist; 2) soft baking the coated substrate; 3) contacting the substrate with an aqueous alkaline developer containing from about 0.005 volume percent to about 0.05 volume percent of an alkylene glycol alkyl ether; 4) placing a patterned mask over the substrate; 5) exposing the substrate through the mask; 6) post exposure baking the substrate; 7) optionally, flood exposing the substrate; and 8) developing the substrate with an aqueous alkaline developer. The invention also relates to a novel developer solution of an ammonium hydroxide containing from about 0.005 volume percent to about 0.5 volume percent of an alkylene glycol alkyl ether and to a process for producing such a novel developer solution.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: April 16, 2002
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Randy D. Redd, Ralph R. Dammel, John P. Sagan, Mark A. Spak
  • Patent number: 6346361
    Abstract: A method of coupling a diazonium salt with an organic polymer comprising, on order, the steps of: providing a polymer in one liquid phase; providing an diazonium salt in a separate liquid phase; contacting the separate phases, and thereby reacting the polymer and the diazonium salt.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: February 12, 2002
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Jianhui Shan, Shuji Ding, Eleazar B. Gonzalez, Dinesh N. Khanna
  • Patent number: 6297352
    Abstract: The present invention provides a method for reducing the metal ion content of a film-forming resin, said method comprising the steps of: a) providing a solution of the film-forming resin in a water-immiscible solvent system comprising at least one water-immiscible solvent; b) providing a washing solution comprising water or a dilute solution of a water-soluble metal ion chelating agent; c) feeding the solutions from a) and b) through two separate inlet ports into a liquid/liquid centrifuge, one of said inlet ports feeding solution from a), the second inlet port feeding the solution from b) into said liquid/liquid centrifuge at a feed rate ratio of the solution from a) to that from b) from about 10/90 to about 90/10, at a temperature of from about 0° C.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: October 2, 2001
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Stanley F. Wanat, M. Dalil Rahman
  • Patent number: 5925698
    Abstract: The present invention is directed to a powder coating composition containing at least one film forming resin and a non-flatting and slip-enhancing amount of at least one additive. The additive is a non-crosslinked reaction product of a hydroxy compound and a carboxylic acid where the reaction product contains at least one ester functionality and at least one straight chain hydrocarbyl group of about 10 to about 100 carbon atoms. The most preferred additive is sorbitan tristearate. The cured powder coatings exhibit lower coefficient of friction and substantial gloss retention.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: July 20, 1999
    Assignee: The Lubrizol Corporation
    Inventor: Thomas F. Steckel
  • Patent number: 5919741
    Abstract: The present invention is directed to a process for preparing a gelled overbased calcium carboxylate which involves carbonating a carboxylic acid of 8 to 30 carbon atoms in the presence of a promoter system consisting of water and an alcohol of 1 to 8 carbon atoms, such that the mole ratio of alcohol to water is substantially constant and is such that the viscosity of the reaction mixture during carbonation step does not exceed 1 pascal second (1000 centipoise). This process prevents excessive thickening of the reaction mixture in a manufacturing unit during carbonation and affords ample time to complete the process of carbonation without premature crystallization of the calcium carbonate formed during overbasing.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: July 6, 1999
    Assignee: The Lubrizol Corporation
    Inventors: Scot E. Jaynes, William R. Sweet
  • Patent number: 5912189
    Abstract: The present invention is directed to a composition containing the reaction product of:(A) a cyclic compound containing a 5, 6, or 7-member ring, the ring containing at least one nitrogen and at least one carbonyl group, at least one carbonyl group being adjacent to at least one said nitrogen;(B) an aldehyde or ketone of 1 to about 15 carbon atoms, or a reactive equivalent thereof; and(C) an etheramine represented by the formulaR.sup.4 (O(CH.sub.2 CH(R)O).sub.n --R.sup.3 --NH.sub.2).sub.y(C-I)wherein in formula (C-I), each n independently is a number from 0 to about 50; each R independently is selected from the group consisting of hydrogen, hydrocarbyl groups of 1 to about 16 carbon atoms, and mixtures thereof; R.sup.3 is selected from the group consisting of hydrocarbylene groups of about 2 to about 18 carbon atoms and groups represented by the formula ##STR1## wherein R.sup.5 and each R.sup.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: June 15, 1999
    Assignee: The Lubrizol Corporation
    Inventors: Thomas J. Wolak, Richard M. Lange
  • Patent number: 5879582
    Abstract: An electrorheological fluid of a particulate phase and a continuous phase of a hydrophobic liquid medium, a certain dispersed particulate phase, and a low molecular weight polar material exhibits a broad effective temperature range. The dispersed particulate phase comprises a polar solid material which is capable of exhibiting substantial electrorheological activity only in the presence of a low molecular weight polar material, and an organic semiconductor. The weight ratio of the polar solid material to the organic semiconductor is at least about 2:1.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: March 9, 1999
    Assignee: The Lubrizol Corporation
    Inventors: Kathleen O. Havelka, Joseph W. Pialet