Patents by Inventor John S. Petersen

John S. Petersen 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: 6264938
    Abstract: The invention relates to methods for treating hypercholesterolemia and atherosclerosis, and reducing serum cholesterol in a mammal. The methods of the invention comprise administering to a mammal a first amount of a bile acid sequestrant compound which is an unsubstituted polydiallylamine polymer and a second amount of an HMG Co-A reductase inhibitor compound. The first and second amounts together comprise a therapeutically effective amount. The invention further relates to pharmaceutical compositions useful for the treatment of hypercholesterolemia and atherosclerosis, and for reducing serum cholesterol. The pharmaceutical compositions comprise a combination of a first amount of an unsubstituted polydiallylamine polymer compound and a second amount of an HMG Co-A reductase inhibitor compound. The first and second amounts comprise a therapeutically effective amount. The pharmaceutical compositions of the present invention may optionally contain a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: July 24, 2001
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Chad Cori Huval, Stephen Randall Holmes-Farley, John S. Petersen, Pradeep K. Dhal
  • Patent number: 6248318
    Abstract: A method for treating hypercholesterolemia in a patient that includes administering to the patient a therapeutically effective amount of a polydiallylamine polymer.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: June 19, 2001
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Chad Cori Huval, Stephen Randall Holmes-Farley, John S. Petersen, Pradeep K. Dhal
  • Patent number: 6203785
    Abstract: The present invention relates to a method for removing bile acids from a patient and certain polymers of use in the method. The method comprises the step of administering to the patient a therapeutically effective amount of a polymer composition which includes a a poly(diallylamine) polymer which is substituted with hydrophobic groups. The hydrophobic groups can be a substituted or unsubstituted, straight chain or branched C3-C24-alkyl group, an aralkyl group or an aryl group.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: March 20, 2001
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Stephen Randall Holmes-Farley, Pradeep K. Dhal, John S. Petersen
  • Patent number: 6187762
    Abstract: The present invention includes polymerizable monomers comprising a fucoside moiety. In one embodiment, the monomer has a polymerizable functional group, such as an olefinic bond, to which the fucoside moiety is attached by a spacer group, for example, an alkylene group, or an alkylene group wherein one or more carbon atoms are substituted by heteroatoms, such as oxygen, nitrogen or sulfur atoms. The present invention also includes polymers comprising one or more fucoside moieties, such as pendant fucoside moieties, which can inhibit or prevent rotavirus infection in a mammal. Such a polymer can comprise, for example, a monomer of the present invention. The polymer can be a homopolymer or a copolymer, and can have, for example, a polyacrylamide, polyacrylate or polystyrene backbone.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: February 13, 2001
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, John S. Petersen, Venkata R. Garigapati, Thomas X. Neenan
  • Patent number: 6090250
    Abstract: Chiral surfactants, methods for their synthesis and use, and apparatus designed to facilitate chiral separations using nucellar capillary electrophoresis is disclosed. A chiral surfactant having the general formula: ##STR1## is described, R1 is the hydrophobic tail, Y-A-X is the linker, the brackets define a chiral center, and the hydrophilic head group is Z. All the various components may potentiate the enantioselectivity of the chiral surfactant. The capillary electrophoresis (CE) system includes a narrow diameter capillary, a high voltage power supply, an electrolyte reservoir at each end of the capillary, a means for injecting a sample, and a detector. Chiral surfactants are dissolved in the electrolyte above their critical micelle concentration (cmc), resulting in the formation of chiral micelles. The electrolyte reservoirs and capillary tube are filled with the electrolyte.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: July 18, 2000
    Assignee: Waters Investments Limited
    Inventors: Jeffrey R. Mazzeo, Edward R. Grover, Michael E. Swartz, Michael Merion, John S. Petersen
  • Patent number: 6083497
    Abstract: A method for removing bile salts from a patient that includes administering to the patient a therapeutically effective amount of a non-absorbable polydiallylamine polymers.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 4, 2000
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Chad Cori Huval, Stephen Randall Holmes-Farley, John S. Petersen, Pradeep K. Dhal
  • Patent number: 5969090
    Abstract: The present invention relates to a poly(allylamine) polymer and, more generally, a hydrocarbon amine polymer. Preferably, these polymers are crosslinked. The present invention also relates to methods of forming these polymers and methods for their use. Further, the present invention relates to alkylating agents that can be employed to form the polymers and to methods for forming the alkylating agents. Generally, the polymer sequestrant includes a substituent bound to an amine of the polymer. The substituent includes a quaternary amine-containing moiety having one, two or three terminal hydrophobic substituents. A method of preparing quaternary amine-containing alkylating agents includes reacting an unsymmetrical dihalide with a tertiary amine having at least one hydrophobic substituent. A method for binding bile salts of bile acids in a mammal includes orally administering to the mammal a therapeutically-effective amount of the polymer sequestrant.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: October 19, 1999
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley, John S. Petersen
  • Patent number: 5929184
    Abstract: The present invention relates to polymer compositions and methods of using said compositions for sequestering bile acids in a patient. The polymer compositions of this invention comprise a copolymer characterized by one or more hydrophilic nonamine-containing monomers or repeat units and one or more amine-containing monomers or repeat units. The amine-containing monomers or repeat units of the polymer compositions have one or more substituents bound to a portion of the amine nitrogens. The substituent or substituents which are bound to the amine nitrogens of the polymer composition can include a hydrophobic moiety and/or a quaternary amine-containing moiety. Suitable amine-containing monomers or repeat units include, but are not limited to, for example, vinylamine, allylamine, diallylamine, diallylmethylamine, and ethyleneimine, which are appropriately substituted, as described above.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: July 27, 1999
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Stephen Randall Holmes-Farley, John S. Petersen
  • Patent number: 5900475
    Abstract: The present invention relates to a poly(allylamine) polymer and, more generally, a hydrocarbon amine polymer. Preferably, these polymers are crosslinked. The present invention also relates to methods of forming these polymers and methods for their use. Further, the present invention relates to alkylating agents that can be employed to form the polymers and to methods for forming the alkylating agents Generally, the polymer sequestrant includes a substituent bound to an amine of the polymer. The substituent includes a quaternary amine-containing moiety having one, two or three terminal hydrophobic substituents. A method of preparing quaternary amine-containing alkylating agents includes reacting an unsymmetrical dihalide with a tertiary amine having at least one hydrophobic substituent. A method for binding bile salts of bile acids in a mammal includes orally administering to the mammal a therapeutically-effective amount of the polymer sequestrant.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: May 4, 1999
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley, John S. Petersen
  • Patent number: 5891862
    Abstract: The present invention includes polymerizable monomers comprising a fucoside moiety. In one embodiment, the monomer has a polymerizable functional group, such as an olefinic bond, to which the fucoside moiety is attached by a spacer group, for example, an alkylene group, or an alkylene group wherein one or more carbon atoms are substituted by heteroatoms, such as oxygen, nitrogen or sulfur atoms. The present invention also includes polymers comprising one or more fucoside moieties, such as pendant fucoside moieties, which can inhibit or prevent rotavirus infection in a mammal. Such a polymer can comprise, for example, a monomer of the present invention. The polymer can be a homopolymer or a copolymer, and can have, for example, a polyacrylamide, polyacrylate or polystyrene backbone.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: April 6, 1999
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, John S. Petersen, Venkata R. Garigapati, Thomas X. Neenan
  • Patent number: 5635333
    Abstract: Reduction of reflection from an integrated circuit substrate during exposure of a photoresist layer on a surface such as an integrated circuit wafer is minimized by incorporating an antireflective coating between the photoresist layer and the integrated circuit substrate. The antireflective layer, after exposure and development of the photoresist layer, is preferably removed by exposing the non-masked antireflective layer to activating radiation while heating the coating to induce a solubilizing reaction in an antireflective coating and a curing reaction in an overlying photoresist mask. Thereafter, the exposed portions of the antireflective layer are removed by treatment with a suitable developer.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: June 3, 1997
    Assignees: Shipley Company, L.L.C., Sematech, Inc.
    Inventors: John S. Petersen, Kim R. Dean, Daniel A. Miller
  • Patent number: 5618530
    Abstract: An amine polymer includes a substituent bound to an amine of the polymer. The substituent includes a quaternary amine-containing moiety having at least one hydrophobic moiety. A method for binding bile salts of bile acids in a mammal includes orally administering to the mammal a therapeutically-effective amount of the amine polymer.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 8, 1997
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen R. Holmes-Farley, John S. Petersen
  • Patent number: 5374755
    Abstract: Novel carbamate compounds, novel silylcarbamate compounds and novel reversed phase materials comprising a silica substrate modified with a modified novel silylcarbamate compound are disclosed which may, for example, be used as stationary phases for liquid chromatography applications. Attached to the carbamate group are several reversed or normal phase producing groups such as cyanoalkyl, tertiary butyl, dibutyl, octyl, dodecyl, tetradecyl, octadecyl or benzyl. The new stationary phases may be endcapped with a short chain alkyl silane. One particular advantage of these stationary phases is decreased interaction with basic samples due to shielding of the unreacted silanol groups on the silica surface. The new phases are particularly useful in the chromatographic analysis of basic samples or more generally for samples having an undesirable interaction with the unmodified silanols.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: December 20, 1994
    Assignee: Millipore Corporation
    Inventors: Uwe D. Neue, Carsten L. Niederlaender, John S. Petersen
  • Patent number: 5192405
    Abstract: Capillary electrophoresis is effected by introducing into a capillary a buffer solution a zwitterion composition comprised of substantially equal numbers of positive and negative charges when the negative charges are desired from sulfonate or sulfate groups and the positive charges are derived from quaternary amines, quaternary phosphines or quanternary arsines. A sample is introduced into the capillary and an electric field is established through the capillary to cause the sample to migrate through the capillary.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: March 9, 1993
    Assignee: Millipore Corporation
    Inventors: John S. Petersen, Michael Merion