Patents Assigned to GelTex Pharmaceuticals, Inc.
  • Patent number: 5925379
    Abstract: The present invention relates to a method for removing bile salts from a patient, comprising the step of administering to the patient a therapeutically effective amount of a polymer network composition comprising a cationic polymer. In one embodiment, the polymer network is an interpenetrating polymer network. In another embodiment, the polymer network is a semi-interpenetrating polymer network.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: July 20, 1999
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley, Thomas X. Neenan, George M. Whitesides
  • Patent number: 5919832
    Abstract: An amine polymer includes first and second substituents bound to amines of the polymer. The first substituent includes a hydrophobic moiety. The second substituent includes a quaternary amine-containing 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: January 7, 1997
    Date of Patent: July 6, 1999
    Assignee: Geltex Pharmaceuticals Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley
  • Patent number: 5917007
    Abstract: The invention relates to a method for removing bile salts from a patient in need thereof and compositions useful in the method. The method comprises administering to the patient a therapeutically effective amount of an alkylated and crosslinked polymer. The alkylated and crosslinked polymer comprises the reaction product of polymers, or salts and copolymers thereof having amine containing repeat units, with at least one aliphatic alkylating agent and a crosslinking agent.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: June 29, 1999
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley
  • 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: 5840766
    Abstract: A method for removing bile salts from a patient by ion exchange by administering to the patient a therapeutically effective amount of one or more highly crosslinked polymers characterized by a repeat unit having the formula ##STR1## or copolymer thereof, where n is an integer; R.sup.1 is H or a C.sub.1 -C.sub.8 alkyl group: M is ##STR2## Z is O, NR.sup.3, S, or (CH.sub.2).sub.m ; m=0-10; R.sup.3 is H or a C.sub.1 -C.sub.8 alkyl group; and R.sup.2 is ##STR3## where p=0-10, and each R.sup.4, R.sup.5, and R.sup.6, independently, is H, a C.sub.1 -C.sub.8 alkyl group, or an aryl group.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: November 24, 1998
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley
  • Patent number: 5821312
    Abstract: The present invention includes polymerizable monomers comprising an acid-functionalized glycoside moiety. The monomer can have a polymerizable functional group, such as an olefinic bond, to which the acid-functionalized glycoside 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 pendant acid-functionalized glycoside moieties. The present invention also provides a method for treating a microbial infection in a mammal by administering to the mammal a therapeutically effective amount of a polymer comprising one or more acid-functionalized glycoside moieties.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: October 13, 1998
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Venkata R. Garigapati
  • Patent number: 5703188
    Abstract: A method for removing bile salts from a patient by ion exchange by administering to the patient a therapeutically effective amount of one or more highly crosslinked polymers characterized by a repeat unit having the formula ##STR1## or copolymer thereof, where n is an integer; R.sup.1 is H or a C.sub.1 -C.sub.8 alkyl group: M is ##STR2## Z is O, NR.sup.3, S, or (CH.sub.2).sub.m ; m=0-10; R.sup.3 is H or a C.sub.1 -C.sub.8 alkyl group; and R.sup.2 is ##STR3## where p=0-10, and each R.sup.4, R.sup.5, and R.sup.6, independently is H, a C.sub.1 -C.sub.8 alkyl group, or an aryl group.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 30, 1997
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley
  • Patent number: 5700458
    Abstract: The present invention includes polymerizable monomers comprising an acid-functionalized glycoside moiety. In one embodiment, the monomer has a polymerizable functional group, such as an olefinic bond, to which the acid-functionalized glycoside 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 acid-functionalized glycoside moieties, such as pendant acid-functionalized glycoside 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: December 23, 1997
    Assignee: GelTex Pharmaceuticals Inc.
    Inventors: W. Harry Mandeville, III, Venkata R. Garigapati
  • Patent number: 5693675
    Abstract: The invention relates to alkylated amine polymers and a method for removing bile salts from a patient that includes administering to the patient a therapeutically effective amount of product produced by a process comprising alkylating one or more crosslinked amine polymers, salts or copolymers thereof with at least one alkylating agent. The reaction product is characterized in that: (i) at least some of the nitrogen atoms are unreacted with alkylating agent; and (ii) less than 10 mol % of the nitrogen atoms in the polymer react with the alkylating agent to form quaternary ammonium units.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 2, 1997
    Assignee: GelTex Pharmaceuticals Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley
  • Patent number: 5679717
    Abstract: A method for removing bile salts from a patient that includes administering to the patient a therapeutically effective amount of product produced by a process comprising alkylating one or more crosslinked amine polymers, salts or copolymers thereof with at least one alkylating agent. The reaction product is characterized in that: (i) at least some of the nitrogen atoms are unreacted with alkylating agent; and (ii) less than 10 mol% of the nitrogen atoms in the polymer react with the alkylating agent to form quaternary ammonium units.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: October 21, 1997
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen Randall Holmes-Farley
  • Patent number: 5667775
    Abstract: Phosphate-binding polymers are provided for removing phosphate from the gastrointestinal tract. The polymers are orally administered, and are useful for the treatment of hyperphosphatemia.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 16, 1997
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Stephen Randall Holmes-Farley, W. Harry Mandeville, III, George M. Whitesides
  • Patent number: 5624963
    Abstract: A method for removing bile salts from a patient by ion exchange by administering to the patient a therapeutically effective amount of one or more highly crosslinked polymers characterized by a repeat unit having the formula ##STR1## or copolymer thereof, where n is an integer; R.sup.1 is H or a C.sub.1 -C.sub.8 alkyl group; M is ##STR2## or --Z--R.sup.2 ; Z is O, NR.sup.3, S, or (CH.sub.2).sub.m ; m=0-10; R.sup.3 is H or a C.sub.1 -C.sub.8 alkyl group; and R.sup.2 is ##STR3## where p=0-10, and each R.sup.4, R.sup.5, and R.sup.6, independently, is H, a C.sub.1 -C.sub.8 alkyl group, or an aryl group, the polymers being non-toxic and stable once ingested.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: April 29, 1997
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen R. Holmes-Farley
  • 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: 5607669
    Abstract: An amine polymer includes first and second substituents bound to amines of the polymer. The first substituent includes a hydrophobic moiety. The second substituent includes a quaternary amine-containing 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: March 4, 1997
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: W. Harry Mandeville, III, Stephen R. Holmes-Farley
  • Patent number: 5496545
    Abstract: Phosphate-binding polymers are provided for removing phosphate from the gastrointestinal tract. The polymers are orally administered, and are useful for the treatment of hyperphosphatemia.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: March 5, 1996
    Assignee: GelTex Pharmaceuticals, Inc.
    Inventors: Stephen R. Holmes-Farley, W. Harry Mandeville, III, George M. Whitesides