Patents Assigned to ZS Pharma, Inc.
  • Patent number: 11738044
    Abstract: The present invention relates to zirconium silicate compositions having a lead content that is below 0.6 ppm and methods of manufacturing zirconium silicate at reactor volumes exceeding 200-L with a lead content below 1.1 ppm. The lead content of the zirconium silicate of this invention are within the levels that are considered acceptable for extended use given the dose requirements for zirconium silicate.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: August 29, 2023
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 11406662
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: August 9, 2022
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 10695365
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of ZS-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: June 30, 2020
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 10695366
    Abstract: The present invention relates to novel methods of using microporous zirconium silicate to reduce the risk of hyperkalemia and to lower aldosterone levels in the treatment of chronic kidney disease and/or chronic heart disease with therapies comprising diuretics. The invention provides a safe way to reduce the risk of hyperkalemia and to lower aldosterone. The invention also relates to treatment of other conditions that can occur either alone or in connection with hyperkalemia, chronic kidney disease, and/or chronic heart disease.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 30, 2020
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 10413569
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: September 17, 2019
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 10398730
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: September 3, 2019
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 10335432
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: July 2, 2019
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem, Jeff Gilmore
  • Patent number: 10300087
    Abstract: The present invention relates to zirconium silicate compositions having a lead content that is below 0.6 ppm and methods of manufacturing zirconium silicate at reactor volumes exceeding 200-L with a lead content below 1.1 ppm. The lead content of the zirconium silicate of this invention are within the levels that are considered acceptable for extended use given the dose requirements for zirconium silicate.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 28, 2019
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9943637
    Abstract: The present invention relates to novel microporous zirconium silicate compositions having a desired particle size distribution and methods of making those compositions. These compositions have an ideal particle size distribution for use ex vivo, for example in a dialysis exchange cartridge, yet retain many of the desirable properties of prior improved absorbers including high cation exchange capacity. Further, the new zirconium silicate molecular sieve absorbers can be manufactured using a technique that achieves the desired particle size distribution while eliminating the screening step that was previously necessary.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 17, 2018
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9913860
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of ZS-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: March 13, 2018
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9861658
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: January 9, 2018
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9844567
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: December 19, 2017
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9707255
    Abstract: The present invention relates to novel calcium-containing microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without removing calcium from the patient's body. Also disclosed are methods of using calcium-free or low calcium microporous zirconium silicate compositions for the treatment of hyperkalemia in patients also suffering from hypercalcemia.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: July 18, 2017
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9662352
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: May 30, 2017
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9592253
    Abstract: The present invention relates to zirconium silicate compositions having a lead content that is below 0.6 ppm and methods of manufacturing zirconium silicate at reactor volumes exceeding 200-L with a lead content below 1.1 ppm. The lead content of the zirconium silicate of this invention are within the levels that are considered acceptable for extended use given the dose requirements for zirconium silicate.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: March 14, 2017
    Assignee: ZS PHARMA, INC.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 9457050
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: October 4, 2016
    Assignee: ZS Pharma, Inc.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem, Jeff Gilmore
  • Patent number: 8877255
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of ZS-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: November 4, 2014
    Assignee: ZS Pharma, Inc.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Publication number: 20140302175
    Abstract: The present invention relates to novel methods of using microporous zirconium silicate to reduce the risk of hyperkalemia and to lower aldosterone levels in the treatment of chronic kidney disease and/or chronic heart disease with therapies comprising diuretics. The invention provides a safe way to reduce the risk of hyperkalemia and to lower aldosterone. The invention also relates to treatment of other conditions that can occur either alone or in connection with hyperkalemia, chronic kidney disease, and/or chronic heart disease.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 9, 2014
    Applicant: ZS Pharma, Inc.
    Inventors: Donald Jeffrey KEYSER, Alvaro F. GUILLEM
  • Patent number: 8808750
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: August 19, 2014
    Assignee: ZS Pharma, Inc.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem
  • Patent number: 8802152
    Abstract: The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of UZSi-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: August 12, 2014
    Assignee: ZS Pharma, Inc.
    Inventors: Donald Jeffrey Keyser, Alvaro F. Guillem