Patents by Inventor Steven O. Roczniak

Steven O. Roczniak 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).

  • POLYMER CONJUGATES OF THERAPEUTIC PEPTIDES
    Publication number: 20190070251
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: April 28, 2017
    Publication date: March 7, 2019
    Inventors: Mary J. Bossard, Steven O. Roczniak, Harold Zappe, Yujun Wang, Ping Zhang, Dawei Sheng, C. Simone Jude-Fishburn, Elizabeth Louise Minamitani, Xiaofeng Liu, Haim Moskowitz, Dennis G. Fry, Cherie F. Ali, Christine Taylor Brew
  • Polymer conjugates of protegrin peptides
    Patent number: 9763995
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: September 19, 2017
    Assignee: Nektar Therapeutics
    Inventors: Yujun Wang, Haim Moskowitz, Xiaofeng Liu, Steven O. Roczniak, Mary J. Bossard
  • Polymer conjugates of therapeutic peptides
    Patent number: 9682153
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: June 20, 2017
    Assignee: Nektar Therapeutics
    Inventors: Mary J. Bossard, Steven O. Roczniak, Harold Zappe, Yujun Wang, Ping Zhang, Dawei Sheng, C. Simone Jude-Fishburn, Elizabeth Louise Minamitani, Xiaofeng Liu, Haim Moskowitz, Dennis G. Fry, Cherie F. Ali, Christine Taylor Brew
  • POLYMER CONJUGATES OF PROTEGRIN PEPTIDES
    Publication number: 20160158311
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: August 7, 2015
    Publication date: June 9, 2016
    Inventors: Yujun Wang, Haim Moskowitz, Xiaofeng Liu, Steven O. Roczniak, Mary J. Bossard
  • POLYMER CONJUGATES OF THERAPEUTIC PEPTIDES
    Publication number: 20160022828
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: March 20, 2015
    Publication date: January 28, 2016
    Inventors: Mary J. Bossard, Steven O. Roczniak, Harold Zappe, Yujun Wang, Ping Zhang, Dawei Sheng, C. Simone Jude-Fishburn, Elizabeth Louise Minamitani, Xiaofeng Liu, Haim Moskowitz, Dennis G. Fry, Cherie F. Ali, Christine Taylor Brew
  • POLYMER CONJUGATES OF BIPHALIN PEPTIDES
    Publication number: 20120195847
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: August 2, 2012
    Applicant: Nektar Therapeutics
    Inventors: Yujun Wang, Ping Zhang, Mary J. Bossard, Steven O. Roczniak
  • POLYMER CONJUGATES OF AOD-LIKE PEPTIDES
    Publication number: 20110237524
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: September 29, 2011
    Applicant: Nektar Therapeutics
    Inventors: Cherie F. Ali, Dennis G. Fry, Mary J. Bossard, Steven O. Roczniak
  • POLYMER CONJUGATES OF OSTEOCALCIN PEPTIDES
    Publication number: 20110171166
    Abstract: The invention provides osteocalcin that is chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 14, 2011
    Inventors: Steven O. Roczniak, Cherie F. Ali
  • POLYMER CONJUGATES OF OPIOID GROWTH FACTOR PEPTIDES
    Publication number: 20110171165
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 14, 2011
    Inventors: Dennis G. Fry, Christine Taylor Brew, Steven O. Roczniak, Xiaofeng Liu
  • POLYMER CONJUGATES OF GLP-2-LIKE PEPTIDES
    Publication number: 20110171164
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 14, 2011
    Applicant: Nektar Therapeutics
    Inventors: Mary J. Bossard, Steven O. Roczniak, Cherie F. Ali
  • POLYMER CONJUGATES OF KISS1 PEPTIDES
    Publication number: 20110171160
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 14, 2011
    Applicant: Nektar Therapeutics
    Inventors: Elizabeth Louise Minamitani, Harold Zappe, Mary J. Bossard, Steven O. Roczniak, Xiaofeng Liu
  • POLYMER CONJUGATES OF PROTEGRIN PEPTIDES
    Publication number: 20110171161
    Abstract: The invention provides protegrin that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention has enhanced half-life and/or reduced clearance.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 14, 2011
    Applicant: Nektar Therapeutics
    Inventors: Yujun Wang, Haim Moskowitz, Xiaofeng Liu, Steven O. Roczniak, Mary J. Bossard
  • POLYMER CONJUGATES OF ZICONOTIDE PEPTIDES
    Publication number: 20110171163
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 14, 2011
    Applicant: Nektar Therapeutics
    Inventors: Dawei Sheng, Harold Zappe, C. Simone Jude-Fishburn, Steven O. Roczniak, Mary J. Bossard
  • POLYMER CONJUGATES OF C-PEPTIDES
    Publication number: 20110165112
    Abstract: The invention provides pro insulin c-peptides that are chemically modified by covalent attachment of a water soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 7, 2011
    Applicant: Nektar Therapeutics
    Inventors: Mary J. Bossard, Dennis G. Fry, Steven O. Roczniak, Cherie F. Ali, Haim Moskowitz
  • POLYMER CONJUGATES OF THERAPEUTIC PEPTIDES
    Publication number: 20110166063
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 7, 2011
    Applicant: Nektar Therapeutics
    Inventors: Mary J. Bossard, Steven O. Roczniak, Harold Zappe, Yujun Wang, Ping Zhang, Dawei Sheng, C. Simone Jude-Fishburn, Elizabeth Louise Minamitani, Xiaofeng Liu, Haim Moskowitz, Dennis G. Fry, Cherie F. Ali, Christine Taylor Brew
  • POLYMER CONJUGATES OF V681-LIKE PEPTIDES
    Publication number: 20110165113
    Abstract: The invention provides peptides that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the peptide not attached to the water-soluble oligomer.
    Type: Application
    Filed: September 17, 2009
    Publication date: July 7, 2011
    Applicant: Nektar Therapeutics
    Inventors: Steven O. Roczniak, Ping Zhang, Haim Moskowitz
  • Solvent system for enzymatic coupling process
    Patent number: 4892820
    Abstract: Alkylphosphate solvents are disclosed for use in an amino acid and amino acid ester enzymatic coupling process. .alpha.-Aspartylphenylalanine methyl ester and intermediates thereof are prepared enzymatically in an alkylphosphate solvent or cosolvent.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: January 9, 1990
    Assignee: The Nutrasweet Company
    Inventors: John B. Hill, Steven O. Roczniak