Patents by Inventor Guohan Yang

Guohan Yang 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: 8962549
    Abstract: The present invention relates to polymeric derivatives, which can be conjugated to an amino-containing drug to improve its in vivo properties. The polymeric derivative can subsequently be released to yield the drug in its native form. Methods of preparing and using these polymeric derivatives and drug conjugates are described.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: February 24, 2015
    Assignees: Baxter International Inc., Baxter Healthcare SA
    Inventors: Guohan Yang, Ton That Hai, Bennett Melnick, Paul Sanders, Cong Jiang, Catherine Quinn, Jie Li, Arounaguiry Ambroise, Larry R. Brown
  • Publication number: 20140128445
    Abstract: The present invention relates to polymeric derivatives, which can be conjugated to an amino-containing drug to improve its in vivo properties. The polymeric derivative can subsequently be released to yield the drug in its native form. Methods of preparing and using these polymeric derivatives and drug conjugates are described.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicants: Baxter Healthcare SA, Baxter International Inc.
    Inventors: Guohan Yang, Ton That Hai, Bennett Melnick, Paul Sanders, Cong Jiang, Catherine Quinn, Jie Li, Arounaguiry Ambroise, Larry R. Brown
  • Patent number: 8653131
    Abstract: The present invention relates to polymeric derivatives, which can be conjugated to an amino-containing drug to improve its in vivo properties. The polymeric derivative can subsequently be released to yield the drug in its native form. Methods of preparing and using these polymeric derivatives and drug conjugates are described.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: February 18, 2014
    Assignees: Baxter Healthcare S.A., Baxter International Inc.
    Inventors: Guohan Yang, Ton That Hai, Bennett P. Melnick, Paul Sanders, Cong Jiang, Catherine Quinn, Jie Li, Arounaguiry Ambroise, Larry R. Brown
  • Patent number: 8642532
    Abstract: This invention is a method of using a class of excipients for protein formulation to reduce and/or eliminate protein aggregation in solutions or solids. This class of compounds contains carbonyl group(s) to form Schiff base(s) with amino groups of proteins and also contains moieties to keep protein molecules spatially separated. This method has never been disclosed anywhere in the literature.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: February 4, 2014
    Inventor: Guohan Yang
  • Publication number: 20140024582
    Abstract: The invention provides methods for improving the physical and chemical stabilities of therapeutic proteins in solutions by reducing or eliminating protein degradation, aggregation and precipitation using small molecule stabilizing agents such as proline, arginine and/or compounds capable of forming a Schiff bond with amino groups of the protein. The invention further provides liquid formulations of a monomeric insulin stabilized by one of more stabilizing agents such as proline, arginine and/or acetone. Also provided are methods of making and using the stabilized monomeric insulin formulations.
    Type: Application
    Filed: March 21, 2013
    Publication date: January 23, 2014
    Applicant: GENECOPOEIA, INC.
    Inventor: Guohan YANG
  • Publication number: 20110046052
    Abstract: This invention is a method of using a class of excipients for protein formulation to reduce and/or eliminate protein aggregation in solutions or solids. This class of compounds contains carbonyl group(s) to form Schiff base(s) with amino groups of proteins and also contains moieties to keep protein molecules spatially separated. This method has never been disclosed anywhere in the literature.
    Type: Application
    Filed: November 17, 2008
    Publication date: February 24, 2011
    Inventor: Guohan Yang
  • Patent number: 7875467
    Abstract: Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: January 25, 2011
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Anand A. Natrajan, Todd Sells, Hartmut Schroeder, Guohan Yang, David Sharpe, Qingping Jiang, Hana Lukinsky, Say-Jong Law
  • Publication number: 20100048483
    Abstract: The present invention relates to polymeric derivatives, which can be conjugated to an amino-containing drug to improve its in vivo properties. The polymeric derivative can subsequently be released to yield the drug in its native form. Methods of preparing and using these polymeric derivatives and drug conjugates are described.
    Type: Application
    Filed: August 21, 2009
    Publication date: February 25, 2010
    Applicants: BAXTER HEALTHCARE S.A., BAXTER INTERNATIONAL INC.
    Inventors: Guohan Yang, Ton T. Hai, Bennett Melnick, Paul Sanders, Cong Jiang, Catherine Quinn, Jie Li, Arounaguiry Ambroise, Larry R. Brown
  • Publication number: 20090029349
    Abstract: Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.
    Type: Application
    Filed: November 21, 2007
    Publication date: January 29, 2009
    Applicant: Siemens Medical Solutions Diagnostics
    Inventors: Anand A. Natrajan, Todd Sells, Hartmut Schroeder, Guohan Yang, David Sharpe, Qingping Jiang, Hana Lukinsky, Say-Jong Law
  • Publication number: 20080305557
    Abstract: Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.
    Type: Application
    Filed: November 21, 2007
    Publication date: December 11, 2008
    Applicant: Siemens Medical Solutions Diagnostics
    Inventors: Anand Natrajan, Todd Sells, Hartmut Schroeder, Guohan Yang, David Sharpe, Qingping Jiang, Hana Lukinsky, Say-Jong Law
  • Patent number: 7319041
    Abstract: Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: January 15, 2008
    Assignee: Siemens Medical Solutions Diagnostic
    Inventors: Anand Natrajan, Todd Sells, Hartmut Schroeder, Guohan Yang, David Sharpe, Qingping Jiang, Hana Lukinsky, Say-Jong Law
  • Publication number: 20070281031
    Abstract: An active agent and a non-polymeric polyanionic compound are allowed to be associated with a microparticle containing an anionic macromolecule and an anionic polymer in the presence of a crosslink activator. In a non-limiting example, the non-polymeric polyanionic compound is a polyanionic amino acid such as aspartic acid or glutamic acid. The microparticle can be used for modified release of the active agent in vitro and/or in vivo.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventor: Guohan Yang
  • Publication number: 20040063147
    Abstract: Chemiluminescent acridinium compounds are used in homogeneous assays to determine the concentration of an analyte in a sample without strong acid or strong base treatment. The chemiluminescent acridinium compounds include acridinium esters with electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus to inhibit pseudo-base formation, or acridinium sulfonamides with or without electron donating functional groups at the C2 and/or C7 position on the acridinium nucleus.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 1, 2004
    Applicant: BAYER CORPORATION
    Inventors: Anand Natrajan, Todd Sells, Hartmut Schroeder, Guohan Yang, David Sharpe, Qingping Jiang, Hana Lukinsky, Say-Jong Law
  • Publication number: 20030143607
    Abstract: Highly hydrophilic non-nucleosidic tags with multiple labels are provided for use in nucleic acid probes. The tags are branched structures having a phosphodiester backbone, which have the advantages of a small dimensional size and high hydrophilicity. After the tag is labeled, its high negative charge and minimal size help to keep the carriers away from DNA or RNA molecules, due to repulsion between negative charges. Non-specific intercalation and steric hindrance are therefore minimized, and the hydrophobicity, if any of reporter molecules is reduced. The probes are used in place of conventionally labeled oligonucleotides for a variety of hybridization reactions.
    Type: Application
    Filed: December 18, 2002
    Publication date: July 31, 2003
    Inventors: Guohan Yang, Donna M. Ford, Say-Jong Law, John E. Monahan, Todd B. Sells
  • Patent number: 6504019
    Abstract: Highly hydrophilic non-nucleosidic tags with multiple labels are provided for use in nucleic acid probes. The tags are branched structures having a phosphodiester backbone, which have the advantages of a small dimensional size and high hydrophilicity. After the tag is labeled, its high negative charge and minimal size help to keep the carriers away from DNA or RNA molecules, due to repulsion between negative charges. Non-specific intercalation and steric hindrance are therefore minimized, and the hydrophobicity, if any of reporter molecules is reduced. The probes are used in place of conventionally labeled oligonucleotides for a variety of hybridization reactions.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: January 7, 2003
    Assignee: Bayer Corporation
    Inventors: Guohan Yang, Donna M. Ford, Say-Jong Law, John E. Monahan, Todd B. Sells
  • Publication number: 20020015953
    Abstract: Highly hydrophilic non-nucleosidic tags with multiple labels are provided for use in nucleic acid probes. The tags are branched structures having a phosphodiester backbone, which have the advantages of a small dimensional size and high hydrophilicity. After the tag is labeled, its high negative charge and minimal size help to keep the carriers away from DNA or RNA molecules, due to repulsion between negative charges. Non-specific intercalation and steric hindrance are therefore minimized, and the hydrophobicity, if any of reporter molecules is reduced. The probes are used in place of conventionally labeled oligonucleotides for a variety of hybridization reactions.
    Type: Application
    Filed: March 21, 2001
    Publication date: February 7, 2002
    Inventors: Guohan Yang, Donna M. Ford, Say-Jong Law, John E. Monahan, Todd B. Sells