Patents by Inventor Andrew X. Chen

Andrew X. Chen 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: 10369101
    Abstract: The present application provides parenteral compositions of diclofenac or its pharmaceutically acceptable salt and methods for making and using such compositions. Some of the compositions of the present application has one or more following properties: (1) ready to be injectable, (2) in the form of an oil-in-water emulsion, (3) stable under appropriate storage conditions, (4) containing therapeutically effective amount of diclofenac or its pharmaceutically acceptable salt, (5) sterilizable by filtration (6) containing components acceptable by regulatory agencies (e.g. the FDA), (7) containing low oil content and thus not exacerbating hyerlipidemia, and (8) is neither hyperallergenic nor vein irritating.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: August 6, 2019
    Assignee: LATITUDE PHARMACEUTICALS INC.
    Inventors: Franklin Okumu, Andrew X. Chen, Hailiang Chen
  • Publication number: 20160038414
    Abstract: The present application provides parenteral compositions of diclofenac or its pharmaceutically acceptable salt and methods for making and using such compositions. Some of the compositions of the present application has one or more following properties: (1) ready to be injectable, (2) in the form of an oil-in-water emulsion, (3) stable under appropriate storage conditions, (4) containing therapeutically effective amount of diclofenac or its pharmaceutically acceptable salt, (5) sterilizable by filtration (6) containing components acceptable by regulatory agencies (e.g. the FDA), (7) containing low oil content and thus not exacerbating hyerlipidemia, and (8) is neither hyperallergenic nor vein irritating.
    Type: Application
    Filed: March 17, 2014
    Publication date: February 11, 2016
    Inventors: Franklin Okumu, Andrew X. Chen, Hailiang Chen
  • Publication number: 20150265572
    Abstract: Provided herein are therapeutic prodrug compositions which may be delivered to a patient via an injectable emulsion, comprising a therapeutic drug linked to a peptide that is efficiently and specifically cleaved by a selected protease associated with a cell proliferative disorder, including cancer cells, for example, prostate, liver or breast cancer cells, in a patient. Also provided herein are methods of treating cell proliferative disorders, including cancers, with the therapeutic prodrug compositions.
    Type: Application
    Filed: October 14, 2013
    Publication date: September 24, 2015
    Applicant: GENSPERA, INC.
    Inventors: Andrew X Chen, Yali Tsai
  • Publication number: 20090221594
    Abstract: The invention provides a stable lyophilized composition of 5,10 methylenetetrahydrofolate suitable for use in the treatment of cancer and other therapies. The composition comprises 5,10-MTHF in combination with citric acid and ascorbic acid, with the ratio of citric acid to ascorbic acid from about 0.75:1 to about 2.25:1 by weight, and the ratio of total citric acid and ascorbic acid to 5,10-MTHF from about 1.4:1 to about 3.4:1 by weight. Prior to lyophilization, the solution is adjusted to an essentially neutral pH.
    Type: Application
    Filed: November 30, 2006
    Publication date: September 3, 2009
    Inventors: Andrew X. Chen, Hongjie Wu, Mark J. Cantwell, Joan M. Robbins
  • Patent number: 7575757
    Abstract: The present invention provides compositions and stable liquid formulations comprising alpha adrenergic receptor antagonists and use thereof for increasing blood flow. In one embodiment, the stable liquid formulations of this invention are useful for reversing the effects of an anesthetic agent, preferably a long-lasting local anesthetic agent administered in conjunction with an alpha adrenergic receptor agonist.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: August 18, 2009
    Assignee: Novalar Pharmaceuticals, Inc.
    Inventors: Andrew X. Chen, Julius Knowles, Eckard Weber
  • Patent number: 7569230
    Abstract: The present invention provides compositions and stable liquid formulations comprising alpha adrenergic receptor antagonists and use thereof for increasing blood flow. In one embodiment, the stable liquid formulations of this invention are useful for reversing the effects of an anesthetic agent, preferably a long-lasting local anesthetic agent administered in conjunction with an alpha adrenergic receptor agonist.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: August 4, 2009
    Assignee: Novalar Pharmaceuticals, Inc.
    Inventors: Andrew X Chen, Julius Knowles, Eckard Weber
  • Patent number: 7229630
    Abstract: The present invention provides compositions and stable liquid formulations comprising alpha adrenergic receptor antagonists and use thereof for increasing blood flow. In one embodiment, the stable liquid formulations of this invention are useful for reversing the effects of an anesthetic agent, preferably a long-lasting local anesthetic agent administered in conjunction with an alpha adrenergic receptor agonist.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: June 12, 2007
    Assignee: Novalar Pharmaceuticals, Inc.
    Inventors: Andrew X. Chen, Julius Knowles, Eckard Weber
  • Publication number: 20040044019
    Abstract: The present invention provides compositions and stable liquid formulations comprising alpha adrenergic receptor antagonists and use thereof for increasing blood flow. In one embodiment, the stable liquid formulations of this invention are useful for reversing the effects of an anesthetic agent, preferably a long-lasting local anesthetic agent administered in conjunction with an alpha adrenergic receptor agonist.
    Type: Application
    Filed: June 20, 2003
    Publication date: March 4, 2004
    Inventors: Andrew X. Chen, Julius Knowles, Eckard Weber
  • Publication number: 20030236306
    Abstract: Methods of reversing local anesthesia are disclosed. The methods comprise administering a local anesthetic and alpha adrenergic receptor agonist to induce local anesthesia followed by reversing anesthesia with a stable liquid formulation comprising an alpha adrenergic receptor antagonist. Also disclosed are stable liquid formulations comprising an alpha adrenergic receptor antagonist and kits comprising a local anesthetic, an alpha adrenergic receptor agonist and a stable liquid formulation comprising an alpha adrenergic receptor antagonist.
    Type: Application
    Filed: December 2, 2002
    Publication date: December 25, 2003
    Inventors: Andrew X. Chen, Julius Knowles, Eckard Weber, Howard I. Katz
  • Publication number: 20030191093
    Abstract: Disclosed are pharmaceutical compositions comprising an active vitamin D compound in emulsion pre-concentrate formulations, as well as emulsions and sub-micron droplet emulsions produced therefrom. The compositions comprise a lipophilic phase component, one or more surfactants, and an active vitamin D compound. The compositions may optionally further comprise a hydrophilic phase component.
    Type: Application
    Filed: December 3, 2002
    Publication date: October 9, 2003
    Applicant: Novacea, Inc.
    Inventors: Andrew X. Chen, Jun Fan, Xi-Yun Yu, Martha J. Whitehouse
  • Publication number: 20030099674
    Abstract: A stable and porous lyophilized cake or powder is disclosed, which contains paclitaxel or another water-insoluble taxoid drug. This preparation is created by dissolving a taxoid drug in oil and a surfactant, with each component selected to provide a final product that will be benign and gentle, compared to the harsher and more toxic carriers used in paclitaxel emulsions today. An alcohol can also be used during the drug mixing step, but it should be removed before subsequent processing. The oily solution is mixed with an aqueous solution containing an non-proteinous anti-adhesion agent with a collapse temperature preferably in a range of about −25° C. to about −35° C., such as sucrose. The mixture is processed to form an emulsion, with oil droplets averaging less than about 2 microns (and preferably less than 1 micron) in diameter.
    Type: Application
    Filed: August 12, 2002
    Publication date: May 29, 2003
    Inventor: Andrew X. Chen