Patents by Inventor James N. Chang

James N. Chang 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).

  • Publication number: 20080207494
    Abstract: Cyclosporin A compositions are disclosed herein comprising an oil and a surfactant. These are useful in the treatment of dry eye disease.
    Type: Application
    Filed: July 12, 2006
    Publication date: August 28, 2008
    Inventors: James N. Chang, Orest Olejnik, Bruce A. Firestone
  • Publication number: 20080207561
    Abstract: A novel biomaterial is disclosed having unique properties that make it useful in ocular drug delivery applications, where the drugs selected from the group consisting of a prostaglandin, a prostamide, a non-steroidal anti-inflammatory drug (NSAID), and a corticosteroid, and mixtures, derivatives, salts and esters thereof.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 28, 2008
    Inventors: Ronald E. Utecht, Kaia L. Kloster, Therese M. Downey, Barbara R. Haberer, Patrick D. Youso, James N. Chang
  • Publication number: 20080193502
    Abstract: Biocompatible intraocular implants include an anti-excitotoxic agent and a biodegradable polymer that is effective to facilitate release of the anti-excitotoxic agent into an eye for an extended period of time. The therapeutic agents of the implants may be associated with a biodegradable polymer matrix, such as a matrix that is substantially free of a polyvinyl alcohol. The implants may be placed in an eye to treat or reduce the occurrence of one or more ocular conditions, such as retinal damage, including glaucoma and proliferative vitreoretinopathy.
    Type: Application
    Filed: April 17, 2008
    Publication date: August 14, 2008
    Applicant: ALLERGAN, INC.
    Inventors: PATRICK M. HUGHES, LON T. SPADA, HIROSHI SUGIMOTO, WENDY M. BLANDA, JAMES N. CHANG
  • Publication number: 20080193503
    Abstract: Biocompatible intraocular implants include an anti-excitotoxic agent and a biodegradable polymer that is effective to facilitate release of the anti-excitotoxic agent into an eye for an extended period of time. The therapeutic agents of the implants may be associated with a biodegradable polymer matrix, such as a matrix that is substantially free of a polyvinyl alcohol. The implants may be placed in an eye to treat or reduce the occurrence of one or more ocular conditions, such as retinal damage, including glaucoma and proliferative vitreoretinopathy.
    Type: Application
    Filed: April 17, 2008
    Publication date: August 14, 2008
    Applicant: ALLERGAN, INC.
    Inventors: PATRICK M. HUGHES, LON T. SPADA, HIROSHI SUGIMOTO, WENDY M. BLANDA, JAMES N. CHANG
  • Publication number: 20080145407
    Abstract: Biocompatible intraocular implants include a steroid and an auxiliary agent, where the auxiliary agent is present in an amount sufficient to lessen the severity of at least one side effect compared to the use of an otherwise identical implant lacking said auxiliary agent. The steroid and the auxiliary agent may be present on the same intraocular implant or on different implants. The steroid and auxiliary agent may be associated with a biodegradable polymer matrix, such as a matrix of a two biodegradable polymers. Or, the steroid may be associated with a polymeric coating having one or more openings effective to permit the steroid to be released into an external environment. The implants containing the steroid and an auxiliary agent may be placed in an eye to treat one or more ocular conditions while reducing the side effects otherwise accompanying steroid use.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 19, 2008
    Applicant: ALLERGAN, INC.
    Inventors: Glenn T. Huang, Thierry Nivaggioli, Lon T. Spada, Hiroshi Sugimoto, Wendy M. Blanda, James N. Chang, Orest Olejnik
  • Publication number: 20080145403
    Abstract: Biocompatible implants comprising a cyclic lipid therapeutic agent are made using a low temperature melt extrusion process. The implants are suitable for intraocular use to treat an ocular condition.
    Type: Application
    Filed: December 19, 2006
    Publication date: June 19, 2008
    Applicant: ALLERGAN, INC.
    Inventors: Lon T. Spada, James N. Chang, Michelle Luu
  • Publication number: 20080097335
    Abstract: Ocular implant delivery assemblies are provided which include a cannula having a lumen extending therethrough, a proximal end, a proximal end opening, a distal end, a distal end opening, and a lumen extending through the cannula. A removable distal closure element is provided for closing the distal end opening, and a removable proximal closure element is provided for closing the proximal end opening. An ocular implant is located in the lumen. The implant may be sealed in the cannula without the addition of a liquid carrier or it may be contained in a liquid carrier medium in the cannula. The implant may be made up of a number of microparticles having different compositions or different forms. The assembly also includes a sleeve located on the proximal end of the cannula and suitable for coupling the assembly to a syringe containing a pushing gel.
    Type: Application
    Filed: October 25, 2006
    Publication date: April 24, 2008
    Applicant: ALLERGAN, INC.
    Inventors: John T. Trogden, Robert T. Lyons, James N. Chang, Michael R. Robinson
  • Publication number: 20080033351
    Abstract: Ocular implant delivery assemblies are provided which include a cannula having a lumen extending therethrough, a proximal end, a proximal end opening, a distal end, a distal end opening, and a lumen extending through the cannula. A cap is provided having a closed distal end, being in contact with the outer wall of the cannula, and covering the distal end and the distal end opening of the cannula, the cap being structured to allow the distal end and the distal end opening of the cannula to pass through the cap as the cannula is passed into an eye. An ocular implant is located in the lumen. The implant may be sealed in the cannula without the addition of a liquid carrier or it may be contained in a liquid carrier medium in the cannula. The implant may be made up of a number of microparticles having different compositions or different forms. The assembly also includes a sleeve located on the proximal end of the cannula and suitable for coupling the assembly to a syringe containing a pushing gel.
    Type: Application
    Filed: October 25, 2006
    Publication date: February 7, 2008
    Applicant: ALLERGAN, INC.
    Inventors: John T. Trogden, Robert T. Lyons, James N. Chang, Michael R. Robinson, Werhner C. Orilla
  • Publication number: 20070293873
    Abstract: Apparatus and methods for implanting ocular implants in eyes are provided which include a cannula having a lumen extending therethrough, the lumen having a length and a diameter and being configured to receive an ocular implant. The ocular implant is made up of a plurality of substantially uniformly sized particles, preferably a plurality of uniformly sized microspheres, arranged in a one-by-one array along the length of the lumen. The apparatus further comprises a mechanism for delivering the implant through the distal end of the lumen and into the eye, preferably without the use of a liquid or gel carrier medium located in the lumen along with the implant.
    Type: Application
    Filed: June 19, 2006
    Publication date: December 20, 2007
    Applicant: ALLERGAN, INC.
    Inventor: James N. Chang
  • Patent number: 7297679
    Abstract: A composition comprising from about 0.001% to about 0.4% cyclosporin A, a surfactant, and an oil having a specific gravity from 0.8 to 0.95 is disclosed herein.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: November 20, 2007
    Assignee: Allergan, Inc.
    Inventors: James N. Chang, Orest Olejnik, Bruce A. Firestone
  • Patent number: 7288520
    Abstract: A composition is disclosed herein comprising from about 0.001% to about 0.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: October 30, 2007
    Assignee: Allergan, Inc.
    Inventors: James N. Chang, Orest Olejnik, Bruce A. Firestone
  • Patent number: 7276476
    Abstract: A composition comprising from 0.001% to about 0.4% cyclosporin A, a surfactant, and an oil selected from the group consisting of anise oil, clove oil, cassia oil, cinnamon oil, and combinations thereof, wherein said composition is an ophthalmically acceptable emulsion is disclosed herein.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: October 2, 2007
    Assignee: Allergan, Inc.
    Inventors: James N. Chang, Orest Olejnik, Bruce A. Firestone
  • Publication number: 20070202187
    Abstract: Dosage forms comprising therapeutically active compounds are disclosed herein.
    Type: Application
    Filed: February 20, 2007
    Publication date: August 30, 2007
    Inventors: Chin-Ming Chang, James N. Chang, E. Quinn Farnes
  • Patent number: 7202209
    Abstract: A composition comprising a therapeutically effective amount of cyclosporin A, a blend of oils having a specific gravity of from 0.90 to 1.07, and a surfactant is disclosed herein.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: April 10, 2007
    Assignee: Allergan, Inc.
    Inventors: James N. Chang, Orest Olejnik, Bruce A. Firestone
  • Patent number: 7045121
    Abstract: Ophthalmic compositions include an ophthalmically acceptable carrier component, for example, an aqueous-based carrier, and a plurality of polyanionic component portions having different molecular weights. In one embodiment, the polyanionic component includes a first polyanionic component portion having a first molecular weight; and a second polyanionic component portion having a different second molecular weight. Each of the first and second polyanionic component portions is present in an amount effective to provide lubrication to an eye when the composition is administered to an eye. Methods of making and using such compositions are also disclosed.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: May 16, 2006
    Assignee: Allergan, Inc.
    Inventors: James N. Chang, Teresa H. Kuan
  • Patent number: 6933289
    Abstract: This invention relates to a method of reducing an irritating or adverse side effect associated with the topical use of an active ophthalmic drug comprising incorporating an effective amount of a cyclodextrin or cyclodextrin derivative into a formulation to complex the active drug such that the concentration of the free active drug is reduced below a tolerable threshold, and incorporating an effective amount of a viscosity increasing agent in said formulation such that the bioavailability of said drug is high enough to be therapeutically effective, wherein the cyclodextrin or cyclodextrin derivative is not required to solubilize the active drug. Another aspect of this invention relates to topical ophthalmic formulations comprising an active drug, a cyclodextrin or cyclodextrin derivative, and a viscosity-enhancing agent, in effective amounts as stated above.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: August 23, 2005
    Assignee: Allergan, Inc.
    Inventors: Robert T. Lyons, James N. Chang
  • Publication number: 20040191332
    Abstract: Ophthalmic compositions include a carrier component, an oxy-chloro component present at an amount effective in preserving the composition, and at least one additional component, e.g. a borate component and/or a glycerin component present in an amount effective to enhance a preservative efficacy of the composition. The compositions preferably also include one or more other components, such as therapeutic components, e.g., quinoxaline components, and polyanionic components effective to provide the compositions with one or more functionalities.
    Type: Application
    Filed: March 27, 2003
    Publication date: September 30, 2004
    Applicant: Allergan, Inc.
    Inventors: James N. Chang, Richard Graham, Orest Olejnik, Stanley W. Huth, Michelle Luu
  • Publication number: 20040152664
    Abstract: Disclosed herein are compositions comprising cyclodextrin derivatives and prednisolone and prodrugs thereof, and methods related thereto. The use of soluble polyanionic polymers such as hydroxypropylmethylcellulose and others in relation to these compositions is also disclosed. Delivery of these prednisolone-related compounds to the back of the eye via topical ophthalmic administration is also disclosed.
    Type: Application
    Filed: January 23, 2004
    Publication date: August 5, 2004
    Applicant: Allergan, Inc.
    Inventors: Chin-Ming Chang, James N. Chang, Michelle Luu, Robert T. Lyons, Orest Olejnik
  • Publication number: 20040005289
    Abstract: Ophthalmic compositions include an ophthalmically acceptable carrier component, for example, an aqueous-based carrier, and a plurality of polyanionic component portions having different molecular weights. In one embodiment, the polyanionic component includes a first polyanionic component portion having a first molecular weight; and a second polyanionic component portion having a different second molecular weight. Each of the first and second polyanionic component portions is present in an amount effective to provide lubrication to an eye when the composition is administered to an eye. Methods of making and using such compositions are also disclosed.
    Type: Application
    Filed: December 14, 2001
    Publication date: January 8, 2004
    Applicant: Allergan Sales, Inc
    Inventors: James N. Chang, Teresa H. Kuan
  • Patent number: 6635654
    Abstract: The present invention is directed to an ophthalmic formulation which comprises a therapeutically effective amount of ethyl 4-(8-chloro-5,6-dihydro-11-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-1-piperidinecarboxylate, known as loratadine, a fatty acid ester, and a surfactant, which has been found to be useful in treating ocular allergies, especially allergic conjunctivitis, and related conditions.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: October 21, 2003
    Assignee: Allergan, Inc.
    Inventors: Chin-Ming Chang, Eldon Q. Farnes, Orest Olejnik, James N. Chang