Patents by Inventor Chien-Hsuan Han

Chien-Hsuan Han 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: 20050220864
    Abstract: The present invention relates generally to pharmaceutical dosage forms having controlled release properties that contain a ?-aminobutyric acid (GABAB) receptor agonist, e.g., baclofen, for the treatment of medical conditions, which includes spasms, cramping, and tightness of muscles, associated with ailments such as multiple sclerosis or certain spinal injuries.
    Type: Application
    Filed: April 2, 2004
    Publication date: October 6, 2005
    Inventors: Chien-Hsuan Han, Ann Hsu, Larry Hsu, Charles Hsiao, Ching-Ling Teng
  • Publication number: 20050147670
    Abstract: The invention is directed to pharmaceutical dosage forms having immediate release via rapid oral disintegration, specifically, orally disintegrating tablets containing levodopa and carbidopa. The invention further provides formulations containing relatively increased amounts of carbidopa than previously available, including, for example, formulations containing carbidopa-levodopa ratios of about 1:1 to about 1:3.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 7, 2005
    Applicant: IMPAX Laboratories Inc.
    Inventors: Ann Hsu, Chien-Hsuan Han
  • Publication number: 20040166159
    Abstract: The present invention relates generally to pharmaceutical dosage forms having immediate and controlled release properties that contain an aromatic amino acid decarboxylase (AAAD) inhibitor (such as carbidopa), levodopa, and optionally a cathecol-O-methyltransferase (COMT) inhibitor, for the treatment of medical conditions associated with reduced dopamine levels in a patient's brain.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Inventors: Chien-Hsuan Han, Ann Hsu, Larry Hsu
  • Publication number: 20040097484
    Abstract: Disclosed are once a day pharmaceutical compositions containing acetylcholinesterase inhibitors, including those with nicotinic receptor modulation such as galantamine or a pharmaceutically acceptable salt thereof Also disclosed is the use of such compositions, for example, for treating or preventing cognitive or other CNS performance impairment in a mammal, such as primary or secondary memory impairment, toxic, secondary to medical or psychiatric, Alzheimer's, vascular and other dementias, mild cognitive impairments, and other cognitive impairments, such as Attention Deficit Disorder, Fibromyalgia, Chronic Fatigue Syndrome, PTSD and Down's Syndrome. This includes behavioral efficacy, as anxiety depression apathy and agitation, in addition to neurophysiological and functional outcomes including a decrease in care givers distress.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 20, 2004
    Inventors: Marc Cantillion, Ann Hsu, Chien-Hsuan Han
  • Publication number: 20030228360
    Abstract: The present invention relates to dosage forms of a combination of carbidopa and levodopa comprising both immediate release and controlled release components for the treatment of ailments associated with depleted amounts of dopamine in a patient's brain tissue.
    Type: Application
    Filed: September 12, 2002
    Publication date: December 11, 2003
    Inventors: Chien-Hsuan Han, Larry Hsu, Richard Ting, Charles Hsiao
  • Publication number: 20030224045
    Abstract: Dosage forms containing both immediate release and sustained release components for the treatment of ailments associated with depleted amounts of dopamine in brain tissue of a patient. The dosage forms contain a combination of carbidopa and levodopa.
    Type: Application
    Filed: May 29, 2002
    Publication date: December 4, 2003
    Inventors: Chien-Hsuan Han, Larry Hsu, Richard Ting, Charles Hsiao
  • Patent number: 6333332
    Abstract: This invention is directed to stabilized pharmaceutical preparations containing bupropion hydrochloride. The preferred stabilizers comprise salts of organic bases including those selected from the group consisting of creatinine hydrochloride, pyridoxine hydrochloride, and thiamine hydrochloride. Another stabilizer utilized includes a salt of an inorganic acid such as potassium phosphate monobasic. The compositions retain at least 80% of the initial potency of bupropion hydrochloride after one week at 60° and 75% relative humidity (RH), as well as four or twelve weeks at 40° C. and 75% RH.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: December 25, 2001
    Assignee: Impax Laboratories, Inc.
    Inventors: Chien-Hsuan Han, Gary Liaw