Patents by Inventor Puchun Liu

Puchun Liu 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: 11427666
    Abstract: Described herein are silicone-containing acrylic polymers useful, for example, in transdermal drug delivery compositions, to methods of making and using them, to transdermal drug delivery compositions comprising them, and to methods of making and using such transdermal drug delivery compositions. The polymers are particular suitable for formulating amine drugs, such as amphetamine, methylphenidate, rivastigmine, paroxetine and clonidine.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: August 30, 2022
    Assignee: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jun Liao, Jilin Zhang, Puchun Liu, Steven Dinh
  • Patent number: 10987316
    Abstract: Described are transdermal drug delivery systems for the transdermal administration of tertiary amine drugs, such as rivastigmine, fentanyl or rotigotine, comprising a polymer matrix comprising a free base form of the drug and at least one carboxyl group-containing compound. In some embodiments, the systems include a rate-controlling membrane and a skin-contacting face adhesive apart from the polymer matrix.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 27, 2021
    Assignee: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jun Liao, Takito Shima, Puchun Liu, Steven Dinh
  • Publication number: 20200277424
    Abstract: Described herein are silicone-containing acrylic polymers useful, for example, in transdermal drug delivery compositions, to methods of making and using them, to transdermal drug delivery compositions comprising them, and to methods of making and using such transdermal drug delivery compositions. The polymers are particular suitable for formulating amine drugs, such as amphetamine, methylphenidate, rivastigmine, paroxetine and clonidine.
    Type: Application
    Filed: October 3, 2019
    Publication date: September 3, 2020
    Applicant: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jun Liao, Jilin Zhang, Puchun Liu, Steven Dinh
  • Patent number: 10406116
    Abstract: Described are pressure-sensitive adhesive polymers (PSAs) useful, for example, for application to the skin, such as in the field of transdermal drug delivery. The PSAs include polar groups modeled on one or more polar portions of skin lipids, which contribute to good skin adhesion properties. Methods of making the PSAs, compositions comprising them, and methods of making and using them also are provided.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: September 10, 2019
    Assignee: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jilin Zhang, Jun Liao, Puchun Liu, Steven Dinh
  • Patent number: 10406115
    Abstract: Described are pressure-sensitive adhesive polymers (PSAs) useful, for example, for application to the skin, such as in the field of transdermal drug delivery. The PSAs include polar groups modeled on one or more polar portions of skin lipids, which contribute to good skin adhesion properties. Methods of making the PSAs, compositions comprising them, and methods of making and using them also are provided.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: September 10, 2019
    Assignee: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jilin Zhang, Jun Liao, Puchun Liu, Steven Dinh
  • Publication number: 20190216729
    Abstract: The present invention relates to gastric retention delivery systems and controlled release compositions containing a pharmaceutically acceptable active agent and a delivery agent.
    Type: Application
    Filed: December 18, 2017
    Publication date: July 18, 2019
    Inventors: Jun Liao, Puchun Liu, Steven Dinh, Brahma Singh, Shingai Majuru, Prateek N. Bhargava
  • Publication number: 20190022228
    Abstract: This invention relates to microparticles and/or nanoparticles containing a delivery agent and/or an active agent. This invention also relates to pharmaceutical formulations and solid dosage forms, including controlled release solid dosage forms of active agent and a delivery agent.
    Type: Application
    Filed: February 12, 2018
    Publication date: January 24, 2019
    Inventors: George Klein, Shingai Majuru, Puchun Liu, Steven Dinh, Jun Liao, Jongbin Lee, Halina Levchik, Ehud Arbit, Nikhil Dhoot, Jamila Harris, Nai Fang Wang
  • Publication number: 20180338923
    Abstract: Oral insulin formulations and processes for preparing oral insulin formulations are provided.
    Type: Application
    Filed: January 19, 2018
    Publication date: November 29, 2018
    Inventors: Halina LEVCHIK, Moses OYEWUMI, Shingai MAJURU, William E. BAY, Jun LIAO, Puchun LIU, Steven DINH, Nikhil DHOOT
  • Patent number: 9717697
    Abstract: Compositions for the transdermal delivery of methylphenidate in a flexible, finite form are described. The compositions comprise a polymer matrix that includes methylphenidate or a pharmaceutically acceptable salt and at least one acrylic polymer that is non-reactive with methylphenidate. Methods using the compositions to achieve transdermal delivery of methylphenidate or for treating Attention Deficit Disorder (ADD) and/or Attention Deficit/Hyperactivity Disorder (ADHD), postural orthostatic tachycardia syndrome, or narcolepsy also are described.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: August 1, 2017
    Assignee: Noven Pharmaceuticals, Inc.
    Inventors: Jun Liao, Puchun Liu, Steven Dinh
  • Publication number: 20170189363
    Abstract: Described are methods for oral administration of therapeutic proteins and peptides, more specifically to the oral administration of therapeutic proteins and peptides with gastric acid modulators, and compositions of comprising a gastric acid modulator and a protein or peptide.
    Type: Application
    Filed: December 29, 2016
    Publication date: July 6, 2017
    Applicant: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jeffrey Klein, Anubhav Arora, Puchun Liu
  • Publication number: 20170100481
    Abstract: Described are transdermal pharmaceutical compositions exhibiting reduced skin irritation potential comprising a steroid and an antioxidant, useful for reducing the skin irritation associated with the use of transdermal drug delivery compositions. Methods of making and using the compositions also are described.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 13, 2017
    Applicant: Noven Pharmaceuticals, Inc.
    Inventors: Jeffrey KLEIN, Puchun LIU, Steven DINH
  • Publication number: 20170007548
    Abstract: Multi-polymer compositions for the transdermal delivery of drugs, such as amine-functional drugs, in a flexible, finite form are described. The compositions comprise a polymer matrix that includes a drug or a pharmaceutically acceptable salt thereof and a polymer matrix comprising acrylic polymer(s), polyisobutylene polymer(s) and styrene-isoprene-styrene block copolymer(s). Methods of manufacturing and methods of using the compositions also are described.
    Type: Application
    Filed: February 17, 2016
    Publication date: January 12, 2017
    Applicant: Noven Pharmaceuticals, Inc.
    Inventors: Joshua Kulakofsky, Puchun Liu
  • Publication number: 20160374954
    Abstract: Described are pressure-sensitive adhesive polymers (PSAs) useful, for example, for application to the skin, such as in the field of transdermal drug delivery. The PSAs include polar groups modeled on one or more polar portions of skin lipids, which contribute to good skin adhesion properties. Methods of making the PSAs, compositions comprising them, and methods of making and using them also are provided.
    Type: Application
    Filed: August 3, 2016
    Publication date: December 29, 2016
    Applicant: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jilin Zhang, Jun Liao, Puchun Liu, Steven Dinh
  • Patent number: 9498487
    Abstract: The present invention provides a topical composition comprising (a) at least one delivery agent compound and (b) a cromoglycic acid compound. Methods of treatment, and methods of preparing the topical composition are also provided.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: November 22, 2016
    Assignee: EMISPHERE TECHNOLOGIES, INC.
    Inventors: Puchun Liu, Steven Dinh, Ehud Arbit, Michael M. Goldberg
  • Publication number: 20160256406
    Abstract: Described are oligomeric/polymeric silicone fluids useful in transdermal drug delivery systems. Also described are compositions for the transdermal delivery of a drug comprising a drug-containing polymer matrix comprising a drug; a carrier polymer, and an oligomeric/polymeric silicone fluid having repeating —Si(CH3)2—O— units. Related methods and uses also are described.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 8, 2016
    Applicant: Noven Pharmaceuticals, Inc.
    Inventors: Puchun Liu, Steven Dinh, Jun Liao, Tsuyoshi Endo
  • Publication number: 20160228383
    Abstract: Described are pressure-sensitive adhesive polymers (PSAs) useful, for example, for application to the skin, such as in the field of transdermal drug delivery. The PSAs include polar groups modeled on one or more polar portions of skin lipids, which contribute to good skin adhesion properties. Methods of making the PSAs, compositions comprising them, and methods of making and using them also are provided.
    Type: Application
    Filed: February 5, 2016
    Publication date: August 11, 2016
    Applicant: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jilin Zhang, Jun Liao, Puchun Liu, Steven Dinh
  • Publication number: 20160184246
    Abstract: Described are transdermal drug delivery systems for the transdermal administration of agomelatine. Methods of making and using such systems also are described.
    Type: Application
    Filed: December 29, 2015
    Publication date: June 30, 2016
    Applicant: Noven Pharmaceuticals, Inc.
    Inventors: Puchun Liu, Patrick Dayal, Steven Dinh
  • Patent number: 9295726
    Abstract: Multi-polymer compositions for the transdermal delivery of drugs, such as amine-functional drugs, in a flexible, finite form are described. The compositions comprise a polymer matrix that includes a drug or a pharmaceutically acceptable salt thereof and a polymer matrix comprising acrylic polymer(s), polyisobutylene polymer(s) and styrene-isoprene-styrene block copolymer(s). Methods of manufacturing and methods of using the compositions also are described.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 29, 2016
    Assignee: NOVEN PHARAMCEUTICALS, INC.
    Inventors: Joshua Kulakofsky, Puchun Liu
  • Publication number: 20160030362
    Abstract: Described herein are silicone-containing acrylic polymers useful, for example, in transdermal drug delivery compositions, to methods of making and using them, to transdermal drug delivery compositions comprising them, and to methods of making and using such transdermal drug delivery compositions. The polymers are particular suitable for formulating amine drugs, such as amphetamine, methylphenidate, rivastigmine, paroxetine and clonidine.
    Type: Application
    Filed: July 28, 2015
    Publication date: February 4, 2016
    Applicant: NOVEN PHARMACEUTICALS, INC.
    Inventors: Jun Liao, Jilin Zhang, Puchun Liu, Steven Dinh
  • Publication number: 20150342899
    Abstract: Described are compositions and methods for combination therapy using a stimulant therapeutically active agent (such as amphetamine) and a non-stimulant therapeutically active agent (such as clonidine), such as for the treatment of Attention Deficit Disorder (ADD) and/or Attention Deficit/Hyperactivity Disorder (ADHD). Methods of making and using such systems also are described.
    Type: Application
    Filed: December 23, 2013
    Publication date: December 3, 2015
    Applicant: Noven Pharmaceuticals, Inc.
    Inventors: Joshua KULAKOFSKY, Puchun LIU