Patents by Inventor Weiliam Chen

Weiliam 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: 10744099
    Abstract: A sterile pharmaceutical dosage form which comprises an ester capped lactide polymer, glycolide polymer or a lactide-glycolide copolymer hypercompressed with an active pharmaceutical ingredient wherein said sterile pharmaceutical dosage form has been sterilized with an electron beam and a method of preparing said sterile pharmaceutical dosage form.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: August 18, 2020
    Assignee: SUSTAINED NANO SYSTEMS LLC
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Publication number: 20200085755
    Abstract: A sterile pharmaceutical dosage form which comprises an ester capped lactide polymer, glycolide polymer or a lactide-glycolide copolymer hypercompressed with an active pharmaceutical ingredient wherein said sterile pharmaceutical dosage form has been sterilized with an electron beam and a method of preparing said sterile pharmaceutical dosage form.
    Type: Application
    Filed: November 19, 2019
    Publication date: March 19, 2020
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Patent number: 10500163
    Abstract: A sterile pharmaceutical dosage form which comprises an ester capped lactide polymer, glycolide polymer or a lactide-glycolide copolymer hypercompressed with an active pharmaceutical ingredient wherein said sterile pharmaceutical dosage form has been sterilized with an electron beam and a method of preparing said sterile pharmaceutical dosage form.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: December 10, 2019
    Assignee: SUSTAINED NANO SYSTEMS LLC
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Patent number: 10406102
    Abstract: A pharmaceutical dosage form which comprises a lactide, glycolide or lactide-glycolide polymer, a block polymer of polyglycolide, trimethylene carbonate, poly-caprolactone, and polyethylene oxide that is combined with a peptide or protein therapeutic agent in the form of microparticles which are compressed using a pressure of 50,000 to 350,000 psi.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 10, 2019
    Assignee: SUSTAINED NANO SYSTEMS LLC
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Publication number: 20190015347
    Abstract: A sterile pharmaceutical dosage form which comprises an ester capped lactide polymer, glycolide polymer or a lactide-glycolide copolymer hypercompressed with an active pharmaceutical ingredient wherein said sterile pharmaceutical dosage form has been sterilized with an electron beam and a method of preparing said sterile pharmaceutical dosage form.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Publication number: 20190015336
    Abstract: A pharmaceutical dosage form which comprises a lactide, glycolide or lactide-glycolide polymer, a block polymer of polyglycolide, trimethylene carbonate, poly-caprolactone, and polyethylene oxide that is combined with a peptide or protein therapeutic agent in the form of microparticles which are compressed using a pressure of 50,000 to 350,000 psi.
    Type: Application
    Filed: July 10, 2018
    Publication date: January 17, 2019
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Publication number: 20180133363
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Application
    Filed: July 19, 2017
    Publication date: May 17, 2018
    Inventors: Weiliam Chen, John M. Abrahams
  • Patent number: 9731044
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 15, 2017
    Assignee: Endomedix, Inc.
    Inventors: Weiliam Chen, John M. Abrahams
  • Publication number: 20160213811
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Inventors: Weiliam Chen, John M. Abrahams
  • Patent number: 9259434
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: February 16, 2016
    Assignee: Endomedix, Inc.
    Inventors: Weiliam Chen, John M. Abrahams
  • Publication number: 20140107065
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Application
    Filed: July 16, 2013
    Publication date: April 17, 2014
    Inventors: Weiliam Chen, John M. Abrahams
  • Patent number: 8513217
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: August 20, 2013
    Assignee: Endomedix, Inc.
    Inventors: Weiliam Chen, John M. Abrahams
  • Patent number: 8071119
    Abstract: A dispensing device having a polymer which is combined with a therapeutic agent in the form of a microparticle or nanoparticle which is “hyper-compressed” to form a controlled release dispensing device and methods of locally administering a therapeutic agent using said microparticles.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: December 6, 2011
    Assignee: Sustained Nano Systems LLC
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Publication number: 20110002999
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Application
    Filed: September 15, 2010
    Publication date: January 6, 2011
    Inventors: Weiliam Chen, John M. Abrahams
  • Patent number: 7854923
    Abstract: A tissue sealant for use in surgical and medical procedures for sealing the tissues of a living mammal is provided. The tissue sealant comprises a hydrogel which is formed by gelation of a premix disposed on the tissue to be sealed. The premix comprises alkylated chitosan or a gelatin, and a polybasic carboxylic acid or an oxidized polysaccharide, in an aqueous medium. The premix can also include a dehydrating reagent, a carboxyl activating reagent, or both. A specific use of the tissue sealant is in the repair of the dura mater after brain surgery to prevent leakage of cerebrospinal fluid. The tissue sealant may include a therapeutic or protective agent such as an antibiotic or an anti-inflammatory drug.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: December 21, 2010
    Assignee: Endomedix, Inc.
    Inventors: Weiliam Chen, John M. Abrahams
  • Publication number: 20100233267
    Abstract: The present invention features a composite hydrogel for use as soft tissue substitutes and transitional three-dimensional support structures.
    Type: Application
    Filed: February 1, 2008
    Publication date: September 16, 2010
    Applicant: The Research Foundation of State University of New York
    Inventors: Weiliam Chen, Lihui Weng, Hui Pan
  • Patent number: 7763268
    Abstract: The present invention features dual network hydrogels that possess the structural, mechanical, and biological properties required of load bearing three-dimensional support structures.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: July 27, 2010
    Assignee: The Research Foundation of State University of New York
    Inventors: Weiliam Chen, Lihui Weng
  • Publication number: 20100178346
    Abstract: The present invention relates to materials comprising hyaluronic acid for replacement or augmentation of the nucleus pulposus The materials have a Poisson's ratio of 0.40 to 0.80 based on that of the human nucleus pulposus.
    Type: Application
    Filed: February 1, 2008
    Publication date: July 15, 2010
    Applicant: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
    Inventors: Neil R. Malhotra, Weiliam Chen, Dawn M. Elliott
  • Publication number: 20100173000
    Abstract: A dispensing device having a polymer which is combined with a therapeutic agent in the form of a microparticle or nanoparticle which is “hyper-compressed” to form a controlled release dispensing device and methods of locally administering a therapeutic agent using said microparticles.
    Type: Application
    Filed: November 25, 2009
    Publication date: July 8, 2010
    Applicant: SUSTAINED NANO SYSTEMS LLC
    Inventors: Barry M. Libin, Jeffrey M. Liebmann, Weiliam Chen
  • Publication number: 20100029789
    Abstract: The present invention features dual network hydrogels that possess the structural, mechanical, and biological properties required of load bearing three-dimensional support structures.
    Type: Application
    Filed: January 16, 2009
    Publication date: February 4, 2010
    Inventors: Weiliam Chen, Lihui Weng