Patents by Inventor Leonardus Kresna Widjaja

Leonardus Kresna Widjaja 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).

  • Hyaluronic acid-based drug delivery systems
    Patent number: 9987367
    Abstract: The present invention relates to novel hyaluronic acid (HA) hydrogels comprising vesicles loaded with a drug or a protein or a nucleic acid. The new HA hydrogels provide sustain release formulations that are useful for several clinical and surgical applications, including but not limited to ophthalmology (e.g. glaucoma, corneal, ocular inflammatory, vitreoretinal and medical retinal diseases) and dermatological conditions.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: June 5, 2018
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Subramanian Venkatraman, Tina Tzee Ling Howden, Leonardus Kresna Widjaja
  • HYALURONIC ACID-BASED DRUG DELIVERY SYSTEMS
    Publication number: 20150250891
    Abstract: The present invention relates to novel hyaluronic acid (HA) hydrogels comprising vesicles loaded with a drug or a protein or a nucleic acid. The new HA hydrogels provide sustain release formulations that are useful for several clinical and surgical applications, including but not limited to ophthalmology (e.g. glaucoma, corneal, ocular inflammatory, vitreoretinal and medical retinal diseases) and dermatological conditions.
    Type: Application
    Filed: September 6, 2013
    Publication date: September 10, 2015
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Subramanian Venkatraman, Tina Tzee Ling Howden, Leonardus Kresna Widjaja
  • Biodegradable thermoplastic elastomers
    Patent number: 8716410
    Abstract: The present invention relates to a biodegradable thermoplastic elastomer having the general formula A-B-A wherein each A is an amorphous polymer having a glass transition temperature (Tg)>40° C. or a semi-crystalline polymer having a glass transition temperature (Tg) and/or melting temperature (Tm)>40° C.; B is a copolymer of -caprolactone (CL) and at least one additional monomer selected from the group consisting of L-lactic acid (LLA), trimethyl carbonate (TMC), and glycolic acid (GA), or B is different to A and is lactic-co-glycolic acid (LGA); and wherein the molar ratio of CL to the at least one additional monomer in the copolymer B is in the range between about 1:0.09 to about 1:1.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: May 6, 2014
    Assignee: Nanyang Technological University
    Inventors: Subramanian Venkatraman, Marc Abadie, Leonardus Kresna Widjaja, Vitali Llpik
  • BIODEGRADABLE THERMOPLASTIC ELASTOMERS
    Publication number: 20120283391
    Abstract: The present invention relates to a biodegradable thermoplastic elastomer having the general formula A-B-A wherein each A is an amorphous polymer having a glass transition temperature (Tg)>40° C. or a semi-crystalline polymer having a glass transition temperature (Tg) and/or melting temperature (Tm)>40° C.; B is a copolymer of -caprolactone (CL) and at least one additional monomer selected from the group consisting of L-lactic acid (LLA), trimethyl carbonate (TMC), and glycolic acid (GA), or B is different to A and is lactic-co-glycolic acid (LGA); and wherein the molar ratio of CL to the at least one additional monomer in the copolymer B is in the range between about 1:0.09 to about 1:1.
    Type: Application
    Filed: November 15, 2010
    Publication date: November 8, 2012
    Applicant: Nanyang Technological University
    Inventors: Subramanian Venkatraman, Marc Abadie, Leonardus Kresna Widjaja, Vitali Lipik