Patents by Inventor James H. Liu

James H. 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: 7939098
    Abstract: Compositions and methods for vaginal, buccal or nasal transmucosal delivery of drugs and for cryoprotecting of cells and embryos. For cryoprotection, the composition consisting essentially consist of a non-ionizable glycol derivative. For transmucosal delivery, the compositions essentially consist of a non-ionizable glycol derivative in a combination with a pharmaceutically active agent. For transmucosal delivery, the non-ionizable glycol derivative may be further combined with a mucoadhesive agent and/or a penetration enhancer and/or lipophilic or hydrophilic carrier for adhesion to and transport through a mucosa. The compositions are particularly suitable for administration of drugs through a nasal, buccal and vaginal mucosa or for long-term preservation of cell or embryos.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 10, 2011
    Assignee: Femina Pharma Incorporated
    Inventors: Giovanni M. Pauletti, James H. Liu, Wolfgang A. Ritschell
  • Patent number: 7341737
    Abstract: A tampon adapted to deliver a therapeutic agent, the tampon including a tampon body having a distal end; and a dosage form affixed to the distal end of the tampon body, wherein the dosage form includes a formulation including a therapeutic agent, and wherein the dosage form comprises a plurality of layers. Also, a method for manufacturing a medicated tampon adapted to deliver a therapeutic agent, the method including manufacturing a tampon body having a distal end; producing a dosage form having a plurality of layers, wherein the dosage form includes a formulation including a therapeutic agent; and affixing the dosage form to the distal end of the tampon body.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: March 11, 2008
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Steven Craig Gehling, Donald C. Harrison, James H. Liu, Wolfgang A. Ritschel, Chris Clendening, Giovanni M. Pauletti
  • Patent number: 6982091
    Abstract: Devices, methods, and compositions for cancer therapy by administration of chemotherapeutic agents and/or inhibitors of membrane efflux systems to the vagina for topical and systemic tumor targets.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: January 3, 2006
    Assignee: UMD, Inc.
    Inventors: Giovanni M. Pauletti, James H. Liu, Leslie Z. Benet, Wolfgang A. Ritschel
  • Publication number: 20030219472
    Abstract: Compositions and methods for vaginal, buccal or nasal transmucosal delivery of drugs and for cryoprotecting of cells and embryos. For cryoprotection, the composition consisting essentially consist of a non-ionizable glycol derivative. For transmucosal delivery, the compositions essentially consist of a non-ionizable glycol derivative in a combination with a pharmaceutically active agent. For transmucosal delivery, the non-ionizable glycol derivative may be further combined with a mucoadhesive agent and/or a penetration enhancer and/or lipophilic or hydrophilic carrier for adhesion to and transport through a mucosa. The compositions are particularly suitable for administration of drugs through a nasal, buccal and vaginal mucosa or for long-term preservation of cell or embryos.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 27, 2003
    Inventors: Giovanni M. Pauletti, James H. Liu, Wolfgang A. Ritschell
  • Patent number: 6572874
    Abstract: Devices, methods, and compositions for vaginal delivery of bisphosphonates. A targeted site delivery of bisphosphonates to the vagina using a medicated intravaginal device comprising a bisphosphonate composition formulated for transvaginal delivery. A method for treatment of osteoporosis and related bone and skeleton diseases, for prevention of bone breakdown and loss of bone mass and strength by intravaginal administration of bisphosphonates to the vagina and transvaginal delivery of bisphosphonates to the general circulation.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: June 3, 2003
    Assignee: UMD, Inc.
    Inventors: Donald C. Harrison, James H. Liu, Giovanni M. Pauletti, Wolfgang A. Ritschel
  • Publication number: 20030049302
    Abstract: Devices, methods, and compositions for cancer therapy by administration of chemotherapeutic agents and/or inhibitors of membrane efflux systems to the vagina for topical and systemic tumor targets.
    Type: Application
    Filed: August 21, 2002
    Publication date: March 13, 2003
    Inventors: Giovanni M. Pauletti, James H. Liu, Leslie Z. Benet, Wolfgang A. Ritschel
  • Patent number: 6416779
    Abstract: Devices, methods, and compositions for treating vaginal fungal, bacterial, viral and parasitic infections by intravaginal or transvaginal administration of therapeutic and/or palliative antifungal, antibacterial, antiviral or parasiticidal drugs to the vagina or to the uterus.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: July 9, 2002
    Assignee: UMD, Inc.
    Inventors: Merida A. D'Augustine, James H. Liu, Donald C. Harrison
  • Patent number: 6197327
    Abstract: Methods, devices, and compositions for treatment of dysmenorrhea comprise an intravaginal drug delivery system containing an appropriate pharmaceutical agent incorporated into a pharmaceutically acceptable carrier whereby the pharmaceutical agent is released into the vagina and absorbed through the vaginal mucosa to provide relief of dysmenorrhea. The drug delivery system can be a tampon device, vaginal ring, pessary, tablet, suppository, vaginal sponge, bioadhesive tablet, bioadhesive microparticle, cream, lotion, foam, ointment, paste, solution or gel. The system delivers a higher concentration to the muscle of the uterus, the primary site for the dyskinetic muscle contraction, which is the pathophysiologic cause of dysmenorrhea.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: March 6, 2001
    Assignee: UMD, Inc.
    Inventors: Donald C. Harrison, James H. Liu, Wolfgang A. Ritschel, Roger A. Stern
  • Patent number: 6086909
    Abstract: Methods, devices, and compositions for treatment of dysmenorrhea comprise an intravaginal drug delivery system containing an appropriate pharmaceutical agent incorporated into a pharmaceutically acceptable carrier whereby the pharmaceutical agent is released into the vagina and absorbed through the vaginal mucosa to provide relief of dysmenorrhea. The drug delivery system can be a tampon device, vaginal ring, pessary, tablet, suppository, vaginal medicated tampon, vaginal sponge, bioadhesive tablet, bioadhesive microparticle, cream, lotion, foam, ointment, paste, solution or gel. The system delivers a higher concentration to the muscle of the uterus, the primary site for the dyskinetic muscle contraction, which is the pathophysiologic cause of dysmenorrhea.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: July 11, 2000
    Assignee: UMD, Inc.
    Inventors: Donald C. Harrison, James H. Liu, Wolfgang A. Ritschel, Roger A. Stern