Patents by Inventor Wolfgang A. Ritschel

Wolfgang A. Ritschel 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: 7744916
    Abstract: A vaginal device for delivery of an anti-migraine or anti-nausea drug to the uterus and/or to the general circulation through vaginal mucosa. The device is at least partially coated with one or several layers of fluid impermeable material forming a cap, film, foam, foil or strip incorporated with mucoadhesive composition comprising the anti-migraine or anti-nausea drug.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: June 29, 2010
    Assignee: UMD, Inc.
    Inventors: Giovanni M. Pauletti, Michelle Wilson, Richard Soderstrom, Desai J. Kishorkumar, Wolfgang A. Ritschel
  • 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
  • Publication number: 20060002966
    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 18, 2005
    Publication date: January 5, 2006
    Inventors: Giovanni Pauletti, James Liu, Leslie Benet, Wolfgang Ritschel
  • 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: 20050249774
    Abstract: A vaginal device for delivery of an anti-migraine or anti-nausea drug to the uterus and/or to the general circulation through vaginal mucosa. The device is at least partially coated with one or several layers of fluid impermeable material forming a cap, film, foam, foil or strip incorporated with mucoadhesive composition comprising the anti-migraine or anti-nausea drug.
    Type: Application
    Filed: May 10, 2005
    Publication date: November 10, 2005
    Inventors: Giovanni Pauletti, Michelle Wilson, Richard Soderstrom, Kishorkumar Desai, Wolfgang Ritschel
  • Publication number: 20050163826
    Abstract: A tampon adapted to deliver a therapeutic agent, the tampon including a tampon body that is manufactured at a first manufacturing facility; and a dosage form coupled to the body, wherein the dosage form includes a formulation including a therapeutic agent, and wherein the dosage form is manufactured at a second manufacturing facility. Also, a method for producing a medicated tampon including manufacturing a tampon body at a first manufacturing facility; manufacturing a dosage form at a second manufacturing facility, wherein the dosage form includes a formulation including a therapeutic agent; and coupling the dosage form to the tampon body.
    Type: Application
    Filed: March 16, 2005
    Publication date: July 28, 2005
    Inventors: Steven Gehling, Donald Harrison, James Liu, Wolfgang Ritschel, Roger Stern
  • Publication number: 20040043071
    Abstract: A method, composition and device for intravaginal mucosal or transmucosal delivery of antimigraine and/or antinausea drugs to a female subject for treatment of migraine and other diseases accompanied by or associated with nausea and vomiting. A mucoadhesive composition comprising antimigraine or antinausea drugs, mucoadhesive agent, penetration enhancer or sorption promoter and a hydrophilic or lipophilic carries. An intravaginal device for delivery of antimigraine or antinausea drugs.
    Type: Application
    Filed: June 20, 2003
    Publication date: March 4, 2004
    Inventors: Giovanni M. Pauletti, Richard Soderstrom, Wolfgang A. Ritschel
  • 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: 6365185
    Abstract: The present invention relates to tablets which are time-controlled to release active agent at different rates in different regions of the digestive tract in order to maintain a substantially constant concentration in the blood. In one embodiment, a new modified release drug delivery system, for once a day peroral use, consisting of a solid core comprising an active agent together with a hydrogel, with the solid core being coated with a semi-permeable, self-destructing membrane which is optionally drilled to provide a release orifice, and then optionally further coated with the same or different active agent material. The device delivers the active agent in a substantially constant effective dose for the duration of the transit through the stomach and small intestine, followed by accelerated release when reaching the large intestine.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: April 2, 2002
    Assignee: University of Cincinnati
    Inventors: Wolfgang A. Ritschel, Mukul A. Agrawal
  • 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