Patents by Inventor Tacey X. Viegas

Tacey X. Viegas 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: 6497157
    Abstract: For intrinsic dissolution testing, a drug pellet (i.e., the dissolution test sample) is retained within a cylindrical recess in a sample holder that is placed at the bottom of a dissolution vessel containing an appropriate dissolution medium with the sample holder oriented with the drug pellet facing up. During the testing cycle, the dissolution medium may be stirred, e.g., using a conventional USP 2 rotating paddle, while the sample holder (and drug pellet) remain stationary at the bottom of the vessel. The orientation of the drug pellet during testing (i.e., facing up) decreases the likelihood of retention of air bubbles formed at the surface of the drug pellet (which bubbles could otherwise decrease the effective dissolution rate), thereby providing more accurate and consistent intrinsic dissolution test results.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: December 24, 2002
    Assignee: Distek, Inc.
    Inventors: Tacey X. Viegas, Gerald Brinker, Michael Cai
  • Publication number: 20020064514
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug delivery to a body cavity of a mammal. The gels contain a mixture of a polyoxyalkylene block copolymer or polyether together with an ionic polysaccharide which is thermo-irreversibly gelled in the presence of a counter-ion.
    Type: Application
    Filed: December 10, 2001
    Publication date: May 30, 2002
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 6346272
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug delivery to a body cavity of a mammal. The gels contain a mixture of a polyoxyalkylene block copolymer or polyether together with an ionic polysaccharide which is thermo-irreversibly gelled in the presence of a counter-ion.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: February 12, 2002
    Assignee: MDV Technologies, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 6136334
    Abstract: Balanced pH, hyperosmotic, hypoosmotic, or isoosmotic gels are ideal vehicles for drug delivery. They are especially suited for topical body cavity or injection application of drugs or diagnostic agents; for drug or diagnostic agent delivery to the eye of a mammal; as protective corneal shields; or as ablatable corneal masks useful in laser reprofiling of the cornea. The compositions without the addition of a drug or diagnostic agent are useful as medical devices, for instance, in separating surgically or otherwise injured tissue as a means of preventing adhesions.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: October 24, 2000
    Assignee: MDV Technologies, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5958443
    Abstract: Balanced pH, hyperosmotic, hypoosmotic, or isoosmotic gels are ideal vehicles for drug delivery. They are especially suited for topical body cavity or injection application of drugs or diagnostic agents; for drug or diagnostic agent delivery to the eye of a mammal; as protective corneal shields; or as ablatable corneal masks useful in laser reprofiling of the cornea. The compositions without the addition of a drug or diagnostic agent are useful as medical devices, for instance, in separating surgically or otherwise injured tissue as a means of preventing adhesions.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: September 28, 1999
    Assignee: MDV Technologies, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5847023
    Abstract: Balanced pH, thermo-irreversible gels comprising a polyoxyalkylene compound and an ionic polysaccharide are ideal materials for the formation of a protective contact lens over the cornea of the eye of a mammal.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: December 8, 1998
    Assignee: MDV Technologies, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5593683
    Abstract: Compositions based upon aqueous gels for medical application, comprising polyoxyalkylene copolymers. Such gels which are isotonic, iso-osmotic, pH balanced, thermo-reversible gels are ideal vehicles for drug or diagnostic agent delivery.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: January 14, 1997
    Assignee: MDV Technologies, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5587175
    Abstract: Balanced pH, hyperosmotic, hypoosmotic, or isoosmotic gels are ideal vehicles for drug delivery. They are especially suited for topical body cavity or injection application of drugs or diagnostic agents; for drug or diagnostic agent delivery to the eye of a mammal; as protective corneal shields; or as ablatable corneal masks useful in laser reprofiling of the cornea. The compositions without the addition of a drug or diagnostic agent are useful as medical devices, for instance, in separating surgically or otherwise injured tissue as a means of preventing adhesions.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: December 24, 1996
    Assignee: MDV Technologies, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5376693
    Abstract: Balanced pH, thermo-irreversible gels comprising a polyoxyalkylene compound and an ionic polysaccharide are ideal materials for the formation of a protective contact lens over the cornea of the eye of a mammal.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: December 27, 1994
    Assignee: Mediventures Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5346703
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug delivery to a body cavity of a mammal. The gels contain a mixture of a polyoxyalkylene block copolymer or polyether together with an ionic polysaccharide which is thermo-irreversibly gelled in the presence of a counter-ion.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: September 13, 1994
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5318780
    Abstract: Balanced pH, hyperosmotic, hypoosmotic, or isoosmotic gels are ideal vehicles for drug delivery. They are especially suited for topical body cavity or injection application of drugs or diagnostic agents; for drug or diagnostic agent delivery to the eye of a mammal; as protective corneal shields; or as ablatable corneal masks useful in laser reprofiling of the cornea. The compositions without the addition of a drug or diagnostic agent are useful as medical devices, for instance, in separating surgically or otherwise injured tissue as a means of preventing adhesions.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: June 7, 1994
    Assignee: Mediventures Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5306501
    Abstract: Isotonic, iso-osmotic, pH balanced thermoreversible gels are ideal medical devices or vehicles for drug injection into the body of a mammal. The osmolality in the gel state can be calculated by assuming that a polyoxyalkylene block copolymer or polyether present in said gel does not contribute to the osmolality in the gel state, although it does contribute to the osmolality in the liquid state.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: April 26, 1994
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Robert S. Levinson
  • Patent number: 5300295
    Abstract: Aqueous gel drug delivery compositions and medical devices, useful for treating an eye condition, having hyperosmotic, iso-osmotic or hypo-osmotic characteristics in the gel state, are obtained by calculating the osmolality required in the liquid state to reach a desired osmotic force in the gelled state by assuming that a polyoxyalkylene block copolymer does not contribute to the osmolality in the gel state.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: April 5, 1994
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Robert S. Levinson
  • Patent number: 5298260
    Abstract: Iso-osmotic, hyperosmotic, or hypo-osmotic, pH balanced, thermoreversible gels are ideal medical devices or vehicles for drug delivery to the skin of a mammal. The osmolality in the gel state can be calculated by assuming that a polyoxyalkylene block copolymer or polyether present in said gel does not contribute to the osmolality in the gel state, although it does contribute to the measured osmolality in the liquid state.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: March 29, 1994
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Robert S. Levinson
  • Patent number: 5292516
    Abstract: Isotonic, iso-osmotic, pH balanced thermoreversible gels are ideal vehicles for drug delivery to a body cavity of a mammal. The osmolality in the gel state can be calculated by assuming that a polyoxyalkylene block copolymer or polyether present in said gel does not contribute to the osmolality in the gel state, although it does contribute to the osmolality in the liquid state.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: March 8, 1994
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Robert S. Levinson
  • Patent number: 5277911
    Abstract: Balanced pH, thermo-irreversible polyoxyalkylene polymer and ionic polysaccharide gels are ideal materials for use as an ablatable mask or coating over the cornea of the eye of a mammal during excimer laser keratectomy. The depth and smoothness of the ablated corneal surface can be controlled by molding the desired surface curvature into the mask surface using a contact lens as a mold which is pressed onto the gel surface coating the cornea.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: January 11, 1994
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5143731
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug delivery to a body cavity of a mammal. The gels contain a mixture of a polyoxyalkylene block copolymer or polyether together with an ionic polysaccharide which is thermo-irreversibly gelled in the presence of a counter-ion.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: September 1, 1992
    Assignee: Mediventures Incorporated
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5124151
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug injection into the body of a mammal.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: June 23, 1992
    Assignee: Mediventures Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5077033
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug delivery to the eye of a mammal.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: December 31, 1991
    Assignee: Mediventures Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry
  • Patent number: 5071644
    Abstract: Balanced pH, thermo-irreversible gels are ideal vehicles for drug delivery to the skin of a mammal.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: December 10, 1991
    Assignee: Mediventures, Inc.
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry