Patents by Inventor Mark T. DuPriest

Mark T. DuPriest 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).

  • Two Piece Housing For Drug Loading
    Publication number: 20100160870
    Abstract: A drug loading apparatus has a dispensing chamber housing formed by a top housing part and a bottom housing part. The top housing part is separable from the bottom housing part. A plunger is located in the bottom housing part such that the plunger forms a first fluid seal with an inner wall of the bottom housing part. When the top housing part is coupled to the bottom housing part, a second fluid seal is formed.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 24, 2010
    Applicant: Alcon Research, LTD.
    Inventors: Don A. Clements, Julie A. Clifford, Michell R. Dupre, Mark T. DuPriest, Michael J. Piazza, Pardeep K. Sethi, Roger Vanderlaan
  • Drug Loading Through Plunger
    Publication number: 20100152676
    Abstract: A drug loading apparatus includes a plunger with a through hole or slit valve located in the top face of the plunger. A dispensing chamber housing located in a drug delivery device is configured to receive the plunger so that a dispensing chamber is formed when the plunger is located in the dispensing chamber housing. The drug can then be loaded into the dispensing chamber through the plunger, and a piston with an end configured to seal the through hole or engage the plunger with the slit valve can then be inserted.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Applicant: Alcon Research, LTD.
    Inventors: Don A. Clements, Julie A. Clifford, Bruno Dacquay, Mark T. DuPriest, Robert Rodstrom, Robert J. Sanchez, JR., Pardeep K. Sethi
  • Substantially pure apraclonidine
    Patent number: 5612364
    Abstract: Compositions containing, and methods for controlling intraocular pressure with, substantially pure apraclonidine are disclosed.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: March 18, 1997
    Assignee: Alcon Laboratories, Inc.
    Inventors: Billie M. York, John M. Yanni, Mark T. DuPriest
  • Methods and compositions for controlling intraocular pressure with transition metal complexes
    Patent number: 5356932
    Abstract: Compositions and methods for controlling intraocular pressure using transition metal complexes are disclosed. Topical ophthalmic and systemic administration of the transition metal complexes is disclosed.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: October 18, 1994
    Assignee: Alcon Laboratories, Inc.
    Inventors: Hans R. Moll, Mark T. DuPriest, Daniel Kuzmich
  • Methods for controlling intraocular pressure with transition metal complexes
    Patent number: 5177105
    Abstract: Methods for lowering elevated intraocular pressure resulting from the instillation to the eye of sodium hyaluronate during surgery by administration of transition metal complexes are disclosed.
    Type: Grant
    Filed: January 14, 1992
    Date of Patent: January 5, 1993
    Assignee: Alcon Laboratories, Inc.
    Inventors: Hans R. Moll, Mark T. DuPriest
  • Intermediates in the preparation of chiral spirofluorenehydantoins
    Patent number: 5151544
    Abstract: Disclosed is a process for the synthesis of enantiomerically pure R and S isomers of 2,7-difluoro-4-methoxyspiro[9H-fluorene-9,4-imidazolidene]-2',5'-dione from 2,7-difluoro-4-methoxyfluorenone. Intermediate amino acid esters and urea esters and their preparation are also described.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: September 29, 1992
    Assignee: Alcon Laboratories, Inc.
    Inventors: Mark T. DuPriest, Raymond E. Conrow, Daniel Kuzmich
  • Methods and compositions for controlling, preventing and treating oxidative insult in the eye with transition metal complexes
    Patent number: 5030651
    Abstract: Methods for preventing and treating oxidative insult to the eye by the administration of transition metal complexes are disclosed.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: July 9, 1991
    Assignee: Alcon Laboratories. Inc.
    Inventors: Hans R. Moll, Mark T. DuPriest
  • Spirofluoreneisothiazolidinone dioxides as aldose reductase inhibitors
    Patent number: 4968809
    Abstract: New spirofluoreneisothiazolidinone dioxides and methods for their preparation are disclosed.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: November 6, 1990
    Inventor: Mark T. Dupriest
  • High energy ionizing protective 2,3-diamino-1,4-butanedithiol; 4,5-diamino-1,2-dithiane; and N-acyl and N-alkyl derivatives thereof, compositions and method of use therefor
    Patent number: 4755528
    Abstract: Disclosed are 2,3-diamino-1,4-butanedithiol; 4,5-diamino-1,2-dithiane; and their N-acyl and N-alkyl derivatives. Also disclosed are processes for preparing the disclosed compounds; pharmaceutical compositions comprising such compounds; and a method of treatment comprising administering such compounds and compositions when an antihypertensive effect or radioprotective effect is indicated.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: July 5, 1988
    Assignee: Alcon Laboratories, Inc.
    Inventors: Mark T. DuPriest, Billie M. York, Jr.
  • Method for treating hypertension with 2,3-diamino-1,4-butanedithiol; 4,5-diamino-1,2-dithiane; and N-acyl and N-alkyl derivatives thereof
    Patent number: 4659733
    Abstract: Disclosed are 2,3-diamino-1,4-butanedithiol; 4,5-diamino-1,2-dithiane; and their N-acyl and N-alkyl derivatives. Also disclosed are processes for preparing the disclosed compounds; pharmaceutical compositions comprising such compounds; and a method of treatment comprising administering such compounds and compositions when an antihypertensive effect or radioprotective effect is indicated.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: April 21, 1987
    Assignee: Alcon Laboratories, Inc.
    Inventors: Mark T. DuPriest, Billie M. York, Jr.