Patents by Inventor Patrick D. McDonald

Patrick D. McDonald 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: 7054833
    Abstract: A method and system for processing unclaimed property information. Escheat or unclaimed property information is periodically obtained from one or more unclaimed property repositories. The unclaimed property information maintained in multiple formats at the one or more unclaimed property repositories is transformed into a unified database format. Multiple database records are created in an unclaimed property database using the unified database format. Owners of unclaimed property, identified in the unclaimed property database are automatically located by searching one or more other databases on public and private computer networks such as the Internet. A located owner of unclaimed property is automatically notified as to the existence and amount of unclaimed property with electronic mail, an automatic voice recording or via paper documents. A graphical user interface available on a computer network is presented that allows an identified owner of unclaimed property to request unclaimed property.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: May 30, 2006
    Inventor: Patrick D. McDonald
  • Patent number: 6773583
    Abstract: A method for removing an organic solute from a solution comprises contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: August 10, 2004
    Assignee: Waters Investments Ltd.
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 6726842
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: April 27, 2004
    Assignee: Waters Investment Ltd.
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Publication number: 20040011729
    Abstract: A method for removing an organic solute from a solution comprises contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Application
    Filed: July 9, 2003
    Publication date: January 22, 2004
    Applicant: Waters Investments Ltd.
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Publication number: 20030042206
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 6, 2003
    Applicant: Waters Investments Ltd.
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 6468422
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: October 22, 2002
    Assignee: Waters Investments Ltd.
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Publication number: 20010035372
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Application
    Filed: June 5, 2001
    Publication date: November 1, 2001
    Applicant: Waters Corporation
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 6254780
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: July 3, 2001
    Assignee: Waters Corporation
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 6106721
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: August 22, 2000
    Assignee: Waters Corporation
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 5976367
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: November 2, 1999
    Assignee: Waters Corporation
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 5882521
    Abstract: A method for removing an organic solute from a solution, comprising contacting the solution with a polymer formed by copolymerizing one or more hydrophobic monomers and one or more hydrophilic monomers, whereby the solute is adsorbed onto the polymer. The solution can comprise a polar solvent such as a polar organic solvent or water or an aqueous buffer. The hydrophobic monomer can be, for example, divinylbenzene. The hydrophilic monomer can be, for example, a heterocyclic monomer, such as a vinylpyridine or N-vinylpyrrolidone.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: March 16, 1999
    Assignee: Waters Investment Ltd.
    Inventors: Edouard S. P. Bouvier, Randy E. Meirowitz, Patrick D. McDonald
  • Patent number: 4250035
    Abstract: Improved liquid chromatographic apparatus and an improved process for making and utilizing a chromatographic column. By providing means to exert radial pressure on the column packing, the packing efficiency of the column is increased and is more reproducible, and greater uniformity can be achieved in column performance both among packed columns of the same kind and during the useful life of a given packed column.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: February 10, 1981
    Assignee: Waters Associates, Inc.
    Inventors: Patrick D. McDonald, Carl W. Rausch
  • Patent number: 4211658
    Abstract: A cartridge is disclosed which comprises a volume of particulate packing material through which a fluid is to flow, a piece of solid porous material adjacent to the surface of the packing material though which the fluid is to enter the volume and a second piece of solid porous material adjacent to the surface of the packing material through which the fluid is to exit from the volume, and a heat-shrinkable tubing which triaxially compress the packing material into a tightly packed bed predominantly in the directions which are normal to and parallel to the direction of fluid flow through the packed bed and which extends beyond the pieces of solid porous material to form an inlet opening to and an outlet opening from the packed bed.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: July 8, 1980
    Assignee: Waters Associates, Inc.
    Inventors: Patrick D. McDonald, Richard V. Vivilecchia, David R. Lorenz