Patents by Inventor Mark M. Clark

Mark M. Clark 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).

  • Monoalkyl tin trialkoxides and/or monoalkyl tin triamides with low metal contamination and/or particulate contamination, and corresponding methods
    Patent number: 11966158
    Abstract: The purification of monoalkyl tin trialkoxides and monoalkyl tin triamides are described using fractional distillation and/or ultrafiltration. The purified compositions are useful as radiation sensitive patterning compositions or precursors thereof. The fractional distillation process has been found to be effective for the removal of metal impurities down to very low levels. The ultrafiltration processes have been found to be effective at removal of fine particulates. Commercially practical processing techniques are described.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: April 23, 2024
    Assignee: Inpria Corporation
    Inventors: Benjamin L. Clark, Dominick Smiddy, Thomas J. Lamkin, Mark Geniza, Joseph B. Edson, Craig M. Gates
  • COLLOIDAL POLYSULFONE FIBERS
    Publication number: 20070272608
    Abstract: Colloidal fibers and devices including colloidal fibers for the purification of water are provided. The fibers include colloidal particles having average diameters from 10 to 1000 nm that include a sulfone polymer. The length of the fibers is at least three times their average cross-sectional width of 35 to 400 ?m. The fibers may be made from a solution including the sulfone polymer and a solvent that is mixed with water. The fibers may remove organic matter from water and be regenerated with an alkali solution.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 29, 2007
    Inventor: Mark M. Clark
  • Water purification by polymer colloids
    Patent number: 7153420
    Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: December 26, 2006
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Mark M. Clark, Robert Riley
  • Water purification by polymer colloids
    Publication number: 20040092607
    Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 13, 2004
    Applicant: Board of Trustees of University of Illinois
    Inventors: Mark M. Clark, Robert Riley
  • Water purification by polymer colloids
    Patent number: 6669851
    Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: December 30, 2003
    Assignee: Board of Trustees of University of Illinois
    Inventors: Mark M. Clark, Robert Riley
  • Water purification by polymer colloids
    Publication number: 20030100617
    Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.
    Type: Application
    Filed: November 26, 2001
    Publication date: May 29, 2003
    Inventors: Mark M. Clark, Robert Riley