Patents Represented by Attorney Cliff D. Weston
  • Patent number: 7579389
    Abstract: An antimicrobial additive composition is provided which economically and efficiently imparts antimicrobial characteristics to acrylic polymers, and particularly thermoformable acrylic sheets made from such polymers. The antimicrobial composition comprises an alkyl dimethyl ammonium saccharinate, an oxathiazine, an azole, an isothiazoline, a chlorothalonil, and/or mixtures thereof, among others.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: August 25, 2009
    Assignee: Microban Products Company
    Inventor: Ivan Wei-Kang Ong
  • Patent number: 7507281
    Abstract: An antimicrobial cementitious composition for imparting antimicrobial characteristics to cement comprises a cement-based compound and an imazalil agent; combinations of agents also may be employed.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: March 24, 2009
    Assignee: Microban Products Company
    Inventors: Ivan W. Ong, H. Wayne Swofford
  • Patent number: 7250178
    Abstract: An antimicrobial ceramic glazing composition comprising zinc borate for imparting antimicrobial characteristics to numerous ceramic products. A method for producing the antimicrobial glazing composition and ceramic products incorporating the antimicrobial glazing composition.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: July 31, 2007
    Assignee: Microban Products Company
    Inventors: Anders Olsson, Howard Wayne Swofford
  • Patent number: 7223443
    Abstract: An antimicrobial cementitious composition for imparting antimicrobial characteristics to cement comprises cement and an antimicrobial agent selected from the group consisting of an ortho-phenyl phenol or salt thereof, a tolyl diiodomethyl sulfone, a zinc pyrithione, an oxathiazine, an azole, a chlorothalonil, and a triazine diamine; combinations of agents also may be employed.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: May 29, 2007
    Assignee: Microban Products Company
    Inventor: Ivan Wei-Kang Ong
  • Patent number: 7098256
    Abstract: The invention is a radiation curable coating containing an antimicrobial agent, where upon irradiation with UV light, the radiation curable coating rapidly cures to a polymeric coating. The polymeric coating has durable antimicrobial properties, being especially effective at preventing the growth of Staphylococcus aureaus and Kleibsella pneumoniae on wood flooring and furniture. The major components in the radiation curable coating are a urethane acrylic oligomer, a radiation cure package, an antimicrobial agent, a cross-linking agent, and optionally, an additive package. The radiation curable urethane oligomer is a relatively short chain backbone urethane polymer that is end capped with a radiation curable moiety, where the moiety is an acrylic. The cross-linking agent is one or more monomers used to lower the viscosity and promote cross-linking, and include acrylate esters of mono-, di-, tri-, or tetrafunctional alcohols. The radiation cure package contains at least one photoinitiator.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: August 29, 2006
    Assignee: Microban Products Company
    Inventors: Ivan W. Ong, Julia M. Watterson, legal representative, C. Barry Wilson, Robert S. Watterson, deceased