Patents by Inventor Scott I. DeFields

Scott I. DeFields 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).

  • Stain resistant coating composition
    Patent number: 6911069
    Abstract: Iodine or iodophor stain resistance is imparted to a surface by applying a hardenable coating composition containing an effective amount of a reducing agent having a redox potential sufficient to decolorize an iodine or iodophor stain. The reducing agent reacts with triiodide anion in the stain to change the stain coloration from a yellowish hue (e.g., yellow-white, yellow or brown) towards a lighter hue (e.g., pale yellow, white or transparent). This decolorization reaction takes place over a period of minutes, hours or days, and preferably can eventually cause the stain to disappear.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: June 28, 2005
    Assignee: Ecolab Inc.
    Inventors: Kim R. Smith, Scott I. DeFields, Keith E. Olson
  • Masking agent for iodine stains
    Patent number: 6756349
    Abstract: Iodine and iodophor stains are masked by applying to the stain sufficient starch to impart a bluer coloration to and thereby mask the stain. The masked stain can be left as is until further cleaning or other surface repair or replacement can take place. The masked stain may instead or also be subjected to the action of a suitable decolorizing agent. Meanwhile, the masked stain typically will be much less objectionable in appearance than the original stain.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: June 29, 2004
    Assignee: Ecolab Inc.
    Inventors: Kim R. Smith, Scott I. DeFields, Sara B. Peters
  • Stain resistant coating composition
    Publication number: 20040091616
    Abstract: Iodine or iodophor stain resistance is imparted to a surface by applying a hardenable coating composition containing an effective amount of a reducing agent having a redox potential sufficient to decolorize an iodine or iodophor stain. The reducing agent reacts with triiodide anion in the stain to change the stain coloration from a yellowish hue (e.g., yellow-white, yellow or brown) towards a lighter hue (e.g., pale yellow, white or transparent). This decolorization reaction takes place over a period of minutes, hours or days, and preferably can eventually cause the stain to disappear.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventors: Kim R. Smith, Scott I. DeFields, Keith E. Olson
  • MASKING AGENT FOR IODINE STAINS
    Publication number: 20040092416
    Abstract: Iodine and iodophor stains are masked by applying to the stain sufficient starch to impart a bluer coloration to and thereby mask the stain. The masked stain can be left as is until further cleaning or other surface repair or replacement can take place. The masked stain may instead or also be subjected to the action of a suitable decolorizing agent. Meanwhile, the masked stain typically will be much less objectionable in appearance than the original stain.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventors: Kim R. Smith, Scott I. DeFields, Sara B. Peters