Patents by Inventor John W. Colvin

John W. Colvin 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: 7090916
    Abstract: The present invention provides a paper product for use in sterilizing an area. The paper product contains at least one paper sheet or pellet containing one or more dry chemical materials, one or more dry deliquescent materials, or mixtures thereof. The dry chemical materials are either inactive antimicrobial or biocidal chemical materials or are capable of reacting with another chemical material to produce one or more active antimicrobial or biocidal chemical materials. When the paper product is placed in an atmosphere containing water vapor, the deliquescent material(s) attracts water and dissolves, thereby either hydrating and rendering active the inactive antimicrobial or biocidal chemical material(s), or providing a medium in which the chemical materials will react to produce one or more active antimicrobial or biocidal chemical materials.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: August 15, 2006
    Assignee: CATHM, LLC
    Inventors: James A. Aamodt, John W. Colvin
  • Patent number: 6890481
    Abstract: The present invention provides a porous paper product impregnated with at least one chemical species. The porous paper product can be in the form of sheets, or compressed pellets. The porous paper can be prepared from a variety of sources, including wood pulp, kenaf, flax, or hemp. The chemical species impregnating the paper react and/or diffuse out of the paper to accomplish a variety of desired results. For example, diffusion of a volatile biocidal chemical out of pores in the paper create a no-growth zone on and immediately surrounding the impregnated paper. In this manner the impregnated paper can provide a sterile environment for activities such as food packaging/storage, the treatment of illness/injury, or waste disposal.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: May 10, 2005
    Assignee: Cathm, LLC
    Inventors: James A. Aamodt, John W. Colvin
  • Patent number: 6858317
    Abstract: A method for protecting wood and wood products from mold and sapstaining fungi for periods of at least about seven months is provided. The method employs a non-toxic mold inhibitor, which has been found to be unusually effective in providing resistance to mold and sapstaining fungi. Mold and fungi resistant wood and wood products are also provided.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: February 22, 2005
    Assignee: Cathm, LLC
    Inventors: James A. Aamodt, John W. Colvin
  • Publication number: 20040253470
    Abstract: A method for protecting wood and wood products from mold and sapstaining fungi for periods of at least about seven months is provided. The method employs a non-toxic mold inhibitor, which has been found to be unusually effective in providing resistance to mold and sapstaining fungi. Mold and fungi resistant wood and wood products are also provided.
    Type: Application
    Filed: June 10, 2003
    Publication date: December 16, 2004
    Inventors: James A. Aamodt, John W. Colvin
  • Publication number: 20030044314
    Abstract: The present invention provides a paper product for use in sterilizing an area. The paper product contains at least one paper sheet or pellet containing one or more dry chemical materials, one or more dry deliquescent materials, or mixtures thereof. The dry chemical materials are either inactive antimicrobial or biocidal chemical materials or are capable of reacting with another chemical material to produce one or more active antimicrobial or biocidal chemical materials. When the paper product is placed in an atmosphere containing water vapor, the deliquescent material(s) attracts water and dissolves, thereby either hydrating and rendering active the inactive antimicrobial or biocidal chemical material(s), or providing a medium in which the chemical materials will react to produce one or more active antimicrobial or biocidal chemical materials.
    Type: Application
    Filed: June 7, 2002
    Publication date: March 6, 2003
    Inventors: James A. Aamodt, John W. Colvin
  • Publication number: 20020110483
    Abstract: The present invention provides a porous paper product impregnated with at least one chemical species. The porous paper product can be in the form of sheets, or compressed pellets. The porous paper can be prepared from a variety of sources, including wood pulp, kenaf, flax, or hemp. The chemical species impregnating the paper react and/or diffuse out of the paper to accomplish a variety of desired results. For example, diffusion of a volatile biocidal chemical out of pores in the paper create a no-growth zone on and immediately surrounding the impregnated paper. In this manner the impregnated paper can provide a sterile environment for activities such as food packaging/storage, the treatment of illness/injury, or waste disposal.
    Type: Application
    Filed: December 3, 2001
    Publication date: August 15, 2002
    Inventors: James A. Aamodt, John W. Colvin