Patents by Inventor Colin M. Snedeker

Colin M. Snedeker 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: 5498280
    Abstract: A phosphorescent and fluorescent marking composition, e.g., a crayon, comprising both high and low molecular weight polyethylene glycols in combination with phosphorescent and fluorescent pigments. The composition advantageously preferably further includes at least one filler, which preferably includes a water-miscible filler, a water-soluble surfactant, and a plasticizer.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: March 12, 1996
    Assignee: Binney & Smith Inc.
    Inventors: David C. Fistner, Colin M. Snedeker
  • Patent number: 5460647
    Abstract: A color-changing marking composition system, suitable for use in the form of crayons and pencils, comprising a first marking composition comprising wax, a Leuco dye capable of changing color upon contact with a color change-inducing compound, and a solvent capable of solubilizing the dye; and a second marking composition comprising wax and a color change-inducing compound, which is capable of inducing a color change in a Leuco dye with which it is brought in contact.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: October 24, 1995
    Assignee: Binney & Smith Inc.
    Inventors: Colin M. Snedeker, David C. Fistner
  • Patent number: 4978390
    Abstract: The present invention is a solid marking composition which may be in the form of, for example, a crayon or a marking pencil lead which is washable from fabrics, wallpaper, and painted surfaces and which also has working properties which closely approximate those achieved in conventional crayons. The composition includes a polyethylene glycol resin having a molecular weight of at least about 7,000, a water soluble surfactant which is other than a liquid at room temperatue, and a pigment. Optionally, the composition of the invention may include one or more of a compatible viscosity modifier, a compatible plasticizer, an antifoam agent, and an inert filler.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: December 18, 1990
    Assignee: Binney & Smith Inc.
    Inventor: Colin M. Snedeker