Patents by Inventor Kirk C. Chamberlin

Kirk C. Chamberlin 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).

  • Writing instruments for small children
    Patent number: 8272800
    Abstract: Crayons are formed of a unitary material with interior distances between surfaces to prevent insertion through the maximum mandibular opening of a child five years of age or younger.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: September 25, 2012
    Inventor: Kirk C. Chamberlin
  • Writing instruments for small children
    Publication number: 20120027498
    Abstract: Crayons are formed of a unitary material with interior distances between surfaces to prevent insertion through the maximum mandibular opening of a child five years of age or younger.
    Type: Application
    Filed: September 30, 2011
    Publication date: February 2, 2012
    Inventor: Kirk C. Chamberlin
  • Writing instruments for small children
    Patent number: 8038360
    Abstract: Crayons are formed of a unitary material with interior distances between surfaces to prevent insertion through the maximum mandibular opening of a child five years of age or younger.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: October 18, 2011
    Inventor: Kirk C. Chamberlin
  • Writing instruments for small children
    Publication number: 20080304896
    Abstract: Crayons are formed of a unitary material with interior distances between surfaces to prevent insertion through the maximum mandibular opening of a child five years of age or younger.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 11, 2008
    Inventor: Kirk C. Chamberlin