Patents by Inventor Don Henderson

Don Henderson 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).

  • Low viscosity, highly pigmented oil based dispersions exhibiting a low relative interfacial tension drop
    Patent number: 7300511
    Abstract: Pigment dispersions that when used in printing ink having a relative interfacial tension drop of less than 1.5, and offering an ink viscosity of less than 150 Pa.s, and containing at least 45 wt. % pigment.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: November 27, 2007
    Assignee: Sun Chemical Corporation
    Inventors: Gregory T. Huber, Tatiana N. Romanova, Russell J. Schwartz, Lisa Clapp, Terrance R. Chamberlain, Don Henderson
  • Low viscosity, highly pigmented oil based dispersions exhibiting a low relative interfacial tension drop
    Publication number: 20070000408
    Abstract: Pigment dispersions that when used in printing ink having a relative interfacial tension drop of less than 1.5, and offering an ink viscosity of less than 150 Pa·s, and containing at least 45 wt. % pigment.
    Type: Application
    Filed: July 1, 2005
    Publication date: January 4, 2007
    Inventors: Gregory Huber, Tatiana Romanova, Russell Schwartz, Lisa Clapp, Terence Chamberlain, Don Henderson
  • Concrete casting form including retractable core
    Patent number: 4790508
    Abstract: A core form is disclosed for casting a structurally reinforced concrete structure for use on a slab with an outer container form having rigid walls extending vertically comprising a casting core positioned internal the outer form and having vertically extending resilient walls defining an within contiguous core wall. The walls of the outer form and the walls of the casting core are spaced apart to define a mold cavity therebetween. A form base supported by the slab is positioned within the mold cavity to releasingly support the concrete structure to be formed and cured within the mold cavity. The walls of the casting core include an upper and lower periphery such that in use the lower periphery abuts the form base to seal the concrete internal the mold cavity relative the periphery and form base. The internal contiguous core wall is retractable to enable the placement of the reinforcing structure within the mold cavity.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: December 13, 1988
    Inventors: Don Henderson, Dirk Henderson