Patents by Inventor David E. Bell

David E. Bell 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: 7763111
    Abstract: In various embodiments, a pigment composition is provided comprising a base particle and a dispersing agent, the dispersing agent comprising a salt and/or ester of: (i) an amine, alcohol, and/or alkanol amine and (ii) a polyprotic acid, wherein the mole ratio of the amine, alcohol, and/or alkanol amine to the polyprotic acid is greater than 3:1. In various embodiments, the pigments have improved stability, hiding power, tint strength, and/or gloss.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: July 27, 2010
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Modasser El-Shoubary, Robert M. Hopkins, Karen L. Bowen, David E. Bell
  • Patent number: 7261770
    Abstract: In various embodiments, a pigment composition is provided comprising a base particle and a dispersing agent, the dispersing agent comprising a salt and/or ester of: (i) an amine, alcohol, and/or alkanol amine and (ii) a polyprotic acid, wherein the mole ratio of the amine, alcohol, and/or alkanol amine to the polyprotic acid is greater than 3:1. In various embodiments, the pigments have improved stability, hiding power, tint strength, and/or gloss.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: August 28, 2007
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Modasser El-Shoubary, Robert M. Hopkins, Karen L. Bowen, David E. Bell
  • Patent number: 4635889
    Abstract: A drapery support rod assembly including opposed support brackets for supporting the rod at a predetermined distance with respect to a vertical wall and giving the appearance of a continuous rod section extending from the wall at each end. Opposed elongated channel shaped bracket members, inner cover members and outer cover members are preassembled by a threaded fastener and secured to the rod section by tang portions of the bracket members for securing the bracket assemblies to the rod section. The bracket assemblies may be loosely secured, one part to the others and secured to the rod section and then assembled to the wall brackets by a push-on operation. The wall brackets include generally horizontally projecting arm portions with elongated slots formed therein for receiving the assembly of the channel shaped bracket member and the inner cover part.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: January 13, 1987
    Assignee: Cooper Industries
    Inventors: David E. Bell, Dennis G. Babbs
  • Patent number: 3992750
    Abstract: Combined pulley housing and end gate construction for a traverse rod. For application to a slotted traverse rod, there is provided a pulley housing receivable and fastenable within such traverse rod. Said pulley housing is arranged for the support of cord pulleys in any desired manner and arrangement. Said pulley housing also supports a gate which positions drapery supporting means at the end of the rod and closes the slot to prevent the escape of hangers positioned therewithin when the drapery is retracted. The gate is preferably mounted for pivoting on an axis substantially transverse to the slot and in one embodiment contains a pocket which fits over the end hanger for holding it in a predetermined position in said slot and with respect to the rod.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: November 23, 1976
    Assignee: Kirsch Company
    Inventors: James A. Ford, David E. Bell
  • Patent number: D301305
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: May 30, 1989
    Assignee: Cooper Industries, Inc.
    Inventors: David E. Bell, Dennis G. Babbs