Patents by Inventor Robert N. Wilson

Robert N. Wilson 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: 5876201
    Abstract: The invention provides exemplary devices and methods which are useful in treating an oral cavity. In one exemplary embodiment, a nozzle is provided which is adapted for attachment to a hand piece of a dental tool. The nozzle comprises an elongate body having a proximal end, a distal end, and at least one lumen extending between the proximal end and the distal end. The proximal end is adapted for attachment to the hand piece while the distal end is flared to facilitate manipulation of a body part.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: March 2, 1999
    Inventors: Audrey J. Wilson, Robert N. Wilson
  • Patent number: 5840780
    Abstract: A foamed isocyanate-based polymer having a cellular structure and comprising a non-surface cross-linked superabsorbent polymer, the foamed polymer being capable of: (i) absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 10 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent polymer. A process for producing the foamed isocyanate-based polymer is also described. The process comprises the steps of: contacting an isocyanate, an active hydrogen-containing compound, an aqueous blowing agent, a catalyst and a non-surface cross-linked superabsorbent polymer, the superabsorbent polymer being capable of absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: November 24, 1998
    Assignee: Woodbridge Foam Corporation
    Inventor: Robert N. Wilson
  • Patent number: 5817703
    Abstract: A rebond foam comprising a plurality of isocyanate-based polymeric foam pieces bonded to one another with an isocyanate-based binder is disclosed. A superabsorbent material is comprised in one or both of the isocyanate-based polymeric foam pieces and the isocyanate-based binder. The rebond foam is capable of: (i) absorbing at least about 5 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 5 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent material. A process for producing a rebond foam is also disclosed.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: October 6, 1998
    Assignee: Woodbridge Foam Corporation
    Inventors: G. Ronald Blair, Harold R. Attfield, Robert N. Wilson
  • Patent number: 5744509
    Abstract: A foamed isocyanate-based polymer having a cellular structure and comprising a superabsorbent material, the polymer being capable of: (i) absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 10 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent material, the cellular structure having a cell size of at least about 30 cells/inch when measured pursuant to ASTM D3576-77. A process for producing the foamed isocyanate-based polymer is also described. The process comprises the steps of: contacting an isocyanate, an active hydrogen-containing compound, an aqueous blowing agent, a catalyst and a superabsorbent material, the superabsorbent material being capable of absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: April 28, 1998
    Assignee: Woodbridge Foam Corporation
    Inventors: Robert N. Wilson, G. Ronald Blair
  • Patent number: 5719201
    Abstract: A foamed isocyanate-based polymer having a cellular structure and containing a superabsorbent material, the polymer being capable of: (i) absorbing at least about 20 times its weight of an aqueous fluid maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 20 times its weight of absorbed aqueous fluid which is bound to the superabsorbent material. A process for producing a foamed isocyanate-based polymer comprising the steps of: providing a substantially uniform mixture comprising an isocyanate, an active hydrogen-containing compound and a superabsorbent material, the superabsorbent material being capable of absorbing at least about 20 times its weight of an aqueous fluid maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: February 17, 1998
    Assignee: Woodbridge Foam Corporation
    Inventor: Robert N. Wilson
  • Patent number: 5674917
    Abstract: A foamed isocyanate-based polymer having a cellular structure and containing a superabsorbent material, the polymer being capable of: (i) absorbing at least about 20 times its weight of an aqueous fluid maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 20 times its weight of absorbed aqueous fluid which is bound to the superabsorbent material. A process for producing a foamed isocyanate-based polymer comprising the steps of: providing a substantially uniform mixture comprising an isocyanate, an active hydrogen-containing compound and a superabsorbent material, the superabsorbent material being capable of absorbing at least about 20 times its weight of an aqueous fluid maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: October 7, 1997
    Assignee: Woodbridge Foam Corporation
    Inventor: Robert N. Wilson
  • Patent number: 5624971
    Abstract: A foamed isocyanate-based polymer having a cellular structure and comprising a non-surface cross-linked superabsorbent polymer, the foamed polymer being capable of: (i) absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature of from about 20.degree. to about 25.degree. C., and (ii) retaining at least about 10 times its weight of absorbed aqueous NaCl solution which is bound to the superabsorbent polymer. A process for producing the foamed isocyanate-based polymer is also described. The process comprises the steps of: contacting an isocyanate, an active hydrogen-containing compound, an aqueous blowing agent, a catalyst and a non-surface cross-linked superabsorbent polymer, the superabsorbent polymer being capable of absorbing at least about 10 times its weight of a 0.9 wt./wt. % aqueous NaCl solution maintained at a temperature in the range of from about 20.degree. to about 25.degree. C.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: April 29, 1997
    Assignee: Woodbridge Foam Corporation
    Inventor: Robert N. Wilson
  • Patent number: 4156522
    Abstract: There is disclosed herein a capital for use in joining a rail to an upright column in a building structure, such as a balustrading system, which capital includes a lower portion having a passage therein to receive in press-fitting engagement the upper end of the column, and an upper portion on opposite sides of which protrusions are provided which are engaged on their undersides by opposed inwardly directed flanges of the rail. The protrusions taper inwardly and upwardly such that the rail can be forced over the protrusions with the flanges being temporarily flexed outwardly to thereafter engage beneath the protrusions. The undersides of the protrusions are curved to allow the rail to adopt any desired angular orientation with respect to the column, while the protrusions are also tapered towards the sides of the capital to allow for some limited adjustment in the horizontal plane.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: May 29, 1979
    Assignee: Syzygy Pty. Ltd.
    Inventors: Gerald L. Snowden, Robert N. Wilson