Patents by Inventor Douglas A. Robertson

Douglas A. Robertson 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).

  • Publication number: 20050019045
    Abstract: A method for providing a virtual replenishing of a supply item with an imaging substance includes the steps communicating to a database a first serial number associated with a first supply item; comparing the first serial number with a plurality of serial numbers stored in the database; receiving from the database one of a first data indicating non-correspondence between the first serial number with one of the plurality of serial numbers and a second data indicating correspondence between the first serial number with one of the plurality of serial numbers, wherein the second data includes a verification key; and if the verification key corresponds to the first key stored in the memory associated with the first supply item, then performing the step of allocating at least a portion of a surplus amount of the imaging substance contained in the first supply item for use.
    Type: Application
    Filed: July 23, 2003
    Publication date: January 27, 2005
    Inventors: Christopher Adkins, Douglas Robertson, David Stevenson, Barry Stout
  • Publication number: 20050012966
    Abstract: A method for compiling, in a memory of a facsimile machine, at least one listing of telephone numbers or partial telephone numbers corresponding to authorized senders, or unauthorized senders, or both authorized and unauthorized senders.
    Type: Application
    Filed: July 14, 2003
    Publication date: January 20, 2005
    Inventors: Shirley Mitchell, Brian Owens, Steven Rice, Douglas Robertson, Brandon Shields
  • Publication number: 20050000337
    Abstract: An apparatus for perforating a sheet of media includes a perforation forming mechanism including at least one perforation device. The perforation forming mechanism is configured to drive the perforation device through the sheet of media to extend through the sheet of media by a distance.
    Type: Application
    Filed: July 2, 2003
    Publication date: January 6, 2005
    Inventors: Adam Ahne, William Connors, Mark Edwards, William Goff, Brian Owens, Ricky Robbins, Douglas Robertson
  • Publication number: 20040214086
    Abstract: There is provided a manganese oxide material, wherein the material comprises a host material QqMnyMzOx, where Q and M are each any element, y is any number greater than zero, and q and z are each any number greater than or equal to zero, and at least one dopant substituted into the host material, the manganese oxide material having a layered structure in which the ions are arranged in a series of generally planar layers, or sheets, stacked one on top of another. In a particularly preferred material Q is Li and M is either Co, Ni, Al, or Li. Particularly preferred combinations of M and a dopant are Ni,Co; Al,Co; Li,Cu; Li,Al; and Li,Zn. A method of preparing the material is also disclosed.
    Type: Application
    Filed: June 4, 2004
    Publication date: October 28, 2004
    Inventors: Peter George Bruce, Alastair Douglas Robertson
  • Patent number: 6402797
    Abstract: This invention provides a fuel oil composition comprising a major amount of a fuel oil and a minor amount of an additive comprising at least one fuel oil-soluble alkyl or alkoxy aromatic compound wherein at last one group independently selected from alkyl and alkoxy groups of 1 to 30 carbon atoms is attached to an aromatic nucleus and at least one carboxyl group and optionally one or two hydroxyl groups are attached to the aromatic nucleus; a process for the preparation of such a fuel oil composition; and the use of such a fuel oil composition as fuel in a compression-ignition engine for controlling wear rate in the fuel injection system thereof.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: June 11, 2002
    Assignee: Shell Oil Company
    Inventors: Jian Lin, Struan Douglas Robertson
  • Patent number: 5997592
    Abstract: This invention provides a fuel oil composition comprising a major amount of a fuel oil and a minor amount of an additive comprising at least one fuel oil-soluble alkyl or alkoxy aromatic compound wherein at least one group independently selected from alkyl and alkoxy groups of 1 to 30 carbon atoms is attached to an aromatic nucleus and at least one carboxyl group and optionally one or two hydroxyl groups are attached to the aromatic nucleus; a process for the preparation of such a fuel oil composition; and the use of such a fuel oil composition as fuel in a compression-ignition engine for controlling wear rate in the fuel injection system thereof.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: December 7, 1999
    Assignee: Shell Oil Company
    Inventors: Jian Lin, Struan Douglas Robertson
  • Patent number: 4038445
    Abstract: Microcapsule coated sheet material for use in pressure sensitive copying systems is produced by a method which comprises forming an aqueous coating composition containing microcapsules, particulate stilt material and a biner, foaming the coating composition, applying the foamed composition to a web of sheet material, and metering the composition on the web to a desired coating weight by means of a metering member, for example a blade which preferably is flexible, in contact with the coating composition on the web. The foamed composition is preferably applied to the web by means of a fountain applicator.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: July 26, 1977
    Assignee: Wiggins Teape Limited
    Inventor: Neil George Douglas Robertson
  • Patent number: 3938782
    Abstract: Apparatus for producing a foamed fibre dispersion for deposition on the foraminous support of a machine for manufacturing non-woven fibrous material includes an outlet manifold closed except for an outlet from which foamed fibre dispersion issues for deposition on the foraminous support, as well as a plurality of input openings, an inlet manifold closed except for an inlet through which the apparatus is supplied with dispersion to be foamed, and a plurality of outlet openings. A plurality of closed foam-forming pipes each effect communication between an individual one of the inlet manifold outlets and an individual one of the outlet manifold inlet openings. Each foam-forming pipe includes at least one internal region defined by zones of alternately decreasing and increasing cross section so as to establish cross sectional restriction to increase the speed of flow of dispersion, thereby to create in the foam-forming pipe turbulence to effect foaming of the dispersion.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: February 17, 1976
    Assignee: Wiggins Teape Research & Development Limited
    Inventor: Neil George Douglas Robertson