Patents by Inventor William John Nicholson

William John Nicholson 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).

  • Biocidal and agrochemical suspensions
    Patent number: 6200586
    Abstract: A suspension comprising an aqueous structured surfactant having suspended therein particles or droplets of a substantially water insoluble or sparingly soluble biocidal or agrochemical active substance in a weight ratio of total surfactant to said active substance of less than 20:1.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: March 13, 2001
    Assignee: Albright & Wilson Limited
    Inventors: Alan James Lambie, Brian John Akred, William John Nicholson, Jill Elizabeth Newton
  • Method of preparing a drilling fluid comprising structured surfactants
    Patent number: 6166095
    Abstract: A pourable aqueous composition for use as, or for dilution to form, a drilling mud comprises a least 2% by weight of a water soluble polyvalent metal salt of an alkyl polyoxyalkylene sulphuric or carboxylic acid, and at least 1% by weight of a corresponding salt of an alkyl benzene sulphuric acid, preferably in the presence of a water soluble inorganic salt or base of said polyvalent metal.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: December 26, 2000
    Assignee: Albright & Wilson UK Limited
    Inventors: Edward Bryan, Boyd William Grover, William John Nicholson
  • Functional fluids and liquid cleaning compositions and suspending media
    Patent number: 5964692
    Abstract: Aqueous structured surfactants, e.g., lamellar, or preferably spherulitic systems optionally containing suspended solids are used as functional fluids, such as drilling fluids, cutting fluids, hydraulic fluids, heat transfer fluids, construction muds and lubricants. A composition consisting essentially of: water; a surfactant or mixture of surfactants present in a concentration sufficient to form a mobile spherulitic or dispersed lamellar phase in the absence of an electrolyte; and a substantially water insoluble functional material, suspended in the composition, the composition being substantially free from electrolyte.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 12, 1999
    Assignee: Albright & Wilson Limited
    Inventors: Michael Blezard, Michael John Williams, Boyd William Grover, William John Nicholson, Edward Tunstall Messenger, John Hawkins
  • Functional fluids and liquid cleaning compositions and suspending media
    Patent number: 5807810
    Abstract: Aqueous structured surfactants, e.g., lamellar, or preferably spherulitic systems optionally containing suspended solids are used as functional fluids, such as drilling fluids, cutting fluids, hydraulic fluids, heat transfer fluids, construction muds and lubricants. A composition consisting essentially of: water; a surfactant or mixture of surfactants present in a concentration sufficient to form a mobile spherulitic or dispersed lamellar phase in the absence of an electrolyte; and a substantially water insoluble functional material, suspended in the composition, the composition being substantially free from electrolyte.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: September 15, 1998
    Assignee: Albright & Wilson Limited
    Inventors: Michael Blezard, Michael John Williams, Boyd William Grover, William John Nicholson, Edward Tunstall Messenger