Patents by Inventor John Ramsbotham

John Ramsbotham 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: 6213409
    Abstract: Described is a time release fragrance sachet for air freshening, particularly for use in clothing storage cabinets. The sachets comprise a container fabricated from a substance either sufficiently porous for perfumes to pass therethrough or having openings capable of permitting fragrances to pass through the walls thereof. The sachets each contain thermoplastic particles which have contained in the interstices thereof fragrance materials. The polymer particles can be foamed particles produced using chemical blowing agents or direct gas extrusion processes. Also described are methods for fabricating such sachets and methods of using same.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: April 10, 2001
    Assignees: International Flavors & Fragances Inc., Unilever Patent Holdings B.V.
    Inventors: Craig B. Warren, John Ramsbotham, Marcel Belt
  • Patent number: 4345060
    Abstract: Diglycidyl ethers are prepared from a mixture of isomers of 1,1-bis(hydroxyphenyl)heptane. The diglycidyl ethers have low viscosity and good compatibility with aliphatic hydrocarbon solvents; they can be cured with the usual curing agents for epoxy resins, e.g., polyamines, and can be used in solventless coating compositions.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: August 17, 1982
    Assignee: Shell Oil Company
    Inventors: John Ramsbotham, Johan van Gogh
  • Patent number: 3957962
    Abstract: There is disclosed a process for the preparation of hydrogen-rich gas by passing a gas mixture containing carbon monoxide and water vapor over a sulfided catalyst which includes nickel and/or cobalt, molybdenum and aluminum with the aluminum being present in an amount of from 0.1 to 1.0 part of aluminum per part of nickel and/or cobalt on a weight basis. The catalyst is prepared by impregnating an alumina carrier with one or more solutions of compounds of the catalysts in which at least 40%w of the aluminum that is used is added to the carrier by co-impregnation with the nickel and/or cobalt.
    Type: Grant
    Filed: March 22, 1974
    Date of Patent: May 18, 1976
    Assignee: Shell Oil Company
    Inventor: John Ramsbotham
  • Patent number: 3957952
    Abstract: When copper-containing acceptors for removal of sulfur oxides out of waste gases are being prepared by impregnating an alumina-containing carrier which has been calcined at a temperature above 780.degree.C with a solution containing cations of one or more of the metals aluminum, magnesium, titanium and/or zirconium either prior to or simultaneously with the impregnation with a solution containing copper cations, the capacity of the acceptor for sulfur oxides can be substantially increased by impregnating the carrier with a solution containing cations of one or more alkali metals either subsequent to or simultaneously with the impregnation employing the solution containing aluminum, magnesium, titanium and/or zirconium cations.
    Type: Grant
    Filed: February 14, 1974
    Date of Patent: May 18, 1976
    Assignee: Shell Oil Company
    Inventors: Jaap E. Naber, John Ramsbotham