Patents by Inventor Jonathan P. Worsfold

Jonathan P. Worsfold 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).

  • Cryogenic treatment methods
    Patent number: 5179840
    Abstract: An article such as a mattress, carpet or curtain is treated by spraying its surface with liquid cryogen (usually liquid nitrogen). The liquid nitrogen acts as an acaricide and kills house dust mites. The dead mites are then removed from the freshly sprayed fabric. Such a treatment is also effective in dislodging particles of dirt from the articles and may be used for example to clean a carpet in situ. After treatment with the liquid nitrogen, the carpet may be subjected to a conventional vacuum cleaning.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: January 19, 1993
    Assignee: The BOC Group plc
    Inventor: Jonathan P. Worsfold
  • Apparatus for producing fog
    Patent number: 5156333
    Abstract: A method of producing a breathable fog comprises (a) passing air through a dryer unit to remove moisture; (b) cooling the dried air to a temperature below 0.degree. C.; and (c) inducing water vapor into the dried and cooled air to produce breathable fog.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: October 20, 1992
    Assignee: The BOC Group plc
    Inventor: Jonathan P. Worsfold