Patents by Inventor John Leonard Metcalfe

John Leonard Metcalfe 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).

  • Product for treating fabric
    Patent number: 4014432
    Abstract: A product for treating, e.g. softening, fabric in a tumble drier has a perforated membrane and means for generating pressure in the product to cause a conditioning agent to exude through the perforations onto the surface of the product where it is removed for application to the fabric. The pressure may be caused by using a heat-shrinkable or a stretched elastomeric membrane and the product is preferably attached inside the drier.
    Type: Grant
    Filed: April 2, 1976
    Date of Patent: March 29, 1977
    Assignee: Lever Brothers Company
    Inventors: George Ernest Clothier, Robert Lewis Davies, John Albert Hockey, John Leonard Metcalfe
  • Product for the treatment of cellulosic fabrics
    Patent number: 3933274
    Abstract: A product adapted for the treatment of cellulosic fabric comprises a container having at least two compartments for holding two or more fluent substances separate from one another but adapted for dispensing the substances simultaneously, and having in one compartment a resin precondensate and in another compartment a latent acid catalyst. The product is used to make aqueous solutions of both resin precondensates and latent acid catalysts for fabric treatment, whilst keeping the ingredients separate until required for use.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: January 20, 1976
    Assignee: Lever Brothers Company
    Inventors: Stuart Albert Emmons, John Leonard Metcalfe, John Winston Potts