Patents by Inventor John W. J. Bugg

John W. J. Bugg 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).

  • Alkali metal silicate solutions and method of forming foundry products using the solutions
    Patent number: 4552202
    Abstract: Aqueous alkali metal silicate solutions are made by dissolving an alkali silica powder that includes insoluble impurities and putting the impurities into stable suspension with a suspending agent such as a cellulose derivative. When used as a foundry binder the solutions give improved early strength and improved breakdown properties.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: November 12, 1985
    Assignee: The White Sea & Baltic Company Limited
    Inventors: John W. J. Bugg, Stephen Houlden
  • Method for making foundry moulds and cores utilizing a gas catalyst
    Patent number: 3938578
    Abstract: Foundry moulds or cores are made by putting a mixture of foundry sand and acid-hardenable binder into a mould or core box, hardening the binder by passing an acidic gas through the mixture, removing the mould or core from the box and applying to its surface a material which will neutralise or adsorb acidic gases. The neutralising or adsorbent material permits avoidance of the health hazard of emission of acidic gas from the mould or core on storage or during use.
    Type: Grant
    Filed: February 13, 1974
    Date of Patent: February 17, 1976
    Assignee: The White Sea & Baltic Company Limited
    Inventors: David Epstein, Leslie A. Watkins, John W. J. Bugg