Patents by Inventor Donald Barwick

Donald Barwick 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: 4284438
    Abstract: A process for the production of a high strength steel rod or bar which is capable of being substantially cold drawn without any intermediate heat treatment. The steel is hot rolled in a continuous rolling mill and exits from the last stand at a temperature greater than 1000.degree. C. It is then cooled in water to an equalization temperature of between 300.degree. C. and 700.degree. C., and is immediately layed in flat overlapping non-concentric rings on a moving conveyor which allows the rod to be cooled in air as it passes along the conveyor. The rings are collected at the end of the conveyor and formed into coils.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: August 18, 1981
    Assignee: British Steel Corporation
    Inventors: Donald Barwick, Malcolm Brownlee