Patents Assigned to National Force Company
  • Pressure vessel construction and method
    Patent number: 4093100
    Abstract: A pressure vessel with an alloyed steel wall and having at least one ring of weldable steel secured thereon and wherein a temperature control jacket associated with said vessel is welded to said ring.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: June 6, 1978
    Assignees: National Force Company, Societe Chimique des Charbonnages-CDF Chimie
    Inventors: Hugh Ford, George J. Mraz, Jean Noel Simier