Patents by Inventor William M. Caldwell

William M. Caldwell 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).

  • Apparatus and method for isolating and securing an underwater oil wellhead and blowout preventer
    Patent number: 8887812
    Abstract: A containment system having a containment dome and a seal plate which is attached to an oil wellhead casing or riser to prevent oil spills and contamination when an oil leak occurs. The containment dome is sealed to the seal plate by a compression mechanism so that oil will not leak from the containment dome. The containment dome can provide a wellhead patch to a wellhead system wherein the wellhead patch can interface with a capping stack. Chemicals can be injected into the containment dome to prevent hydrates from forming. All aspects of controlling and operating an oil wellhead can be performed through the containment dome and seal plate, and all aspects of installation, regulation, and control of the containment dome can be performed by remote operating vehicles under water.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: November 18, 2014
    Assignee: Safestack Technology L.L.C.
    Inventors: William M. Caldwell, James P. Payne, Jr.
  • APPARATUS AND METHOD FOR ISOLATING AND SECURING AN UNDERWATER OIL WELLHEAD AND BLOWOUT PREVENTER
    Publication number: 20120160509
    Abstract: A containment system having a containment dome and a seal plate which is attached to an oil wellhead casing or riser to prevent oil spills and contamination when an oil leak occurs. The containment dome is sealed to the seal plate by a compression mechanism so that oil will not leak from the containment dome. The containment dome can provide a wellhead patch to a wellhead system wherein the wellhead patch can interface with a capping stack. Chemicals can be injected into the containment dome to prevent hydrates from forming. All aspects of controlling and operating an oil wellhead can be performed through the containment dome and seal plate, and all aspects of installation, regulation, and control of the containment dome can be performed by remote operating vehicles under water.
    Type: Application
    Filed: June 24, 2011
    Publication date: June 28, 2012
    Applicant: MJB OF MISSISSIPPI, INC.
    Inventors: William M. Caldwell, James P. Payne, JR.
  • Smoking materials
    Patent number: 4286604
    Abstract: The invention is concerned with a tobacco substitute which is made by subjecting a strand of viscose fibres to a controlled pyrolysis until the organic residue contains at least 90% carbon by weight, and loading the carbon strand with ingredients for smoking.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: September 1, 1981
    Assignee: Gallaher Limited
    Inventors: Jacques Ehretsmann, Robert D. Cowling, Alfred D. Schweizer, William M. Caldwell, Dennis F. Boyd, Robert J. Boyd