Patents by Inventor William G. McDougal

William G. McDougal 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).

  • Permeable breakwater
    Patent number: 5224794
    Abstract: A permeable breakwater for submerged offshore or seawall retentive installation includes a base and permeable opposed sides terminating at an upwardly projecting permeable wave wall. The breakwater is located offshore to cause moderate to heavy waves to break further offshore thereby dissipating their energy before reaching the beach.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: July 6, 1993
    Assignee: Atkinson-McDougal Corporation
    Inventors: Francis S. Atkinson, William G. McDougal
  • Permeable breakwater
    Patent number: 5174681
    Abstract: A permeable breakwater for submerged offshore or seawall retentive installation includes a base and permeable opposed sides terminating at an upwardly projecting permeable wave wall. The breakwater is located offshore to cause moderate to heavy waves to break further offshore thereby dissipating their energy before reaching the beach.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: December 29, 1992
    Assignee: Atkinson McDougal Corporation
    Inventors: Francis S. Atkinson, William G. McDougal
  • Permeable breakwater
    Patent number: 5011328
    Abstract: A permeable breakwater for submerged offshore or seawall retentive installation includes a base and permeable opposed sides terminating at an upwardly projecting permeable wave wall. The breakwater is located offshore to cause moderate to heavy waves to break further offshore thereby dissipating their energy before reaching the beach.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 30, 1991
    Inventors: Francis S. Atkinson, William G. McDougal