Patents by Inventor William P. Marsland

William P. Marsland 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).

  • System and method for removing ammonia from wastewater
    Patent number: 4370234
    Abstract: A method and apparatus for treating wastewater containing ammonia by passing the wastewater over a bed of ion exchange particles capable of exchanging ammonium and having a growth of nitrifying bacteria thereon. The wastewater is preferably first oxygenated and then passed through a biological filter, a solids filter, and an organic filter before reaching the ion exchange particles.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: January 25, 1983
    Inventor: William P. Marsland
  • Equine parasiticide paste
    Patent number: 4141975
    Abstract: Semi-solid preparation useful as a boticide and anthelmintic in horses and comprising an effective amount of trichlorfon dispersed in a mineral oil.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: February 27, 1979
    Assignee: Cutter Laboratories, Inc.
    Inventors: John C. Gay, William P. Marsland
  • Apple tree
    Patent number: PP4900
    Abstract: An apple tree which is more open growing with wider crotch angles, developing a heavy fruit spur system throughout the entire tree, fruit production tending to commence on the previous year's growth rather than older wood, this characteristic being especially true in young trees, thus emphasizing open growing, the fruit exhibiting a full bright red color, less prominent dots, and much more waxy skin texture that resists cracking, than the usual and known Stayman apple trees.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: October 26, 1982
    Inventor: William P. Marsland