Patents by Inventor Richard Purgason

Richard Purgason 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).

  • Method of raising fish by use of algal turf
    Patent number: 5778823
    Abstract: A method of producing mature fish using an algal turf as feedstock. The method consists of first growing an algal turf in a growth reservoir while subjecting the turf to an oscillatory water surge; severing the algal turf from its growing surface and transferring the severed algal turf to a second vessel containing young fish. In an optional embodiment, water enriched in oxygen may be removed from the growth reservoir and recycled to the second vessel. Further, at least a portion of the metabolic and respiratory waste products of the fish may be transferred to a growth reservoir containing algal turf.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: July 14, 1998
    Assignee: Aquatic BioEnhancement Systems
    Inventors: Walter H. Adey, Richard Purgason
  • Animal feedstocks comprising harvested algal turf and a method of preparing and using the same
    Patent number: 5715774
    Abstract: A high proteinaceous animal feedstock comprises algae having a solids content between from about 6 to about 95 weight percent. The feedstock is typically prepared by harvesting at least a portion of algal turf from its growing surface and removing water from the severed algal turf until the solids content of the severed algal turf is between from about 6 to about 95 weight percent.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: February 10, 1998
    Assignee: Aquatic BioEnhancement Systems
    Inventors: Walter H. Adey, Richard Purgason