Patents by Inventor Fred F. Cheng

Fred F. Cheng 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).

  • Fish culture by sucker, stickleback, carp and bullhead catfish eradication
    Patent number: 4395969
    Abstract: Control of stickleback, sucker, carp and bullhead catfish is accomplished by adding to their aqueous habitat a compound containing diethyl esters of phosphoric, phosphorous, thiophosphonic and thiophosphorous acid that contain a chloride or a chlorinated or vinyl group.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: August 2, 1983
    Assignee: College of Forestry, Wildlife & Range Sciences, University of Idaho
    Inventors: Fred F. Cheng, Craig MacPhee
  • Fish culture by stickleback population eradication
    Patent number: 4221782
    Abstract: Control of stickleback in streams and other locales is achieved by selective addition of chemicals that form free azide radicals in water, specifically sodium azide and potassium azide. Subsequent deactivation, when desired, is achieved by addition of calcium compounds. High selectively to stickleback can be achieved with minimal risk to desirable game fish in the salmon and trout groups.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: September 9, 1980
    Assignee: Idaho Research Foundation, Inc.
    Inventors: Craig MacPhee, Fred F. Cheng
  • Fishing lure
    Patent number: 4133134
    Abstract: A fishing lure comprising an elongated hollow tube which holds a supply of water-soluble scented bait for attracting fish. The tube is rotatably mounted about an elongated coaxial spinner shaft which protrudes outward from both ends of the tube. The tube is free to rotate relative to the shaft. Axial flow of water is achieved through the tube for release of soluble bait material while fishing.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: January 9, 1979
    Inventor: Fred F. Cheng