Patents by Inventor John L. Nicholson

John L. Nicholson 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).

  • Sewage treatment biological rotors
    Patent number: 4692241
    Abstract: A biological rotor for biomass treatment in a sewage treatment plant is erected from sector shaped packs removably attached between spider-like support assemblies each of which comprises a ring and radial channel-shaped arms. The packs include support members. One of the support members has its ends located in the channels of the arms and the other support members are clamped to the ring. A separator plate can be built up from sections formed in each pack.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: September 8, 1987
    Assignee: Klargester Environmental Engineering Ltd.
    Inventor: John L. Nicholson