Patents by Inventor George Weeden

George Weeden 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).

  • Publication number: 20230083539
    Abstract: Methods and systems are provided to improve consistency and robustness in chromatography, for example, in operations of multi-column chromatography systems.
    Type: Application
    Filed: September 13, 2022
    Publication date: March 16, 2023
    Inventors: Eranda Puwakkatiya Kankanam, George Weeden, Jr.
  • Patent number: 8517793
    Abstract: This invention discloses a bee nest for protecting bees from the environment. The bee nest has desiccating and insulating properties, as well as properties that repulse and deter varrora destructor mites. The bee nest comprises a housing having a first open end and a second open end. The first open end is covered by a first end plate which has ventilation means for the housing. A second end plate encloses the second end. Within the housing, there are a plurality of elongate conduits or tubes. Surrounding the plurality of elongate conduits is filler medium, such as crushed volcanic rock filler. Optionally essential oils to deter mites are distributed on the rock filler.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: August 27, 2013
    Inventor: Robert George Weeden
  • Publication number: 20120302131
    Abstract: This invention discloses a bee nest for protecting bees from the environment. The bee nest has desiccating and insulating properties, as well as properties that repulse and deter varrora destructor mites. The bee nest comprises a housing having a first open end and a second open end. The first open end is covered by a first end plate which has ventilation means for the housing. A second end plate encloses the second end. Within the housing, there are a plurality of elongate conduits or tubes. Surrounding the plurality of elongate conduits is filler medium, such as crushed volcanic rock filler. Optionally essential oils to deter mites are distributed on the rock filler.
    Type: Application
    Filed: May 26, 2011
    Publication date: November 29, 2012
    Inventor: Robert George Weeden
  • Patent number: 4219780
    Abstract: Apparatus for controlling the gains of a pair of gain-matched amplifiers includes means for applying to each amplifier a pilot tone in the form of an exponentially-decaying periodic signal. The apparatus also includes three control loops, one for comparing the output of one amplifier with a reference signal to derive an error signal used to control the amplifier gains when the pilot tone is absent, and a second for controlling the gains when the pilot tone is present. The third loop subtracts the outputs of the two amplifiers and uses the resulting error signal in conjunction with one or other of the signals from the other two loops to control the gain of one of the two amplifiers.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: August 26, 1980
    Assignee: Ferranti Limited
    Inventors: John F. Roulston, George Weeden