Patents by Inventor Johan Frederik Witte

Johan Frederik Witte 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).

  • Patent number: 11038522
    Abstract: An apparatus including analog-to-digital conversion (ADC) circuitry is disclosed. The apparatus includes a plurality of comparators susceptible to offset variation and a shuffler circuit configured to shuffle input sources to the respective comparators. Feedback circuitry is also included and is configured and arranged with the ADC circuitry to detect offset variation in the outputs of each comparators for the shuffled inputs, relative to outputs of the plurality of comparators and compensate for the offset variation in the comparators based on the offset differences between the respective comparators.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: June 15, 2021
    Assignee: NXP B.V.
    Inventors: Johan Frederik Witte, Lucien Johannes Breems, Robert Rutten, Muhammed Bolatkale, Johannes Hubertus Antonius Brekelmans, Shagun Bajoria, Albertus Willibrordus Oude Essink
  • Patent number: 7920032
    Abstract: An oscillator device for generating an oscillator signal, includes a heater arrangement, a first switching element, a temperature sensor, signal process means, and voltage controlled oscillator; an output of the temperature sensor being connected to an input of the signal processing means, and an output of the signal processing means being connected to an input of the voltage controlled oscillator. The first switching element is arranged for receiving the oscillator signal from the voltage controlled oscillator and for providing a heater drive signal to either a first heater element or a second heater element of the heater arrangement based on the oscillator signal. The signal processing means comprise a synchronous demodulator.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: April 5, 2011
    Assignee: Stichting voor de Technische Wetenschappen
    Inventors: Kofi Afolabi Anthony Makinwa, Johan Frederik Witte
  • Publication number: 20090212875
    Abstract: An oscillator device for generating an oscillator signal, includes a heater arrangement, a first switching element, a temperature sensor, signal process means, and voltage controlled oscillator; an output of the temperature sensor being connected to an input of the signal processing means, and an output of the signal processing means being connected to an input of the voltage controlled oscillator. The first switching element is arranged for receiving the oscillator signal from the voltage controlled oscillator and for providing a heater drive signal to either a first heater element or a second heater element of the heater arrangement based on the oscillator signal. The signal processing means comprise a synchronous demodulator.
    Type: Application
    Filed: January 30, 2006
    Publication date: August 27, 2009
    Applicant: Stichting Voor De Technische Wetenschappen
    Inventors: Kofi Afolabi Anthony Makinwa, Johan Frederik Witte
  • Patent number: 7535295
    Abstract: Chopper stabilized amplifiers combining low clock noise and linear frequency characteristics. The chopper stabilized amplifiers are used in offset correction circuitry, with the output of the chopper stabilized amplifiers being integrated by an integrator. The integrator operates on alternate cycles, with a sample and hold circuit sampling the integrator output when the integrator is not integrating, with the output of the sample and hold being coupled to the main amplification path to cancel offset after at least some amplification is achieved. Autozeroing of amplifiers in the offset correction circuitry is also disclosed. The invention is applicable to operational amplifiers and instrumentation amplifiers.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: May 19, 2009
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Johan Hendrik Huijsing, Kofi Anthony A. Makinwa, Johan Frederik Witte
  • Patent number: 4122104
    Abstract: Apparatus for extraction of oils or fats from oil containing seeds by initially reducing the material size by means of crushing rollers, thereafter heating the material, pressing same in a rotopress having a pressing chamber with decreasing cross section in the direction of the outlet and by finally subjecting the material to a solvent extraction.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: October 24, 1978
    Assignee: Stork Amsterdam B.V.
    Inventor: Johan Frederik Witte
  • Patent number: 4112836
    Abstract: Apparatus for treating oil-containing vegetable raw materials by the influence of moisture and heat, whereby during the exposure of a rather thin layer of the oil-containing raw materials to a moisture and heat transfer fluid, the raw materials are subjected to a loosening movement, preferably by means of a vibration.
    Type: Grant
    Filed: January 5, 1976
    Date of Patent: September 12, 1978
    Assignee: Stork Amsterdam B.V.
    Inventor: Johan Frederik Witte
  • Patent number: 4045879
    Abstract: Process for treating oil containing vegetable raw material by the influence of moisture and heat, whereby during the exposure of a rather thin layer of the oil containing raw materials to a moisture and heat transfer fluid, the raw materials are subjected to a loosening movement by means of a vibration having a substantial vertical component. The frequency of the vibration is 200 - 400 and the vertical amplitude 10 to 40 mm.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: September 6, 1977
    Assignee: Stork Amsterdam B.V.
    Inventor: Johan Frederik Witte
  • Patent number: 4024288
    Abstract: A method for treating finely divided materials with a treatment fluid (steam), particularly for conditioning oil containing vegetable raw materials in which one or more vibratory conveyors with a perforated bottom has treatment fluid introduced through at least one inlet opening under the perforated bottom. The larger particles formed by clotting during the action of the treatment fluid are pulverized by pulverizing members and an additional perforated plate. The conditioned materials are dried in hot air.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: May 17, 1977
    Inventor: Johan Frederik Witte
  • Patent number: 3972278
    Abstract: Device for treating finely divided materials with a treatment fluid, particularly for conditioning oil containing vegetable raw materials, comprising one or more vibratory conveyors with a perforated bottom and at least one inlet opening under a perforated bottom for introducing a treatment fluid. The device is provided with pulverizing members and an additional perforated plate for pulverizing the greater particles formed by clotting during the action of the treatment fluid.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: August 3, 1976
    Assignee: Stork Amsterdam B.V.
    Inventor: Johan Frederik Witte