Patents by Inventor Hendrik Jan De Graaf

Hendrik Jan De Graaf 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: 11911687
    Abstract: This invention relates to an improved wheel arrangement of an inline skate for improving turning capability. In this wheel arrangement, the front wheel and rear wheel and any middle wheels are disposed along a straight line that makes an acute angle with the rolling direction and with the wheels being arranged such that they are part of a substantially inverted V-shape seen in front or rear plan view. Subject of the invention are a frame, a wheel assembly, combinations of left and right frames and wheel assemblies, inline skates, a method for retrofitting a prior art frame and a replacement mount for use in such a method.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: February 27, 2024
    Assignee: Railway Inventions Europe Limited
    Inventor: Hendrik Jan De Graaf
  • Publication number: 20220226717
    Abstract: This invention relates to an improved wheel arrangement of an inline skate for improving turning capability. In this wheel arrangement, the front wheel and rear wheel and any middle wheels are disposed along a straight line that makes an acute angle with the rolling direction and with the wheels being arranged such that they are part of a substantially inverted V-shape seen in front or rear plan view. Subject of the invention are a frame, a wheel assembly, combinations of left and right frames and wheel assemblies, inline skates, a method for retrofitting a prior art frame and a replacement mount for use in such a method.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 21, 2022
    Inventor: Hendrik Jan De Graaf
  • Patent number: 10031132
    Abstract: The invention relates to a method and a device for the detection of magnetic particles (1) in a sample chamber (112). After introduction of the sample into said sample chamber (112), the magnetic particles (1) are first retained within the sample chamber (112) and kept away from the sensing surface (111) by an appropriate magnetic field (B) to allow for an incubation of the sample with reagents. A reference measurement may be made during this incubation period (TI), preferably at the end thereof. After incubation, the magnetic particles (1) are allowed to contact the sensing surface (111) where a target measurement can be conducted.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 24, 2018
    Assignee: Minicare B.V.
    Inventors: Sytske Foppen, Bernardus Jozef Maria Beerling, Willemina Maria Huijnen-Keur, Hendrik Jan De Graaf, Danielle Walthera Maria Kemper-Van De Wiel, Roland Antonius Johannes Gerardus Smits, Albert Hendrik Jan Immink, Femke Karina De Theije, Wendela Meertens
  • Publication number: 20140329335
    Abstract: The invention relates to a method and a device for the detection of magnetic particles (1) in a sample chamber (112). After introduction of the sample into said sample chamber (112), the magnetic particles (1) are first retained within the sample chamber (112) and kept away from the sensing surface (111) by an appropriate magnetic field (B) to allow for an incubation of the sample with reagents. A reference measurement may be made during this incubation period (TI), preferably at the end thereof. After incubation, the magnetic particles (1) are allowed to contact the sensing surface (111) where a target measurement can be conducted.
    Type: Application
    Filed: October 5, 2012
    Publication date: November 6, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Sytske Foppen, Bernardus Jozef Maria Beerling, Willemina Maria Huijnen-Keur, Hendrik Jan De Graaf, Danielle Walthera Maria Kemper-Van De Wiel, Roland Antonius Johannes Gerardus Smits, Albert Hendrik Jan Immink, Femke Karina De Theije, Wendela Meertens
  • Publication number: 20140323856
    Abstract: A system for providing sensory feedback includes a garment (106) that is configured to flexibly and snuggly fit over a portion of a subject. The garment includes one or more sensors (104) disposed therein to monitor activity of the subject or monitor points of interest of the subject. An interpretation module (115) is coupled with the sensors to receive sensor signals and interpret the sensor signals to determine if conditions are met to provide feedback signals to the garment. A feedback modality (108) is incorporated into the garment and is responsive to the feedback signals such that the feedback modality emits energy from the garment to provide sensory information to assist a physician during a procedure.
    Type: Application
    Filed: October 19, 2012
    Publication date: October 30, 2014
    Inventors: Sytske Foppen, Bernardus Jozef Maria Beerling, Willemina Maria Huijnen-Keur, Hendrik Jan De Graaf, Danielle Walthera Maria Kemper-Van De Wiel, Roland Antonius Johannes Gerardus Smits, Albert Hendrik Jan Immink, Femke Karina De Theije, Wendela Meertens