Patents by Inventor Jan A. de Graaf

Jan A. 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: 12222074
    Abstract: The present invention relates to an LED filament (10), comprising: a first LED filament portion (12a) comprising a plurality of first LEDs (14a) adapted to emit first LED filament light: a second LED filament portion (12b) parallel to the first LED filament portion (12a) and comprising a plurality of second LEDs (14b) adapted to emit second LED filament light: and at least one light-blocking wall (26) arranged between the first and second LED filament portions to reduce or prevent optical cross-talk between the first and second LEDs.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: February 11, 2025
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Grigory Alexandrovich Onushkin, Aldegonda Lucia Weijers, Jan De Graaf
  • Patent number: 12196376
    Abstract: The invention provides a light generating system (1000) comprising one or more light generating devices (100), a lightguide element (500), a reflector (410), and optionally a light transmissive envelope (600), wherein: (A) the one or more light generating devices (100) are configured to generate device light (101); (B) the lightguide element (500) comprises a light transmissive body (510) comprising light transmissive material (502), which is light transmissive for the device light (101); wherein the light transmissive body (510) comprises an axis of elongation (501) and a body length (L1), wherein the light transmissive body (510) comprises a first end (511) and a second end (512); wherein the light transmissive body (510) comprises (i) a first outer face (521), comprised by the first end (511), (ii) a second outer face (522), comprised by the second end (512), and (iii) an external side face (523) bridging a distance between the first outer face (521) and the second outer face (521) and having a distance (d
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: January 14, 2025
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Johannes Petrus Maria Ansems, Jan De Graaf, Michal Jan Horaczek, Wessel Peter Deurwaarder
  • Publication number: 20240337355
    Abstract: The invention provides a light generating system (1000) comprising one or more light generating devices (100), a lightguide element (500), a reflector (410), and optionally a light transmissive envelope (600), wherein: (A) the one or more light generating devices (100) are configured to generate device light (101); (B) the lightguide element (500) comprises a light transmissive body (510) comprising light transmissive material (502), which is light transmissive for the device light (101); wherein the light transmissive body (510) comprises an axis of elongation (501) and a body length (L1), wherein the light transmissive body (510) comprises a first end (511) and a second end (512); wherein the light transmissive body (510) comprises (i) a first outer face (521), comprised by the first end (511), (ii) a second outer face (522), comprised by the second end (512), and (iii) an external side face (523) bridging a distance between the first outer face (521) and the second outer face (521) and having a distance (d
    Type: Application
    Filed: November 21, 2022
    Publication date: October 10, 2024
    Inventors: JOHANNES PETRUS MARIA ANSEMS, JAN DE GRAAF, MICHAL JAN HORACZEK, WESSEL PETER DEURWAARDER
  • Patent number: 12092271
    Abstract: The invention provides an LED filament device (1000) comprising (i) a first LED filament side (1110), (ii) a second LED filament side (1120), (iii) an intermediate layer (440), and (iv) a plurality of sources of light (100), wherein: (a) first sources of light (110) are configured to generate first white light (111) having a first correlated color temperature CCT1; wherein the first sources of light (110) are associated to the first filament side (1110); (b) second sources of light (120) are configured to generate second white light (121) having a second correlated color temperature CCT2; wherein the second sources of light (120) are associated to the first filament side (1110); wherein CCT2?CCT1?500 K; (c) third sources of light (130) are configured to generate blue third light (131); wherein the third sources of light (130) are associated to the second filament side (1120); (d) fourth sources of light (140) are configured to generate green fourth light (141); wherein the fourth sources of light (140) are as
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: September 17, 2024
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Martinus Arnoldus Cornelis Heijmans, Jan De Graaf, Aldegonda Lucia Weijers, Eric Cornelis Egbertus Van Grunsven
  • Publication number: 20240230037
    Abstract: The present invention relates to an LED filament (10), comprising: a first LED filament portion (12a) comprising a plurality of first LEDs (14a) adapted to emit first LED filament light: a second LED filament portion (12b) parallel to the first LED filament portion (12a) and comprising a plurality of second LEDs (14b) adapted to emit second LED filament light: and at least one light-blocking wall (26) arranged between the first and second LED filament portions to reduce or prevent optical cross-talk between the first and second LEDs.
    Type: Application
    Filed: April 28, 2022
    Publication date: July 11, 2024
    Inventors: GRIGORY ALEXANDROVICH ONUSHKIN, ALDEGONDA LUCIA WEIJERS, JAN DE GRAAF
  • Publication number: 20240183501
    Abstract: The invention provides an LED filament device (1000) comprising (i) a first LED filament side (1110), (ii) a second LED filament side (1120), (iii) an intermediate layer (440), and (iv) a plurality of sources of light (100), wherein: (a) first sources of light (110) are configured to generate first white light (111) having a first correlated color temperature CCT1; wherein the first sources of light (110) are associated to the first filament side (1110); (b) second sources of light (120) are configured to generate second white light (121) having a second correlated color temperature CCT2; wherein the second sources of light (120) are associated to the first filament side (1110); wherein CCT2-CCT1?500 K; (c) third sources of light (130) are configured to generate blue third light (131); wherein the third sources of light (130) are associated to the second filament side (1120); (d) fourth sources of light (140) are configured to generate green fourth light (141); wherein the fourth sources of light (140) are as
    Type: Application
    Filed: March 29, 2022
    Publication date: June 6, 2024
    Inventors: MARTINUS ARNOLDUS CORNELIS HEIJMANS, JAN DE GRAAF, ALDEGONDA LUCIA WEIJERS, ERIC CORNELIS EGBERTUS VAN GRUNSVEN
  • 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: 20230180370
    Abstract: Some embodiments are directed to a control system (140, 141, 142) for controlling a cooling fan used together with a motion detector. The controlling comprises controlling an activation and/or a rotation frequency of the cooling fan. The control system has a communication interface arranged for communication with the motion detector. The motion detector is configured to detect motion by emitting and receiving electromagnetic radiation and establishing frequency differences between the emitted and received electromagnetic radiation. The system operates the cooling fan at a regular rotation frequency and then, in response to obtaining a signal indicating that the motion detector is being used, adjusts the activation and/or the rotation frequency of the cooling fan, wherein said adjustment reduces an interference of the cooling fan with the frequency differences established by the motion detector.
    Type: Application
    Filed: March 15, 2021
    Publication date: June 8, 2023
    Inventors: FETZE PIJLMAN, JAN DE GRAAF
  • Patent number: 11493194
    Abstract: An objective of the present application is to provide an improved lighting device comprising a module for enabling wireless connectivity. The invention provides a lighting device comprising a light source, a housing and a module for enabling wireless connectivity of the lighting device, wherein the module comprises: an enclosure having a first main wall opposite to a second main wall; an antenna for wireless communication, wherein the antenna is contained within the enclosure, wherein the antenna is adjacent to the first main wall; a controller in connection with said antenna for enabling the wireless connectivity of the lighting device; mounting means arranged for mounting the module to the housing in a first position wherein the first main wall abuts the housing, or in a second position wherein the second main wall abuts the housing.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: November 8, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Lambertus Adrianus Marinus De Jong, Jan De Graaf, Franciscus Jacobus Vossen
  • 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: 10928032
    Abstract: A light emitting device (1) comprising a plurality of volume emitting LEDs (21-29) adapted for, in operation, emitting light, a substrate (3) on which said plurality of volume emitting LEDs is arranged, and an optical structure (4) comprising a surface (41) adapted for forming a light exit surface of the light emitting device, a first section (5) arranged such as to extend over said plurality of volume emitting LEDs opposite to the substrate, and a second section (6) comprising a plurality of light redirecting elements (61-68) adapted for redirecting light emitted by the plurality of volume emitting LEDs towards said surface of the optical structure by means of total internal reflection (TIR), the plurality of light redirecting elements (61-68) extending between adjacent volume emitting LEDs of the plurality of volume emitting LEDs and terminating adjacent to the substrate (3).
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 23, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Michel Cornelis Josephus Marie Vissenberg, Jan De Graaf, Grigory Alexandrovich Onushkin, Lambert Johannes Stil
  • Patent number: 10756074
    Abstract: A light emitting assembly (100), a spot lamp and a luminaire are provided. The light emitting assembly comprises at least one first package (110) with a solid-state light emitting a first color of light, a second package (120) with a solid-state light emitter emitting a second color of light and a third package (130) with a solid-state light emitter emitting a third color of light. The first package has a smallest side (w1) that is at least 60% smaller than the sides (w2, w3, l2, l3) of the second package and the third package. The packages are provided on a substrate (140). Seen in along a view direction towards a top surface of the substrate; an envelope around said packages is a circle or an ellipse (150) having a center (152), one first package is positioned on the center, or two first packages are provided at positions adjacent to the center and intersect with a virtual line through the center.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: August 25, 2020
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Michel Cornelis Josephus Vissenberg, Ludovicus Johannes Lambertus Haenen, Jan De Graaf
  • Publication number: 20200020675
    Abstract: A light emitting assembly (100), a spot lamp and a luminaire are provided. The light emitting assembly comprises at least one first package (110) with a solid-state light emitting a first color of light, a second package (120) with a solid-state light emitter emitting a second color of light and a third package (130) with a solid-state light emitter emitting a third color of light. The first package has a smallest side (w1) that is at least 60% smaller than the sides (w2, w3, l2, l3) of the second package and the third package. The packages are provided on a substrate (140). Seen in along a view direction towards a top surface of the substrate; an envelope around said packages is a circle or an ellipse (150) having a center (152), one first package is positioned on the center, or two first packages are provided at positions adjacent to the center and intersect with a virtual line through the center.
    Type: Application
    Filed: March 15, 2018
    Publication date: January 16, 2020
    Applicant: SIGNIFY HOLDING B.V.
    Inventors: MICHEL CORNELIS JOSEPHUS VISSENBERG, LUDOVICUS JOHANNES LAMBERTUS HAENEN, JAN DE GRAAF
  • Patent number: 10533726
    Abstract: An optical arrangement comprises two plates, with complementary shaped lens arrays. A decorative image is provided at the plate on the light input side. The plates are displaceable with respect to each other between a pass through mode with the plates in contact or close proximity, and a decorative image mode with the plates apart.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: January 14, 2020
    Assignee: Signify Holding B.V.
    Inventors: Siebe Tijerk De Zwart, Jan De Graaf, Michel Cornelis Josephus Marie Vissenberg
  • Patent number: 10290775
    Abstract: A semiconductor light emitting device comprising a light emitting layer disposed between an n-type region and a p-type region is combined with a ceramic layer which is disposed in a path of light emitted by the light emitting layer. The ceramic layer is composed of or includes a wavelength converting material such as a phosphor. Luminescent ceramic layers according to embodiments of the invention may be more robust and less sensitive to temperature than prior art phosphor layers. In addition, luminescent ceramics may exhibit less scattering and may therefore increase the conversion efficiency over prior art phosphor layers.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 14, 2019
    Assignee: Lumileds LLC
    Inventors: Gerd O. Mueller, Regina B. Mueller-Mach, Michael R. Krames, Peter J. Schmidt, Hans-Helmut Bechtel, Joerg Meyer, Jan de Graaf, Theo Arnold Kop
  • Publication number: 20190137072
    Abstract: A light emitting device (1) comprising a plurality of volume emitting LEDs (21-29) adapted for, in operation, emitting light, a substrate (3) on which said plurality of volume emitting LEDs is arranged, and an optical structure (4) comprising a surface (41) adapted for forming a light exit surface of the light emitting device, a first section (5) arranged such as to extend over said plurality of volume emitting LEDs opposite to the substrate, and a second section (6) comprising a plurality of light redirecting elements (61-68) adapted for redirecting light emitted by the plurality of volume emitting LEDs towards said surface of the optical structure by means of total internal reflection (TIR), the plurality of light redirecting elements (61-68) extending between adjacent volume emitting LEDs of the plurality of volume emitting LEDs and terminating adjacent to the substrate (3).
    Type: Application
    Filed: April 25, 2017
    Publication date: May 9, 2019
    Inventors: Michel Cornelis Josephus Marie VISSENBERG, Jan DE GRAAF, Grigory Alexandrovich ONUSHKIN, Lambert Johannes STIL
  • Patent number: 10208941
    Abstract: According to the invention a lamp (100, 200) is provided. The lamp (100, 200) comprising: a wick structure (102, 202) hosting a solid state light source (104, 204) and comprising a fixed wick material (108, 208), an envelope (106, 206) forming a cavity (109, 209) hosting the wick structure (102, 202), wherein the cavity (109, 209) is configured as a heat pipe comprising a working fluid (110, 210), wherein the envelope (106, 206) is shaped such that condensed working fluid (110, 210) is guided towards the fixed wick material (108, 208) independently of the spatial orientation of the lamp (100, 200).
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: February 19, 2019
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Jan De Graaf, Edwin De Groot, Simon Jacobus Maria Kuppens, Simon Eme Kadijk
  • Publication number: 20180245784
    Abstract: According to the invention a lamp (100, 200) is provided. The lamp (100, 200) comprising: a wick structure (102, 202) hosting a solid state light source (104, 204) and comprising a fixed wick material (108, 208), an envelope (106, 206) forming a cavity (109, 209) hosting the wick structure (102, 202), wherein the cavity (109, 209) is configured as a heat pipe comprising a working fluid (110, 210), wherein the envelope (106, 206) is shaped such that condensed working fluid (110, 210) is guided towards the fixed wick material (108, 208) independently of the spatial orientation of the lamp (100, 200).
    Type: Application
    Filed: November 18, 2016
    Publication date: August 30, 2018
    Inventors: Jan DE GRAAF, Edwin DE GROOT, Simon Jacobus Maria KUPPENS, Simon Eme KADIJK
  • Patent number: 10047945
    Abstract: The invention relates to a lighting device kit of parts comprising a lamp (3) and a lamp shade (5). The lamp (3) of the lighting device comprises a light source (11) and a heat sink area (13) comprising a main heat dissipating surface (15). The lamp shade (5) of the lighting device comprises a shade structure (17) conjoined via a thermal path part with a cooling structure (21) comprising a main surface (24). In a mounted position of the lamp shade (5) and the lamp (3), the main surface (24) of the cooling structure (21) adjoins the main heat dissipating surface (15) of the heat sink area (13). The invention further relates to a lamp and a lamp shade of said lighting device kit of parts.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: August 14, 2018
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Vincent Stefan David Gielen, Jan De Graaf, Brian David Clarke
  • 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