Patents by Inventor Dirk Broer

Dirk Broer 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: 20130300538
    Abstract: An RFID reader and method for reading an RFID tag is provided herein. The RFID reader operates in a “bistatic” mode, utilizing two RF antennas, one for transmitting an RF signal, and one for receiving an RF signal. The transmit and receive antennas do not “point” in a same direction resulting in lobe patterns that will intersect at an angle.
    Type: Application
    Filed: May 8, 2012
    Publication date: November 14, 2013
    Applicant: MOTOROLA SOLUTIONS, INC.
    Inventor: Dirk A. BROER
  • Patent number: 8568962
    Abstract: The invention relates to a photo-embossing process for the preparation of a polymeric relief structure comprising the steps of: a) coating a substrate with a coating composition comprising one or more radiation-sensitive ingredients and less than 30 wt % polymeric binder material; b) locally treating the coated substrate with electromagnetic radiation having a periodic, non-periodic or random radiation-intensity pattern, forming a latent image, at a temperature below a transition temperature of the coating composition; and c) polymerizing and/or crosslinking the resulting coated substrate, at a temperature above said transition temperature, wherein the transition temperature is a temperature that defines a transition of the coating composition between a state of high viscosity and low viscosity and wherein the coating composition comprises a compound A comprising at least one radiation curable group and a photoinitiator, the coating composition having a transition temperature between 30° C. and 120° C.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: October 29, 2013
    Assignee: Stichting Dutch Polymer Institute
    Inventors: Ko Hermans, Itsuro Tomatsu, Rintje Pieter Sijbesma, Cornelis Wilhelmus Maria Bastiaansen, Jan Dirk Broer
  • Patent number: 8537014
    Abstract: A system, techniques, and apparatus for determining RFID tag movement are disclosed. The system includes an RFID reader that is configured to detect an RFID tag's motion by comparing backscattered signals received from the tag. The system can also generate and filter alerts according to pre-defined business rules based on the detection.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: September 17, 2013
    Assignee: Symbol Technologies, Inc.
    Inventor: Dirk A. Broer
  • Patent number: 8217793
    Abstract: A system, techniques, and apparatus for detecting rogue RFID readers are disclosed. The system detects unauthorized reader to tag communication, and with multiple detectors, provides location information concerning one or more unauthorized readers. The system can detect high power commands of an unauthorized reader(s) in predefined areas and be integrated with an article surveillance system.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: July 10, 2012
    Assignee: Symbol Technologies, Inc.
    Inventor: Dirk A. Broer
  • Publication number: 20110104445
    Abstract: The invention relates to a photo-embossing process for the preparation of a polymeric relief structure comprising the steps of: a) coating a substrate with a coating composition comprising one or more radiation-sensitive ingredients and less than 30 wt % polymeric binder material; b) locally treating the coated substrate with electromagnetic radiation having a periodic, non-periodic or random radiation-intensity pattern, forming a latent image, at a temperature below a transition temperature of the coating composition; and c) polymerizing and/or crosslinking the resulting coated substrate, at a temperature above said transition temperature, wherein the transition temperature is a temperature that defines a transition of the coating composition between a state of high viscosity and low viscosity and wherein the coating composition comprises a compound A comprising at least one radiation curable group and a photoinitiator, the coating composition having a transition temperature between 30° C. and 120° C.
    Type: Application
    Filed: April 7, 2009
    Publication date: May 5, 2011
    Inventors: Ko Hermans, Itsuro Tomatsu, Rintje Pieter Sijbesma, Cornelis Wilhelmus Maria Bastiaansen, Jan Dirk Broer
  • Publication number: 20100259261
    Abstract: The invention relates to a nuclear magnetic resonance imaging radio frequency—receiver (112; 216; 308; 404), the receiver (112; 216; 308; 404) being adapted to receive analogue signals from at least one radio frequency receiver coil unit (106; 200; 202; 300; 400; 402), the radio frequency receiver (112; 216; 308; 404) comprising: an analogue-digital converter (118; 226) to convert the analogue pre-amplified magnetic resonance signal into a digital signal, means (120; 230) for digital down converting the digital signal and a first communication interface (130; 252) adapted for transmitting the down converted digital signal via a communication link (e.g. wireless, optical or wire-bound).
    Type: Application
    Filed: June 16, 2008
    Publication date: October 14, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Marc Paul Saes, Johan Samuel Van Den Brink, Filips Van Liere, Roel Penterman, Ralph Kurt, Emiel Peeters, Dirk Broer, Michel Paul Barbara Van Bruggen, Hans Van Zon, Miha Fuderer
  • Publication number: 20100156651
    Abstract: A system, techniques, and apparatus for determining RFID tag movement are disclosed. The system includes an RFID reader that is configured to detect an RFID tag's motion by comparing backscattered signals received from the tag. The system can also generate and filter alerts according to pre-defined business rules based on the detection.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Inventor: Dirk A Broer
  • Publication number: 20100148964
    Abstract: A system, techniques, and apparatus for detecting rogue RFID readers are disclosed. The system detects unauthorized reader to tag communication, and with multiple detectors, provides location information concerning one or more unauthorized readers. The system can detect high power commands of an unauthorized reader(s) in predefined areas and be integrated with an article surveillance system.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Inventor: Dirk A. Broer
  • Publication number: 20100045900
    Abstract: A method for the manufacture of a polarizer is provided. The method comprises providing a liquid crystal composition comprising a liquid crystal host and a viscosity enhancer; providing a thin film of said composition on a substrate; orienting said liquid crystal host to obtain an aligned film in a first liquid crystal mesophase, wherein the liquid crystal host is aligned planar to said substrate; gelating said viscosity enhancer to congeal said film; and obtaining a second liquid crystal state in said congealed film. By the use of a viscosity enhancer in the composition, homeotropic alignment of the liquid crystal host can be suppressed.
    Type: Application
    Filed: June 23, 2006
    Publication date: February 25, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Emiel Peeters, Dirk Broer
  • Publication number: 20100028816
    Abstract: The invention relates to a process for the preparation of a polymeric relief structure comprising the steps of coating a substrate with a coating composition comprising one or more radiation-sensitive ingredients, locally treating the coated substrate with electromagnetic radiation having a periodic or random radiation-intensity pattern, forming a latent image, and polymerizing and/or crosslinking the resulting coated substrate, wherein the coating composition comprises one or more radical scavengers in an amount sufficient to inhibit/retard substantial polymerization in the non-treated areas of the coated substrate, and low enough to allow polymerization and/or crosslinking in the treated areas in step c, with the proviso that the amount of oxygen present in the coating composition is not equal to the equilibrium amount of oxygen present when the coating composition is in contact with air.
    Type: Application
    Filed: August 28, 2007
    Publication date: February 4, 2010
    Inventors: Ko Hermans, Cornelis Wilhelmus Maria Bastiaansen, Dirk Broer, Jolke Perelaer
  • Publication number: 20070254208
    Abstract: The invention relates to a method for photo-embossing a monomer-containing layer for obtaining a photovoltaic cell, a light emitting diode (LED), or a light emitting electrochemical cell (LEC) by the steps of: (a) optionally providing one or more layers onto the surface of the monomer-containing layer, (b) irradiating through a mask a layer consisting of a homogeneous blend of at least two different compounds, at least one of which is a polymerizable monomer, to obtain a monomer-containing layer with exposed and non-exposed areas; (c) optionally providing further layers onto the surface of the monomer-containing layer; (d) expanding the exposed or the non-exposed areas by diffusing at least one of the monomers to the exposed areas to obtain a corrugated surface of the layer; or interchanging steps c) and d).
    Type: Application
    Filed: December 6, 2004
    Publication date: November 1, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONIC, N.V.
    Inventors: Ralph Kurt, Margaretha De Kok-Van Breemen, Hans-Helmut Bechtel, Sepas Setayesh, Dirk Broer, Martin Jak
  • Publication number: 20070246688
    Abstract: This invention relates to an improved process for the nano- or microstructuring of a substrate by applying a mesogen or a mesogenic mixture on top of the substrate. The improvement is that the mesogen or mesogenic mixture is contact printed unto the target substrate, said substrate having an alignment layer.
    Type: Application
    Filed: July 11, 2005
    Publication date: October 25, 2007
    Inventors: Carlos Sanchez, Cornelis Bastiaansen, Dirk Broer, Frank Verbakel
  • Publication number: 20070222921
    Abstract: An electronic device (10) comprises a substrate (100) carrying a single electrode structure (120) and a plurality of electro-optical elements (140; 160, 180). The plurality of electro-optical elements (140, 160, 180) at least includes a first electro-optical element (140) covering a first part of the electrode structure (120), the first electro-optical element (140) comprising a first electrooptical material with a first transmission/voltage response characteristic and a second electro-optical element (160) covering a second part of the electrode structure (120), the second electro-optical element (160) comprising a second electro-optical material with a second transmission/vokage response characteristic. Consequently, the various electro-optical elements (140; 160 180) can be individually controlled with a single electrode structure by applying variable voltages.
    Type: Application
    Filed: December 17, 2004
    Publication date: September 27, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONIC, N.V.
    Inventors: Stephen Klink, Dirk Broer, Hjalmar Huitema, Joost Vogels, Roel Penterman
  • Publication number: 20070146509
    Abstract: The invention relates to a color display device for display a color image and a method of operating such display. The color display device is provided with a plurality of picture elements, two selectable light sources having different predetermined radiance spectra, color selection means which in combination with the selectable light sources is able to produce respective first and second primary colors on the display panel and control means arranged to select alternately one of the selectable light sources and to provide a portion of the picture elements with image information corresponding to the respective primary colors obtainable with the selected light source. The primary colors of the display device can be selected in a time sequential and space sequential way which enable a reduction of a color break-up.
    Type: Application
    Filed: September 30, 2003
    Publication date: June 28, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Gerben Hekstra, Hugo Cornelissen, Dirk De Boer, Dirk Broer, Martin Jak, Erno Langendijk, Leo Velthoven, Michiel Klompenhouwer
  • Publication number: 20070146575
    Abstract: A method is provided of producing an active matrix display device having an optical layer comprising a mixture of an electro-optical material and a polymer precursor. An upper layer of the active plate is processed in dependence on a difference between the transmission or reflection characteristics of the row and column conductors and of the pixel electrodes, thereby to process the upper layer in dependence on the row and column pattern or the pixel electrode pattern. The optical layer is then exposed from above the substrate to a stimulus for polymerizing the polymer precursor into a discrete polymer surface layer, thereby enclosing the electro-optical material between the polymerized material and the active plate to define display pixels. Enclosed bodies of electro-optical material defining display pixels are defined in a pattern defined by the processing of the upper layer.
    Type: Application
    Filed: November 17, 2004
    Publication date: June 28, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Joost Vogels, Dirk Broer, Hjalmar Huitema, Stephen Klink, Hendrik De Koning, Roel Penterman
  • Publication number: 20070145632
    Abstract: An elastomeric stamp (10) for printing a pattern on a substrate (500) with an ink (520) is at least partially formed from a first material such as PDMS. The stamp comprises a first surface (12) in a first plane, a second surface (14) in a second plane and a third surface (16) extending from the first surface (12) to the second surface (14). The first surface (12) typically forms to the contact surface of a protruding feature of the stamp (10), whereas the third surface (16) typically forms the edge of such a feature. The first surface (12) comprises a barrier layer (22) being substantially impermeable to the ink (520). Optionally, the second surface (14) may carry a further barrier layer (24) to suppress gas phase diffusion of the ink (520). In contrast, the third surface (16) is permeable to the ink (520). Consequently, a stamp (10) is obtained that is highly suitable for edge transfer lithography type patterning.
    Type: Application
    Filed: October 7, 2004
    Publication date: June 28, 2007
    Inventors: Emiel Peeters, Dirk Broer, Fredericus Van Den Heuvel, Dirk Burdinski
  • Publication number: 20070126951
    Abstract: The present invention discloses an electronic device (100) comprising a substrate (10) carrying an electrode structure (12); an electro-optical stack (90) at least partially covering the electrode structure (12), the electro-optical stack comprising a stratified polymer layer (44), a further substrate (20) and an electro-optical material (32) sandwiched between the polymer layer (44) and the further substrate (20); and an adhesive layer (60) between the substrate (10) and the electro-optical stack, as well as a method for producing such an electronic device (100), in which the electro-optical stack (90) and the substrate (10) are prepared in separate processes and combined by an adhesive layer (60). This improves the yield of such an electronic device (100), because a production error in one of the components no longer leads to the loss of the whole electronic device (100).
    Type: Application
    Filed: December 17, 2004
    Publication date: June 7, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONIC, N.V.
    Inventors: Joost Vogels, Dirk Broer, Hjalmar Huitema, Roel Penterman, Stephen Klink
  • Publication number: 20070091061
    Abstract: The invention relates to an electrophoretic display panel (11) comprising one or more pixels (20; 42) comprising a fluid with dispersed charged particles (30) and a polymer wall (21; 44) enclosing the fluid. The invention further relates to a method for manufacturing an electrophoretic display panel (11) comprising one or more pixels (20; 42) comprising the steps of providing a material system comprising a fluid with dispersed charged particles (30) and a photo-polymerizable substance and exposing one or more selected portions of said material system to radiation to form a polymer wall (21; 44) enclosing the fluid by polymerizing said photo-polymerizable substance.
    Type: Application
    Filed: June 4, 2004
    Publication date: April 26, 2007
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Lucas Schlangen, Roel Penterman, Dirk Broer
  • Publication number: 20070081107
    Abstract: An active matrix display device has an optical layer (7,9,11) comprising a mixture of an electro-optical material and a polymer precursor. An upper surface of the active plate comprises an array of wells (70) such that the upper surface has higher (72) and lower regions, and the optical layer mixture is provided over the active plate. The optical layer is exposed to a stimulus for polymerizing the polymer precursor into a polymer layer constituted by a top surface (9) and by side walls (11), thereby enclosing the electro-optical material between the polymerized material and the active plate to define display pixels. Enclosed bodies of electro-optical material defining display pixels are thus provided over the lower regions. This method uses the processing of the active plate to define wells (70) which provide a height difference which can be used to provide alignment of enclosed display pixels cells. This avoids the need for an alignment mask during the deposition and exposure of the optical layer.
    Type: Application
    Filed: November 1, 2004
    Publication date: April 12, 2007
    Inventors: Hjalmar Huitema, Roel Penterman, Joost Vogels, Stephen Klink, Hendrik De Koning, Dirk Broer
  • Publication number: 20070053051
    Abstract: The invention relates to a micro-mechanical thermal structure for modulating a light beam and a method for manufacturing such a structure. The micro-mechanical structure comprises two layers of material with different thermal expansion coefficients in a first direction and a second direction respectively, in which the first direction is transverse to the second direction and the two layers comprise an oriented polymer and the director of the molecules of the oriented polymer of the first layer is transverse to the director of the molecules of the oriented polymer of the second layer. An array of such micro-mechanical structures may form a thermo-optical modulator for modulating light. The method comprises a step of providing a mold with an orientation-inducing layer to obtain a molecular orientation in a mono-meric state of liquid crystalline monomers and a step of fixing the molecular orientation by photo-polymerization.
    Type: Application
    Filed: November 20, 2003
    Publication date: March 8, 2007
    Inventors: Dirk Broer, Grietje Mol, Christiane De Witz