Patents by Inventor Cornelis Ronda
Cornelis Ronda 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).
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Patent number: 9638807Abstract: A host lattice modified GOS scintillating material and a method for using a host lattice modified GOS scintillating material is provided. The host lattice modified GOS scintillating material has a shorter afterglow than conventional GOS scintillating material. In addition, a radiation detector and an imaging device incorporating a host lattice modified GOS scintillating material are provided. A spectral filter may be used in conjunction with the GOS scintillating material.Type: GrantFiled: June 27, 2013Date of Patent: May 2, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Cornelis Ronda, Herbert Schreinemacher, Guenter Zeitler, Norbert Conrads, Simha Levene
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Publication number: 20160061962Abstract: A host lattice modified GOS scintillating material and a method for using a host lattice modified GOS scintillating material is provided. The host lattice modified GOS scintillating material has a shorter afterglow than conventional GOS scintillating material. In addition, a radiation detector and an imaging device incorporating a host lattice modified GOS scintillating material are provided. A spectral filter may be used in conjunction with the GOS scintillating material.Type: ApplicationFiled: June 27, 2013Publication date: March 3, 2016Inventors: Cornelis RONDA, Herbert SCHREINEMACHER, Guenter ZEITLER, Norbert CONRADS, Simha LEVENE
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Publication number: 20150001398Abstract: A host lattice modified GOS scintillating material and a method for using a host lattice modified GOS scintillating material is provided. The host lattice modified GOS scintillating material has a shorter afterglow than conventional GOS scintillating material. In addition, a radiation detector and an imaging device incorporating a host lattice modified GOS scintillating material are provided. A spectral filter may be used in conjunction with the GOS scintillating material.Type: ApplicationFiled: June 27, 2013Publication date: January 1, 2015Inventors: Cornelis RONDA, Herbert SCHREINEMACHER, Guenter ZEITLER, Norbert CONRADS, Simha LEVENE
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Patent number: 8492724Abstract: A host lattice modified GOS scintillating material and a method for using a host lattice modified GOS scintillating material is provided. The host lattice modified GOS scintillating material has a shorter afterglow than conventional GOS scintillating material. In addition, a radiation detector and an imaging device incorporating a host lattice modified GOS scintillating material are provided.Type: GrantFiled: July 14, 2009Date of Patent: July 23, 2013Assignee: Koninklijke Philips Electronics N.V.Inventors: Cornelis Ronda, Herbert Schreinemacher, Guenter Zeltier, Norbert Conrads, Simha Levene
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Patent number: 8221664Abstract: A hot axial pressing method for sintering a ceramic powder, particularly doped Gd2O2S, comprises the step of placing a first porous body (7), the ceramic powder (9) and a second porous body (7) into a mould shell (5) supported by a support (13, 14). The ceramic powder (9) is located between the porous bodies (7). Gaseous components are evacuated from the ceramic powder (9) up to an ambient pressure of less than 0.8 bar. The porous body (7) and the ceramic powder (9) are heated to a maximum temperature of at least 900° C. and are applied to a pressure up to a maximum pressure of at least 75 Mpa. According to the invention the variation in time of the heating step and the variation in time of the pressure applying step is adjusted to each other such that the mould shell 5 is held by the porous bodies (7) and/or the ceramic powder (9) in a state where the mould shell (5) and the support (13, 14) are disconnected with respect to each other.Type: GrantFiled: December 19, 2007Date of Patent: July 17, 2012Assignee: Koninklijke Philips Electronics N.V.Inventors: Guenter Zeitler, Herbert Schreinemacher, Cornelis Ronda
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Publication number: 20110180715Abstract: A host lattice modified GOS scintillating material and a method for using a host lattice modified GOS scintillating material is provided. The host lattice modified GOS scintillating material has a shorter afterglow than conventional GOS scintillating material. In addition, a radiation detector and an imaging device incorporating a host lattice modified GOS scintillating material are provided.Type: ApplicationFiled: July 14, 2009Publication date: July 28, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Cornelis Ronda, Herbert Schreinemacher, Guenter Zeiltier, Norbert Conrads, Simha Levene
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Publication number: 20080006835Abstract: The present invention relates to the use of photonic band gap materials with phosphors incorporated. Photonic band gap materials play an important role for LEDs as light sources in applications where either a high radiance is desirable or LEDs are used in optical systems. The optical properties of current LEDs are such that the radiance is rather low and cannot be increased by standard means. It is an object of the invention to improve the radiance of light emitting devices by making use of photonic band gap materials with phosphors incorporated.Type: ApplicationFiled: July 14, 2005Publication date: January 10, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Cornelis Ronda, Holger Monch, Hans Nikol
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Patent number: 7288107Abstract: A tanning device is described by which the bluish light emitted by mercury vapor lamps is converted into yellow or white light. For this purpose, the mercury lamps, or the sheets of transparent plastics material covering these lamps, are doped or coated with one or more organic or inorganic fluorescent dyes that partially absorb the blue light emitted by the mercury lamps and convert it into light of wavelengths of 550 to 650 nm.Type: GrantFiled: July 2, 2003Date of Patent: October 30, 2007Assignee: Koninklijke Philips Electronics, N.V.Inventors: Thomas Jüstel, Cornelis Ronda, Franscisus Altena, Wolfgang Busselt, Olaf Mastenbroek, Hans-Helmut Bechtel
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Publication number: 20070060985Abstract: A tanning device is described that includes semiconductor light-emitting diodes (LEDs) as a light source, which LEDs are preferably composed of (InGa)N, (AlGa)N, (AlInGa)N or (AlInGa)P as their semiconductor material.Type: ApplicationFiled: April 27, 2004Publication date: March 15, 2007Inventors: Thomas Juestel, Cornelis Ronda
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Publication number: 20060187699Abstract: The invention relates to a semiconductor device, which is arranged in a semiconductor body (1), and which comprises at least one source region (4) and at least one drain region (5), each being of the first conductivity type, and at least one body region (8) of the second conductivity type, arranged between source region (4) and drain region (5), and at least one gate electrode (10) which is isolated with respect to the semiconductor body (1) via an isolation layer (9). Said isolation layer (9) comprises polarizable particles, which are composed of a nanoparticulate isolating core and a sheath of polarizable anions or polarizable cations. The isolation layer (9) exhibits a high dielectric constant ?.Type: ApplicationFiled: March 8, 2004Publication date: August 24, 2006Inventors: Cornelis Ronda, Stefan Grabowski
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Publication number: 20050261751Abstract: A tanning device is described by which the bluish light emitted by mercury vapor lamps is converted into yellow or white light. For this purpose, the mercury lamps, or the sheets of transparent plastics material covering these lamps, are doped or coated with one or more organic or inorganic fluorescent dyes that partially absorb the blue light emitted by the mercury lamps and convert it into light of wavelengths of 550 to 650 nm.Type: ApplicationFiled: July 2, 2003Publication date: November 24, 2005Inventors: Thomas Justel, Cornelis Ronda, Franscisus Altena, Wolfgang Busselt, Olaf Mastenbroek, Hans-Helmut Bechtel
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Publication number: 20050258756Abstract: A low-pressure gas-discharge lamp provided with a gas-tight discharge vessel that contains a gas filling, with electrodes for maintaining a gas discharge in the discharge vessel, at least one of which electrodes is arranged inside the discharge vessel and comprises a coil having a core made from a first metallic refractory material that has a first electronegativity, having a surrounding winding made from a second metallic refractory material that has a second electronegativity, having a coating of an electron-emitting material arranged between the core and the winding and having current feeds, and with means for starting and maintaining a gas discharge. The invention also relates to an electrode.Type: ApplicationFiled: July 2, 2003Publication date: November 24, 2005Applicant: Koninklijke Philips Electronics N.V.Inventors: Cornelis Denissen, Cornelis Ronda
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Publication number: 20050242702Abstract: An ultraviolet reflecting layer and a fluorescent lamp is described, comprising an envelope having an inner surface, means within the lamp envelope for generating ultraviolet radiation, a light emitting layer of a luminescent material for generating visible light when impinged by ultraviolet radiation, and said ultraviolet reflecting layer, located between the light emitting layer and the inner surface of the lamp envelope, wherein the ultraviolet reflecting layer comprises a metal phosphate and/or a metal borate, with the metal being selected from Sc, Y, La, Gd, Lu and Al, or combinations thereof. The phosphates or borates used in the ultraviolet reflecting layer may optionally be doped by a Tn3+ and/or Dy3+ activator, to further improve the quantum yield of the conversion of UV radiation into visible light.Type: ApplicationFiled: May 27, 2003Publication date: November 3, 2005Applicant: Koninklijke Philips Electronics N.V.Inventors: Thomas Justel, Walter Mayr, Cornelis Ronda, Volker Hildenbrand
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Publication number: 20050173675Abstract: The invention relates to a method of manufacturing europium-doped (Ca1-xSrx)S (0£×£1) luminescent material with a short decay time and a high thermal extinction temperature, wherein the europium-doped strontium sulfide is subjected to at least a first caldnation step at high temperatures in the presence of at least one iodine compound. The invention further relates to the luminescent material as such and to its use for light-emitting components such as light-emitting diodes (LEDs) and laser diodes coated with luminescent materials.Type: ApplicationFiled: April 30, 2003Publication date: August 11, 2005Applicant: Koninklijke Philips Electronics N.V.Inventors: Peter Schmidt, Thomas Justel, Cornelis Ronda, Detlef Wiechert
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Publication number: 20050122028Abstract: In an UV-reflecting layer for discharge lamps, the layer comprises at least 0.1% by weight of A12O3 and at least 0.1% by weight of a material having a higher refractive index than A12O3, so that as large a proportion of UV light as possible can be reflected and as large a portion of visible light as possible can be emitted by the lamp.Type: ApplicationFiled: January 19, 2005Publication date: June 9, 2005Inventors: Volker Hildenbrand, Harald Glaeser, Cornelis Ronda, Claudia Mutter
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Patent number: 6654079Abstract: A liquid crystal color display screen is provided with an electro-optical medium, two parallel transparent substrates by which the electro-optical medium is flanked, a device that influences the transmission state of the electro-optical medium, and a phosphor layer having at least two phosphors on the first substrate. A radiation source emits radiation having a maximum emission at a wavelength &lgr;1 <360 nm. The radiation source is situated at the side of the second substrate. The screen also includes a UV phosphor that transforms the radiation having a maximum emission at a wavelength &lgr;1<360 nm to radiation having a maximum emission at a wavelength &lgr;2>360 nm.Type: GrantFiled: January 12, 2001Date of Patent: November 25, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Helmut Bechtel, Hans Nikol, Cornelis Ronda, Thomas Jüstel
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Patent number: 6602617Abstract: A plasma picture screen with a phosphor preparation comprising a phosphor with a coating which comprises a phosphate MPO4, wherein M is a metal chosen from the group Al, Sc, Y, Lu, Gd, and La. This coating is effective in counteracting the thermal degradation of the phosphor during the manufacture of the plasma picture screen.Type: GrantFiled: August 7, 2000Date of Patent: August 5, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Thomas Justel, Cornelis Ronda, Volker Weiler
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Publication number: 20010043294Abstract: A liquid crystal color display screen, which is provided with an electro-optical medium, two parallel transparent substrates by which the electro-optical medium is flanked, means for influencing the transmission state of the electro-optical medium, a phosphor layer comprising at least two phosphors on the first substrate, a radiation source for emitting radiation having a maximum emission at a wavelength &lgr;1<360 nm, which radiation source is situated at the side of the second substrate, and means for transforming the radiation having a maximum emission at a wavelength &lgr;1<360 nm to radiation having a maximum emission at a wavelength &lgr;2>360 nm.Type: ApplicationFiled: January 12, 2001Publication date: November 22, 2001Inventors: Helmut Bechtel, Hans Nikol, Cornelis Ronda, Thomas Justel
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Publication number: 20010038426Abstract: A liquid crystal display screen provided with a liquid crystal layer, two parallel transparent substrates by which the liquid crystal layer is flanked, a means for influencing the transmission state of the liquid crystal layer, a blue-emitting radiation source for radiation with a maximum emission at a wavelength of 400<&lgr;1<450 nm at the side of the first substrate, and a first phosphor layer comprising at least one phosphor, which phosphor layer is situated on the second substrate.Type: ApplicationFiled: January 12, 2001Publication date: November 8, 2001Inventors: Helmut Bechtel, Hans Nikol, Cornelis Ronda
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Patent number: 6051925Abstract: A diode-addressed color display comprising an UV-diode and a phosphor of the general formula [Eu(diketonate).sub.a X.sub.b1 X'.sub.b2 ], wherein X=pyridine or a unidentate pyridine derivative and X'=2,2'-bipyridine or a 2,2'-bipyridyl derivative and 2a+b.sub.1 +2b.sub.2 =8, is characterized by a high quantum efficiency and a high extinction coefficient in the near-UV wavelength range and enables a color-sensitive image reproduction to be achieved.Type: GrantFiled: November 3, 1998Date of Patent: April 18, 2000Assignee: U.S. Philips CorporationInventors: Herbert Boerner, Thomas Justel, Hans Nikol, Cornelis Ronda