Patents by Inventor Jonas Tirén
Jonas Tirén 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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Publication number: 20180114666Abstract: The present invention relates to the field of field emission lighting, and specifically to a method for forming a field emission cathode. The method comprises arranging a growth substrate in a growth solution comprising a Zn-based growth agent, the growth solution having a pre-defined pH-value at room temperature; increasing the pH value of the growth solution to reach a nucleation phase; upon increasing the pH of the solution nucleation starts. The growth phase is then entered by decreasing the pH. The length of the nanorods is determined by the growth time. The process is terminated by increasing the pH to form sharp tips. The invention also relates to a structure for such a field emission cathode and to a lighting arrangement comprising the field emission cathode.Type: ApplicationFiled: May 16, 2016Publication date: April 26, 2018Applicant: Lightlab Sweden ABInventors: Jonas TIRÉN, Jan-Otto CARLSSON, Olesya NIKONOVA
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Publication number: 20170345640Abstract: The present invention generally relates to a field emission light source and specifically to a miniaturized field emission light source that is possible to manufacture in large volumes at low cost using the concept of wafer level manufacturing, i.e. a similar approach as used by IC's and MEMS. The invention also relates to a lighting arrangement comprising at least one field emission light source.Type: ApplicationFiled: December 14, 2015Publication date: November 30, 2017Applicants: Lightlab Sweden AB, Nanyang Technological UniversityInventors: Jonas TIRÉN, Hilmi Volkan DEMIR
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Publication number: 20170327372Abstract: There is provided a method for manufacturing a plurality of nanostructures comprising the steps of providing a plurality of spherical Zn structures and oxidizing the spherical structures in ambient atmosphere at a temperature in the range of 350° C. to 600° C. for a time period in the range of h to 172 h, such that ZnO nanowires protruding from the spherical structures are formed. There is also provided a field emission arrangement comprising a cathode having the aforementioned ZnO nanowire structures arranged thereon.Type: ApplicationFiled: November 19, 2015Publication date: November 16, 2017Applicant: Lightlab Sweden ABInventors: Jonas TIRÉN, Yuan-Yao LI, Chia-Yen HSU, Ying-Pin WU
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Publication number: 20170236677Abstract: The present invention generally relates to an x-ray source and specifically to an x-ray source suitable for large area x-ray generation. The invention also relates to a system comprising such an x-ray source.Type: ApplicationFiled: August 31, 2015Publication date: August 17, 2017Inventor: Jonas TIRÉN
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Publication number: 20160020084Abstract: The present invention relates to a field emission lighting arrangement, comprising an anode and a cathode, where the shape of the cathode is selected based on the shape of a evacuated envelope in which the anode and cathode is provided. The inventive shape of cathode allows for an improved uniformity of an electric field provided between the anode and cathode during operation of the field emission lighting arrangement. The invention also relates to a corresponding method for selecting a shape of such a cathode.Type: ApplicationFiled: March 14, 2014Publication date: January 21, 2016Inventor: Jonas TIRÉN
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Patent number: 9237622Abstract: The present invention relates to a power supply for a field emission light source. The novel power supply allows for a reduction in size as well as allowing for improvements relating to power factor and efficiency. The size reduction further allows the power supply to efficiently be integrated together with the field emission light source forming a lighting device.Type: GrantFiled: December 21, 2012Date of Patent: January 12, 2016Assignee: LIGHTLAB SWEDEN ABInventors: Goran Mork, Jonas Tiren
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Publication number: 20140361700Abstract: The present invention relates to a power supply for a field emission light source. The novel power supply allows for a reduction in size as well as allowing for improvements relating to power factor and efficiency. The size reduction further allows the power supply to efficiently be integrated together with the field emission light source forming a lighting device.Type: ApplicationFiled: December 21, 2012Publication date: December 11, 2014Inventors: Goran Mork, Jonas Tiren
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Patent number: 7149282Abstract: A miniaturized X-ray source is disclosed. It comprises an anode structure (43) and a cathode structure (41), each having an essentially pointed portion (44, 42), wherein at least the pointed portions being directed towards each other and enclosed in a vacuum cavity (49). The anode structure has an essentially dome shaped structure having a first essentially flat part (46) surrounded by a second essentially flat part (48), connected by a wall section (47), such that said first and second parts are located at different levels. The pointed portion is provided on said first flat portion and having an extension such that the apex of said pointed portion does not extend beyond the level of said second essentially flat part. A method of making an X-ray source is also disclosed.Type: GrantFiled: September 7, 2001Date of Patent: December 12, 2006Assignee: Radi Medical Technologies ABInventors: Pelle Rangsten, Carolina Ribbing, Klas Hjort, Jonas Tirén
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Publication number: 20040008818Abstract: A miniaturized X-ray source is disclosed. It comprises an anode structure (43) and a cathode structure (41), each having an essentially pointed portion (44, 42), wherein at least the pointed portions being directed towards each other and enclosed in a vacuum cavity (49). The anode structure has an essentially dome shaped structure having a first essentially flat part (46) surrounded by a second essentially flat part (48), connected by a wall section (47), such that said first and second parts are located at different levels. The pointed portion is provided on said first flat portion and having an extension such that the apex of said pointed portion does not extend beyond the level of said second essentially flat part. A method of making an X-ray source is also disclosed.Type: ApplicationFiled: March 6, 2003Publication date: January 15, 2004Inventors: Pelle Rangsten, Carolina Ribbing, Klas Hjort, Jonas Tiren
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Patent number: 6658088Abstract: A miniature X-ray source includes a support structure provided with a through hole, an anode arranged at one end of the hole and a cathode at the other end of the hole, thereby defining a cavity, wherein the anode and cathode are adapted to be energized to generate X-ray radiation. The support structure has a cross-sectional shape that is determined such that a desired radiation distribution of the radiation generated by the X-ray source is achieved. Also a method of manufacturing miniature X-ray sources is disclosed.Type: GrantFiled: February 26, 2001Date of Patent: December 2, 2003Assignee: Radi Medical Technologies ABInventor: Jonas Tiren
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Patent number: 6648810Abstract: Medical system comprising a hollow catheter 14, for insertion into a human or animal body, and an elongated x-ray tube unit 12 provided with an x-ray tube 16 at its distal end and adapted to be inserted into the catheter. A distal pole 8 of the x-ray tube is connectable to a connection means 22 in said catheter, wherein the x-ray tube is energised via a single electrical conductor 18 in said x-ray tube unit connected to the proximal pole and via said connection means.Type: GrantFiled: November 9, 2000Date of Patent: November 18, 2003Assignee: Radi Medical Technologies ABInventors: Lars Tenerz, Jonas Tirén, Leif Smith
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Patent number: 6561966Abstract: The invention relates to an apparatus for the controlled delivery of ionizing radiation to a therapy location. It comprises a source (4) of ionizing radiation provided at the distal end of an elongated member (6). It also has a control unit (12) for controlling the movement of said radiation source (4) at the therapy location, via a driving unit (21, 22; 23, 24, 25, 26). A method according to the invention comprises controlling the radiation dose at the therapy location, by controlling the movement of the source.Type: GrantFiled: October 6, 2000Date of Patent: May 13, 2003Assignee: Radi Medical Technologies ABInventors: Leif Smith, Lars Tenerz, Jonas Tiren
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Patent number: 6522203Abstract: In an output stage of an electronic signal processing circuit such as that used for transmission from a mobile telephone set the amplifier circuit comprises two power transistors (A, B) or type FET. The power transistors are used for amplifying different signals such as signals for different wavelength bands in a duel band telephone set and they are not used simultaneously. Each power transistor comprises a multitude of elementary transistors (19, 21) or “fingers” which are interdigitated to form an interleaved configuration, the element transistors of one transistor alternating with the element transistors of the other transistor. Thereby the effective area which can receive heat dissipated by the element transistors will be twice that used when the element transistors are located in two geometrically separated groups which will allow a higher power load on each transistor element.Type: GrantFiled: September 27, 2000Date of Patent: February 18, 2003Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Jonas Tiren, Jesper Engvall
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Patent number: 6514192Abstract: Medical system comprising an X-ray tube unit catheter 302 and an X-ray tube unit including a miniaturised X-ray tube 301, wherein the X-ray tube unit is adapted to be inserted into the X-ray tube unit catheter in order to generate X-ray radiation at a treatment position in a vessel within a human or animal body.The X-ray tube is provided with a distal electrical pole and a proximal electrical pole. The proximal pole is connected via an insulated electrical conductor 305 to an external power source. The distal pole is connectable to a conducting means 304 at the inner surface of the catheter wall via distal connecting means 303. The conducting means has a predetermined length extending in the longitudinal direction of the catheter and is connected via an insulated electrical conductor to the external power source. During treatment the X-ray tube unit is adapted to be moved in relation to the X-ray tube unit catheter, wherein the distal pole is electrically connected to the conducting means.Type: GrantFiled: February 15, 2001Date of Patent: February 4, 2003Assignee: Radi Medical Technologies ABInventor: Jonas Tiren
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Publication number: 20020115901Abstract: Medical system comprising an X-ray tube unit catheter 302 and an X-ray tube unit including a miniaturized X-ray tube 301, wherein the X-ray tube unit is adapted to be inserted into the X-ray tube unit catheter in order to generate X-ray radiation at a treatment position in a vessel within a human or animal body. The X-ray tube is provided with a distal electrical pole and a proximal electrical pole. The proximal pole is connected via an insulated electrical conductor 305 to an external power source. The distal pole is connectable to a conducting means 304 at the inner surface of the catheter wall via distal connecting means 303. The conducting means has a predetermined length extending in the longitudinal direction of the catheter and is connected via an insulated electrical conductor to the eternal power source. During treatment the X-ray tube unit is adapted to be moved in relation to the X-ray tube unit catheter, wherein the distal pole is electrically connected to the conducting means.Type: ApplicationFiled: February 15, 2001Publication date: August 22, 2002Inventor: Jonas Tiren
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Publication number: 20020054664Abstract: Miniature X-ray source comprising a support structure provided with a through-going hole, an anode is arranged at one end and a cathode (8,24) at the other end of the hole, thereby defining a cavity, the anode and cathode are adapted to be energised in order to generate X-ray radiation. The support structure has a cross-sectional shape that is determined such that a desired radiation distribution of the radiation generated by the X-ray source is achieved. Also a method of manufacturing miniature X-ray sources is disclosed.Type: ApplicationFiled: February 26, 2001Publication date: May 9, 2002Inventor: Jonas Tiren
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Publication number: 20020054665Abstract: Miniature X-ray source comprising an insulation structure defining a cavity where an anode and a cathode are arranged, said cavity being evacuated, connecting means arranged to connect the anode and the cathode to a high voltage source in order to energise the X-ray source. The insulation structure includes a first layer and a second layer, the first layer facing the cavity and has a low gas permeability, and the second layer is arranged outside said first layer and has a high electrical break-through voltage. The electrical break-through voltage for the insulation structure is above a predetermined threshold value.Type: ApplicationFiled: February 26, 2001Publication date: May 9, 2002Inventor: Jonas Tiren
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Patent number: 6275566Abstract: A method and a system for x-ray treatment of, for example, cancer or restenosis prevention inside a living body is disclosed. A miniature x-ray tube (1) is provided with at least one pair of electrodes (6, 8), the electrodes alternatingly serving as anode and cathode, respectively. A power supply (13) is connected to the electrodes, and a switching unit of the power supply alternates the electrical potential across the electrodes. With the x-ray tube according to the invention the temperature increase at the site of treatment is limited, thereby providing an effective treatment without unduly prolonged treatment duration.Type: GrantFiled: April 24, 2000Date of Patent: August 14, 2001Assignee: Radi Medical Technologies ABInventors: Leif Smith, Lars Tenerz, Jonas Tiren, Pelle Rangsten
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Patent number: 5519247Abstract: A detector circuit, for example for optical radiation, has a detector diode (20) and an amplifier circuit (30) integrated with the diode in the same silicon wafer for amplification of the diode signal. The diode is designed as a lateral diode. The diode and the amplifier circuit are both produced in a homogeneously weakly doped silicon wafer (1).Type: GrantFiled: October 25, 1994Date of Patent: May 21, 1996Assignee: Asea Brown Boveri ABInventors: Richard Arbus, Kjell Bohlin, Paul Stephanson, Jonas Tiren
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Patent number: 4895500Abstract: A silicon micromechanical non-reverse valve. In a main surface of a silicon wafer there is provided a cavity and a cantilever beam. The beam extends over the cavity and is integrally formed with the wafer at its top portion. The beam is provided at a distance above the bottom wall of the cavity. A second wafer of silicon or glass is provided over the first silicon wafer and covers the cavity in order to form a chamber. A second wafer is provided with two openings one of which is situated within the outline of the beam and the other of which is situated outside said outline. The first opening acts as an inlet and the second opening as an outlet for the valve.Type: GrantFiled: April 7, 1989Date of Patent: January 23, 1990Inventors: Bertil Hok, Lars Tenerz, Jonas Tiren