Patents by Inventor Mats Carlsson

Mats Carlsson 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: 20190139429
    Abstract: The inventive concept relates to a method for providing digital educational material. The digital educational material is associated with an attribute set, the attribute set comprising a number of indirect attributes. The method comprises receiving input data related to at least one attribute of the attribute set; identifying a subset of the digital educational material, the subset comprising posts comprising the at least one attribute; sorting the posts based on the attribute set; and presenting the posts. The inventive concept further relates to a data processing apparatus for providing digital educational material.
    Type: Application
    Filed: June 14, 2017
    Publication date: May 9, 2019
    Inventors: Ian RATTIGAN, Ted MÖLLER, Mats CARLSSON, Daniel RONNSTAM
  • Patent number: 8599054
    Abstract: A modulator is provided in operative engagement with a sensor element having a plurality of electrodes. The modulator has a single-bit quantizer electrically connected to a digital accumulator. The accumulator accumulates output information received from the single-bit quantizer. The accumulator converts the accumulated output information received from the single-bit quantizer to a multi-bit feedback signal and sends the multi-bit feedback signal in a primary feedback loop back to the sensor element. The quantizer sends a single-bit feedback signal in a secondary feedback loop back to a point before the quantizer.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: December 3, 2013
    Assignee: PGS Geophysical AS
    Inventors: Mats Carlsson, David Westberg, Gert Andersson, Nils Hedenstierna, Sjoerd Haasl
  • Patent number: 8539809
    Abstract: The present invention relates to the field of gas measurements, andmore specifically to the field of testing the measuring function of a measuring device (7) for gas measurements, the measuring device (7) including a gas sensor (9) generating at least one output signal. The method includes connecting at least one simulation signal to the measuring device (7) and/or feeding a gas mixture to the measuring device wherein the magnitude of the concentration of a gas to be measured in the gas mixture is known. The invention also relates to a simulation device (1) for connection to the measuring device (7) for gas measurements when testing the measuring function of the measuring device (7). The simulation device (1) generates at least one simulation signal which can attain at least one signal level, wherein a certain signal value corresponds to a certain gas concentration.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: September 24, 2013
    Assignee: Aerocrine AB
    Inventors: Tryggve Hemmingsson, Mats Carlsson
  • Patent number: 8367951
    Abstract: A retrofit diverter switch which has a mechanical and electrical interface that is compatible with the existing designs is provided. The diverter switch may include a vacuum switch. The feature where the mechanical and electrical interface is compatible enables a retrofit from traditional On Load Tap Changers to a vacuum based on Load Tap Changers. The diverter switch may be retrofitted into existing tap changer housings. Retrofitting from traditional to vacuum based, traditional to vacuum based and up rating, and vacuum up rating may be possible. Also, the diverter switch may include modular components that allow for easy customization of the diverter switch for different applications.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: February 5, 2013
    Assignee: ABB Technology Ltd.
    Inventors: Petter Nilsson, Robert L. Hirt, Hans Johansson, Mats Carlsson, Lars Jonsson
  • Publication number: 20120229317
    Abstract: A modulator is provided in operative engagement with a sensor element having a plurality of electrodes. The modulator has a single-bit quantizer electrically connected to a digital accumulator. The accumulator accumulates output information received from the single-bit quantizer. The accumulator converts the accumulated output information received from the single-bit quantizer to a multi-bit feedback signal and sends the multi-bit feedback signal in a primary feedback loop back to the sensor element. The quantizer sends a single-bit feedback signal in a secondary feedback loop back to a point before the quantizer.
    Type: Application
    Filed: February 6, 2012
    Publication date: September 13, 2012
    Applicant: PGS Geophysical AS
    Inventors: Mats Carlsson, David Westberg, Gert Andersson, Nils Hedenstierna, Sjoerd Haasl
  • Publication number: 20120139627
    Abstract: An amplifier is provided that has a first loop interacting with a second loop. A feedback signal and input signal are provided to the amplifier. The first loop and the second loop interact with the input signal to nullify the feedback signal.
    Type: Application
    Filed: April 23, 2011
    Publication date: June 7, 2012
    Inventor: Mats Carlsson
  • Patent number: 8018284
    Abstract: An output-impedance in a power amplifier is provided. A first transistor QBUF of a buffer stage is connected to a first side of a resistor RF and a second transistor QAMP to a second opposite side of the resistor RF. The first transistor feeds a current IRF to the second resistor QAMP. The current IRF at the second transistor is copied and multiplied by a factor (n) to form an output current IOUT, as (1+n)*IRF. The current IRF is fed back to the first transistor and the output current IOUT is fed to a load resistor R.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: September 13, 2011
    Inventors: Mats Carlsson, Daniel Bjork
  • Publication number: 20110156818
    Abstract: An output-impedance in a power amplifier is provided. A first transistor QBUF of a buffer stage is connected to a first side of a resistor RF and a second transistor QAMP to a second opposite side of the resistor RF. The first transistor feeds a current IRF to the second resistor QAMP. The current IRF at the second transistor is copied and multiplied by a factor (n) to form an output current IOUT, as (1+n)* IRF. The current IRF is fed back to the first transistor and the output current IOUT is fed to a load resistor R.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Inventors: Mats Carlsson, Daniel Bjork
  • Publication number: 20110031220
    Abstract: A retrofit diverter switch which has a mechanical and electrical interface that is compatible with the existing designs is provided. The diverter switch may include a vacuum switch. The feature where the mechanical and electrical interface is compatible enables a retrofit from traditional On Load Tap Changers to a vacuum based on Load Tap Changers. The diverter switch may be retrofitted into existing tap changer housings. Retrofitting from traditional to vacuum based, traditional to vacuum based and up rating, and vacuum up rating may be possible. Also, the diverter switch may include modular components that allow for easy customization of the diverter switch for different applications.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 10, 2011
    Applicant: ABB Technology Ltd.
    Inventors: Petter Nilsson, Robert L. Hirt, Hans Johansson, Mats Carlsson, Lars Jonsson
  • Patent number: 7722132
    Abstract: The present invention relates to an internal combustion engine (1) of the Otto type, comprising an induction pipe (3) in conjunction with the engine's (1) cylinders, a brake servo unit (15), a flow connection (29) for evacuating air from the brake servo unit (15) to the induction pipe (3) for the purpose of building up a vacuum inside the brake servo unit (15), in conjunction with which a Venturi unit (25) is arranged in the flow connection (17, 19) to assist with the building up of the aforementioned vacuum. The internal combustion engine is characterized in that the flow connection (17, 19) comprises a bypass line (29) having a lower flow resistance than the Venturi unit (25), the bypass line (29) being intended to connect the evacuated air past the Venturi unit (25) in the event of a transient vacuum in the induction pipe (3).
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: May 25, 2010
    Assignees: GM Global Technology Operations, Inc, Fiat Auto S.p.A.
    Inventor: Mats Carlsson
  • Publication number: 20100121212
    Abstract: An adapter (1) for an exhaled breath measurement apparatus (2), comprising a first inlet (3) for tidal breathing, a second inlet (4) for air free from one or more component to be measured, through which and a first one-way valve (5) air flows when a test person inhales through the adapter (1) at the first inlet (3), and an outlet (6) for exhaled breath having a second one-way valve (7). A sample tubing (11) is positioned next to the first inlet (3) for tidal breathing for a continuous sample from the exhaled breath immediately inside the adapter (1), upstream the second one-way valve (7) at the outlet (6) for exhaled breath. An exhaled breath measurement apparatus (2) with such adapter (1). A method for measuring exhaled breath during tidal breathing by sampling continuously in an adapter (1) at a first inlet (3) into which a test person breathes, the sampling taking place upstream of an outlet (6) for exhaled breath.
    Type: Application
    Filed: April 4, 2008
    Publication date: May 13, 2010
    Inventors: Mats Carlsson, Hans Peter Starck-Johnsson
  • Publication number: 20100089121
    Abstract: The present invention relates to the field of gas measurements, and more specifically to the field of testing the measuring function of a measuring device (7) for gas measurements, the measuring device (7) including a gas sensor (9) generating at least one output signal. The method includes connecting at least one simulation signal to the measuring device (7) and/or feeding a gas mixture to the measuring device wherein the magnitude of the concentration of a gas to be measured in the gas mixture is known. The invention also relates to a simulation device (1) for connection to the measuring device (7) for gas measurements when testing the measuring function of the measuring device (7). The simulation device (1) generates at least one simulation signal which can attain at least one signal level, wherein a certain signal value corresponds to a certain gas concentration.
    Type: Application
    Filed: January 28, 2008
    Publication date: April 15, 2010
    Applicant: Aerocrine AB
    Inventors: Tryggve Hemmingsson, Mats Carlsson
  • Patent number: 7208093
    Abstract: The present invention is a method of producing a chromatographic separation matrix, wherein porous polymeric particles comprised of two layers with different properties are prepared in a two-phase system by (a) providing porous polymeric particles with reactive groups on their surfaces; (b) washing said particles with a first solvent and draining the particles to enclose a first phase; (c) wetting the outer layer of the particles by adding a second solvent, which is essentially insoluble in the first solvent; (d) reacting the reactive groups in the outer layer by adding a reagent, which is essentially non-reactive in the first solvent; and (e) coupling of chromatographic binding groups to the reactive groups in the inner layer. The invention also encompasses a porous polymer particle suitable for use as a chromatographic separation matrix and a process of separation, wherein a matrix according to the invention is used.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: April 24, 2007
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Hans Berg, Philippe Busson, Mats Carlsson
  • Publication number: 20070063579
    Abstract: The present invention relates to an internal combustion engine (1) of the Otto type, comprising an induction pipe (3) in conjunction with the engine's (1) cylinders, a brake servo unit (15), a flow connection (29) for evacuating air from the brake servo unit (15) to the induction pipe (3) for the purpose of building up a vacuum inside the brake servo unit (15), in conjunction with which a Venturi unit (25) is arranged in the flow connection (17, 19) to assist with the building up of the aforementioned vacuum. The internal combustion engine is characterized in that the flow connection (17, 19) comprises a bypass line (29) having a lower flow resistance than the Venturi unit (25), the bypass line (29) being intended to connect the evacuated air past the Venturi unit (25) in the event of a transient vacuum in the induction pipe (3).
    Type: Application
    Filed: May 25, 2006
    Publication date: March 22, 2007
    Inventor: Mats Carlsson
  • Patent number: 7074335
    Abstract: The present invention is a method of producing porous beads, which comprises the steps of providing a first liquid phase comprising a bead matrix material and essentially edgy templating particle(s), said particle(s) being treated with a surface modifying agent; providing a second liquid phase which is immiscible with the first liquid phase; contacting the first phase and the second phase under conditions resulting in an emulsion of droplets comprised of the first liquid phase dispersed in the continuous second liquid phase; transforming the droplets to mesoporous beads by solidification of the liquid; and removing the templating particle(s) from the beads without causing any essential change of the surrounding bead, whereby hierarchical networks of pores are provided in the beads.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 11, 2006
    Assignee: GE Healthcare Bio-Sciences AB
    Inventors: Hans Berg, Mats Carlsson, Anders Larsson
  • Publication number: 20060025585
    Abstract: A method for the manufacture of a solid porous separation material based on a polysaccharide, said method comprising the steps of: (a) providing an aqueous solution (I) of a polysaccharide, (b) solidifying the solution, preferably by transforming the solution to a gel, and (c) optionally cross-linking the polysaccharide, with the proviso that, if step (c) is present, steps (b) and (c) may be carried out simultaneously. The method is characterised in that the polysaccharide provided in step (a) is modified by being inter-molecularly cross-linked to an extent such that the viscosity of solution (I) is at least 110%, preferably at least 200%, of the viscosity of an aqueous solution (II) of the corresponding polysaccharide which has not been inter-molecularly cross-linked and which is present in the same concentration as the inter-molecularly cross-linked polysaccharide is in solution (I).
    Type: Application
    Filed: September 12, 2005
    Publication date: February 2, 2006
    Inventors: Hans Berg, Mats Carlsson
  • Patent number: 6984733
    Abstract: A method for the manufacture of a solid porous separation material based on a polysaccharide, said method comprising the steps of: (a) providing an aqueous solution (I) of a polysaccharide, (b) solidifying the solution, preferably by transforming the solution to a gel, and (c) optionally crosslinking the polysaccharide, with the proviso that, if step (c) is present, steps (b) and (c) may be carried out simultaneously.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: January 10, 2006
    Assignee: Amersham Biosciences AB
    Inventors: Hans Berg, Mats Carlsson
  • Publication number: 20050242037
    Abstract: The present invention is a method of producing a chromatographic separation matrix, wherein porous polymeric particles comprised of two layers with different properties are prepared in a two-phase system by (a) providing porous polymeric particles with reactive groups on their surfaces; (b) washing said particles with a first solvent and draining the particles to enclose a first phase; (c) wetting the outer layer of the particles by adding a second solvent, which is essentially insoluble in the first solvent; (d) reacting the reactive groups in the outer layer by adding a reagent, which is essentially non-reactive in the first solvent; and (e) coupling of chromatographic binding groups to the reactive groups in the inner layer. The invention also encompasses a porous polymer particle suitable for use as a chromatographic separation matrix and a process of separation, wherein a matrix according to the invention is used.
    Type: Application
    Filed: August 18, 2003
    Publication date: November 3, 2005
    Inventors: Hans Berg, Philippe Busson, Mats Carlsson
  • Publication number: 20050077221
    Abstract: The present invention is a method of producing porous beads, which comprises the steps of providing a first liquid phase comprising a bead matrix material and essentially edgy templating particle(s), said particle(s) being treated with a surface modifying agent; providing a second liquid phase which is immiscible with the first liquid phase; contacting the first phase and the second phase under conditions resulting in an emulsion of droplets comprised of the first liquid phase dispersed in the continuous second liquid phase; transforming the droplets to mesoporous beads by solidification of the liquid; and removing the templating particle(s) from the beads without causing any essential change of the surrounding bead, whereby hierarchical networks of pores are provided in the beads.
    Type: Application
    Filed: December 17, 2002
    Publication date: April 14, 2005
    Inventors: Hans Berg, Mats Carlsson, Anders Larsson
  • Patent number: 6706188
    Abstract: A method for recovering a desired component from a sample solution with beads under stabilized fluidized bed conditions is provided. Also provided are support beads for use in downstream processing which comprise a polymer matrix into which glass or silica particles have been incorporated.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 16, 2004
    Assignee: Amersham Biociences AB
    Inventors: Mats Carlsson, Jan-Gunnar Gustafsson, Per Hedman, Per-Åke Pernemalm, Jörgen Lönngren, Annika Lindgren