Patents by Inventor Stefan Hellstrom

Stefan Hellstrom 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: 20170240671
    Abstract: The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.
    Type: Application
    Filed: September 15, 2015
    Publication date: August 24, 2017
    Inventors: Francis Costa, Mattias Berqvist, Stefan Hellstrom, Bert Broeders, Girish Suresh Galgali, Bernt-Ake Sultan, Tanja Piel, Bart Verheule, Jeroen Oderkerk
  • Publication number: 20170240670
    Abstract: The present invention relates to a polymer composition, to a layer element, preferably to at least one layer element of a photovoltaic module, comprising the polymer composition and to an article which is preferably said at least one layer of a layer element, preferably of a layer element of a photovoltaic module.
    Type: Application
    Filed: September 15, 2015
    Publication date: August 24, 2017
    Inventors: Francis Costa, Mattias Berqvist, Stefan Hellstrom, Bert Broeders, Girish Suresh Galgali, Bernt-Ake Sultan, Tanja Piel, Bart Verheule, Jeroen Oderkerk
  • Publication number: 20170107356
    Abstract: The present invention relates to a polymer composition comprising a surfactant interacting additive, and wherein the polymer composition further comprises at least one silanol condensation catalyst, wherein each catalyst is selected from: i) a compound of formula I ArSO3H (I) or a precursor thereof, wherein Ar is an 1 to 4 alkyl groups substituted aryl, wherein the aryl is phenyl or naphthyl, and wherein each alkyl group, independently, is a linear or branched alkyl with 10 to 30 carbons, wherein the total number of carbons in the alkyl groups is in the range of 20 to 80 carbons; ii) a derivative of i) selected from the group consisting of an anhydride, an ester, an acetylate, an epoxy blocked ester and an amine salt thereof which is hydrolysable to the corresponding compound of formula I; and iii) a metal salt of i) wherein the metal ion is selected from the group consisting of copper, aluminum, tin and zinc; an article, for example, a coating, a wire or a cable, comprising the polymer composition, a process
    Type: Application
    Filed: December 17, 2014
    Publication date: April 20, 2017
    Inventors: Martin ANKER, Perry NYLANDER, Roger CARLSSON, Bernt-Ake SULTAN, Stefan HELLSTROM, Kristian DAHLEN, Ola FAGRELL
  • Publication number: 20160319148
    Abstract: The present invention relates to a polymer composition, which is a silanol condensation catalyst masterbatch, comprises a matrix, comprising a silane containing drying agent, and at least one silanol condensation catalyst, wherein each catalyst has a water content which is 0.
    Type: Application
    Filed: December 17, 2014
    Publication date: November 3, 2016
    Inventors: Ola FAGRELL, Stefan HELLSTROM, Bernt-Ake SULTAN, Perry NYLANDER, Martin ANKER, Kristian DAHLEN, Asa HERMANSSON
  • Publication number: 20160312012
    Abstract: The present invention relates to a polymer composition comprising a surfactant interacting additive, and wherein the polymer composition further comprises at least one silanol condensation catalyst, wherein each catalyst is selected from: i) a compound of formula I ArSO3H (I) or a precursor thereof, wherein Ar is an 1 to 4 alkyl groups substituted aryl, wherein the aryl is phenyl or naphthyl, and wherein each alkyl group, independently, is a linear or branched alkyl with 10 to 30 carbons, wherein the total number of carbons in the alkyl groups is in the range of 20 to 80 carbons; ii) a derivative of i) selected from the group consisting of an anhydride, an ester, an acetylate, an epoxy blocked ester and an amine salt thereof which is hydrolysable to the corresponding compound of formula I; and iii) a metal salt of i) wherein the metal ion is selected from the group consisting of copper, aluminum, tin and zinc; an article, for example, a coating, a wire or a cable, comprising the polymer composition, a process
    Type: Application
    Filed: December 14, 2014
    Publication date: October 27, 2016
    Inventors: Martin ANKER, Perry NYLANDER, Roger CARLSSON, Bernt-Ake SULTAN, Stefan HELLSTROM, Kristian DAHLEN, Ola FAGRELL
  • Patent number: 8018105
    Abstract: An electromagnetic vibrator for use in a portable communication device includes a housing including a track directed in a first dimension; a coiling including at least one coil turn, oriented in a second dimension essentially perpendicular to the first dimension, coiled around the track and being arranged to receive an electric voltage; a permanent magnet assembly arranged for motion along the track to which the permanent magnet assembly is tightly fitted; and a ferrofluid mixture placed between the track and the permanent magnet assembly allowing motion of the permanent magnet assembly in the first dimension in dependence of the electric voltage as supplied to the coiling.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: September 13, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Mats Erixon, Mats Wolf, Stefan Hellstrom
  • Publication number: 20100009066
    Abstract: The present invention relates to a method for providing a composition comprising water-soluble aggregates comprising an oxidized conductive polymer and a polymeric acid, comprising: providing a preparation comprising an oxidized or oxidizable conductive polymer and an organic solvent; adding an aqueous preparation comprising a polymeric acid; optionally oxidizing the oxidizable conductive polymer; and allowing the oxidized conductive polymer to interact with the polymeric acid to form an aqueous composition comprising water-soluble aggregates comprising an oxidized conductive polymer and a polymeric acid. The method can be used for providing waterbased casting or printing compositions.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 14, 2010
    Inventors: Mats Sandberg, Stefan Hellstrom
  • Publication number: 20080174187
    Abstract: An electromagnetic vibrator for use in a portable communication device (90) comprising a housing (20,30,40,50,60,70,80) comprising a track directed in a first dimension, a coiling (22,82) comprising at least one coil turn, oriented in a second dimension essentially perpendicular to the first dimension, coiled around the track and being arranged to receive an electric voltage, a permanent magnet assembly (26,32,34,42,52,62,72,84) arranged for motion along the track to which said permanent magnet assembly is tightly fitted, and a ferrofluid mixture placed between the track and the permanent magnet assembly (26,32,34,42,52,62,72,84), allowing motion of the permanent magnet assembly (26,32,34,42,52,62,72,84) in the first dimension in dependence of the electric voltage as supplied to the coiling (22,82).
    Type: Application
    Filed: March 15, 2006
    Publication date: July 24, 2008
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Mats Erixon, Mats Wolf, Stefan Hellstrom
  • Patent number: 6295193
    Abstract: An electronic circuit board (6) has a surface. with at least one conducting island (7), and the surface is arranged proximate to a first insulating material (3) having a number of holes (8) which correspond to at least some of the conducting islands (7) and through which the conducting islands (7) may be reached. At an end thereof facing the surface, each hole (9) has an area which is larger than the area of the corresponding conducting island (7). A conducting area (10; 14, 15, 16, 17) adapted to carry off an electrostatic discharge (ESD) is located on the surface proximate to the conducting islands (7) and within the area of the holes (8), and elements (9; 19) of a second insulating material are provided in the holes (8). Thus the electronic circuit board can withstand electrostatic discharges without the circuitry of the board being damaged.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: September 25, 2001
    Assignee: Telefonaktiebologate LM Ericsson (publ)
    Inventors: Johan Ulf Mercke, Jonas Bengtsson, Stefan Hellström, Michael Kellerman