Patents by Inventor Ulf Helmersson

Ulf Helmersson 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: 20230151476
    Abstract: A method (200) for monitoring process conditions in a plasma PVD process as well as a method (300) for controlling a plasma PVD process are disclosed. The methods are performed in an apparatus (1) configured therefore. In accordance with the methods, an oscillating voltage signal is applied to a target (3), arranged in the apparatus (1), by means of a radio frequency generator 15). The response from the applied oscillating voltage signal is recorded by means of a radio frequency sensor (16). Based on the recorded response, information regarding at least one plasma process condition is derived. A computer program and a computer-readable medium are also disclosed.
    Type: Application
    Filed: March 29, 2021
    Publication date: May 18, 2023
    Applicant: IONAUTICS AB
    Inventors: Daniel LUNDIN, Ulf HELMERSSON
  • Patent number: 11351602
    Abstract: A process for producing magnetic nanowires of high quality and a good production yield is disclosed. The process comprises sputtering a target of a magnetic material using a plasma, growing nanoparticles from the sputtered matter to magnetic nanoparticles and collecting the magnetic nanoparticles on a substrate in the form of nanowires.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: June 7, 2022
    Inventors: Ulf Helmersson, Nils Brenning, Sebastian Ekeroth
  • Publication number: 20220065234
    Abstract: An ion thruster (1) and a method for providing trust is disclosed. The ion thruster comprises a sputtering magnetron (2), a target (3) arranged at the sputtering magnetron, and a second electrode (4). During a first pulse, the target is at a negative potential (UHiP) with respect to a second electrode and a plasma is sustained whereby atoms are sputtered from the target and at least a portion thereof become ionised by the plasma. During a second pulse, a reversed potential (Urev) is applied between the target and the second electrode. This increases the potential of a volume of the plasma adjacent to the target, which in turn accelerates ions in a direction away from the target. Thereby, thrust is provided. The disclosure further relates to a computer program and a computer readable medium, as well as a spacecraft comprising the ion thruster.
    Type: Application
    Filed: December 23, 2019
    Publication date: March 3, 2022
    Inventors: Nils BRENNING, Ulf HELMERSSON
  • Publication number: 20190308239
    Abstract: A process for producing magnetic nanowires of high quality and a good production yield is disclosed. The process comprises sputtering a target of a magnetic material using a plasma, growing nanoparticles from the sputtered matter to magnetic nanoparticles and collecting the magnetic nanoparticles on a substrate in the form of nanowires.
    Type: Application
    Filed: December 8, 2017
    Publication date: October 10, 2019
    Inventors: Ulf HELMERSSON, Nils BRENNING, Sebastian EKEROTH
  • Patent number: 9447493
    Abstract: A high production rate plasma sputtering process for producing particles having a size of 10 ?m or less is disclosed. The process causes ionization of at least a part of the sputtered target atoms and is performed at such parameters that the pick-up probability of ionized sputtered target atoms on the surface of grains is high.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: September 20, 2016
    Assignee: Plasmadvance AB
    Inventors: Ulf Helmersson, Nils Brenning, Daniel Soderstrom
  • Publication number: 20140027269
    Abstract: The sputtering process according to the present disclosure comprises providing a target consisting of carbon in a sputtering apparatus, introducing a process gas essentially consisting of a neon or a gas mixture comprising at least 60% neon into said apparatus, applying a pulsed power discharge to said target in order to create a plasma of said process gas, sputtering said target by means of said plasma. The process is able to ionize a significant amount of sputtered carbon atoms.
    Type: Application
    Filed: March 26, 2012
    Publication date: January 30, 2014
    Applicant: Ionautics AB
    Inventors: Ulf Helmersson, Nils Brenning, Asim Aijaz
  • Patent number: 8540786
    Abstract: The present invention relates to a method of producing coatings of metal oxide, nitride or carbide or mixtures thereof, whereby operating a High Power Impulse Magnetron Sputtering, HIPIMS, discharged on one or more target (s) (3), in an argon and reactive gas mixture (5, 6), at peak pulse power higher than 200 Wcm?2, in which the deposition rate is improved and in the need for partial reactive gas pressure feedback systems is eliminated.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: September 24, 2013
    Assignee: Sandvik Intellectual Property AB
    Inventors: Erik Wallin, Ulf Helmersson
  • Publication number: 20120305385
    Abstract: A high production rate plasma sputtering process for producing particles having a size of 10 ?m or less is disclosed. The process causes ionization of at least a part of the sputtered target atoms and is performed at such parameters that the pick-up probability of ionized sputtered target atoms on the surface of grains is high.
    Type: Application
    Filed: February 22, 2011
    Publication date: December 6, 2012
    Applicant: TIÃ… AB
    Inventors: Ulf Helmersson, Nils Brenning, Daniel Soderstrom
  • Publication number: 20100183900
    Abstract: The present invention relates to a method of producing coatings of metal oxide, nitride or carbide or mixtures thereof, whereby operating a High Power Impulse Magnetron Sputtering, HIPIMS, discharged on one or more target (s) (3), in an argon and reactive gas mixture (5, 6), at peak pulse power higher than 200 Wcm?2, in which the deposition rate is improved and in the need for partial reactive gas pressure feedback systems is eliminated.
    Type: Application
    Filed: May 28, 2008
    Publication date: July 22, 2010
    Applicant: Sandvik Intellectual Property AB
    Inventors: Erik Wallin, Ulf Helmersson