Patents by Inventor Antti Seppälä

Antti Seppälä 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: 20250153242
    Abstract: Disclosed are powder mixtures for use in additive manufacture, which comprise three particle fractions A, B and C with different median particle sizes, wherein the median particle sizes relate to each other as 0.2 to 0.5/1/1.2 to 2. These powder mixtures have higher apparent density and/or conditioned bulk density compared to conventional additive manufacture powders and thus allow for faster processing with less defects. Further disclosed is technology that relates to methods for the preparation of respective powder mixtures, methods and devices for the preparation of three-dimensional objects from such powder mixtures and three-dimensional objects, which have been prepared accordingly, as well as the use of the powder mixtures for reducing the amount of defects in additive manufacturing processes.
    Type: Application
    Filed: April 28, 2023
    Publication date: May 15, 2025
    Inventors: Hannu HEIKKINEN, Antti SEPPÄLÄ, Aki KUKKONEN, Jukka SIMOLA, Olli NYRHILÄ, Visa LUOTONEN
  • Publication number: 20250101559
    Abstract: Disclosed is a steel powder for additive manufacture of three-dimensional objects and in particular for the manufacture hot and cold work tools, wherein the steel combines the properties of carbon hardening and maraging steel. Such steels have been found to be readily processable and provide crack free objects with low distortion. Further disclosed is technology that relates to methods for the preparation of corresponding steel powders, methods for the manufacture of three-dimensional objects from corresponding steel powders and three-dimensional objects prepared by such methods, and the use of a corresponding steel powder for the preparation of die casting or injection moulding tools and for suppressing the formation of cracks in the preparation of three-dimensional objects from steel.
    Type: Application
    Filed: January 18, 2023
    Publication date: March 27, 2025
    Inventors: Antti SEPPÄLÄ, Mika MALMIVIRTA
  • Publication number: 20250050410
    Abstract: The present application is concerned with a powder mixture for additive manufacturing processes, wherein the powder mixture comprises a duplex steel powder component and an austenitic steel powder component, wherein the powder mixture comprises Cr in an amount of at least 21.3% by weight. The addition of the austenitic steel powder component increases the ductility of the duplex steel and reduces internal stresses which result in cracking in objects build with duplex steel. The present application is further concerned with methods for the preparation of such powder mixtures, methods and devices for the preparation of three-dimensional objects from the powder mixtures and three-dimensional objects, which have been prepared accordingly, as well as the use of an austenitic steel powder to suppress the formation of cracks in duplex steel three-dimensional objects.
    Type: Application
    Filed: September 19, 2022
    Publication date: February 13, 2025
    Inventors: Antti SEPPÄLÄ, Mika MALMIVIRTA
  • Publication number: 20220168596
    Abstract: A respirator includes a frame, a filter layer, and a face seal member. The frame has an outer side and an inner side. The frame defines an opening therethrough. The filter layer is mounted to the outer side of the frame and covers the opening of the frame. The filter layer is configured to prohibit permeation of aerosol, gas, and/or vapor contaminants therethrough. The face seal member is mounted to the inner side of the frame. The face seal member includes a seal contact area configured to engage a facial surface of a wearer. The face seal member incorporates a phase change material therein. The phase change material is configured to provide localized cooling by absorbing heat emitted by the wearer.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Inventors: Alyssa Sabolis, Michael Lee Parham, Amy Elizabeth Quiring, Ethan David Voss, Antti Seppälä, Gareth Roberts, Graham Peter Wilson, Troy Alan Baker, Carl Estcourt Tucker
  • Patent number: 11273333
    Abstract: A respirator includes a frame, a filter layer, and a face seal member. The frame has an outer side and an inner side. The frame defines an opening therethrough. The filter layer is mounted to the outer side of the frame and covers the opening of the frame. The filter layer is configured to prohibit permeation of aerosol, gas, and/or vapor contaminants therethrough. The face seal member is mounted to the inner side of the frame. The face seal member includes a seal contact area configured to engage a facial surface of a wearer. The face seal member incorporates a phase change material therein. The phase change material is configured to provide localized cooling by absorbing heat emitted by the wearer.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: March 15, 2022
    Assignee: Scott Technologies, Inc.
    Inventors: Alyssa Whitney Sabolis, Michael Parham, Amy Elizabeth Quiring, Ethan David Voss, Antti Seppälä, Gareth Roberts, Graham Peter Wilson, Troy Alan Baker, Carl Escort Tucker
  • Publication number: 20200155878
    Abstract: A half facepiece respirator has a shaped support piece supporting and fixing the position of a particle or paper filter insert or outsert with either the support piece or the particle filter incorporating a face sealing component. Placed within the shaped support piece, a grille may be placed in the lower section of the shaped support piece. Additionally the half facepiece includes a head harness having a release mechanism.
    Type: Application
    Filed: January 28, 2020
    Publication date: May 21, 2020
    Inventors: Antti SEPPÄLÄ, Robert Charles SUTTON, Amy Elizabeth QUIRING, Michael PARHAM
  • Patent number: 10556136
    Abstract: A half facepiece respirator has a shaped support piece supporting and fixing the position of a particle or paper filter insert or outsert with either the support piece or the particle filter incorporating a face sealing component. Placed within the shaped support piece, a grille may be placed in the lower section of the shaped support piece. Additionally the half facepiece includes a head harness having a release mechanism.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: February 11, 2020
    Assignee: Scott Technologies, Inc.
    Inventors: Antti Seppälä, Robert Charles Sutton, Amy Elizabeth Quiring, Michael Parham
  • Publication number: 20190255370
    Abstract: A half facepiece respirator has a shaped support piece supporting and fixing the position of a particle or paper filter insert or outsert with either the support piece or the particle filter incorporating a face sealing component. Placed within the shaped support piece, a grille may be placed in the lower section of the shaped support piece. Additionally the half facepiece includes a head harness having a release mechanism.
    Type: Application
    Filed: May 2, 2019
    Publication date: August 22, 2019
    Inventors: Antti Seppälä, Robert Charles Sutton, Amy Elizabeth Quiring, Michael Parham
  • Publication number: 20160001101
    Abstract: A respirator includes a frame, a filter layer, and a face seal member. The frame has an outer side and an inner side. The frame defines an opening therethrough. The filter layer is mounted to the outer side of the frame and covers the opening of the frame. The filter layer is configured to prohibit permeation of aerosol, gas, and/or vapor contaminants therethrough. The face seal member is mounted to the inner side of the frame. The face seal member includes a seal contact area configured to engage a facial surface of a wearer. The face seal member incorporates a phase change material therein. The phase change material is configured to provide localized cooling by absorbing heat emitted by the wearer.
    Type: Application
    Filed: September 14, 2015
    Publication date: January 7, 2016
    Inventors: Alyssa Whitney Sabolis, Michael Parham, Amy Elizabeth Quiring, Ethan David Voss, Antti SEPPÄLÄ, Gareth Roberts, Graham Peter Wilson, Troy Alan Baker, Carl Escort Tucker
  • Publication number: 20150053206
    Abstract: A half facepiece respirator has a shaped support piece supporting and fixing the position of a particle or paper filter insert or outsert with either the support piece or the particle filter incorporating a face sealing component. Placed within the shaped support piece, a grille may be placed in the lower section of the shaped support piece. Additionally the half facepiece includes a head harness having a release mechanism.
    Type: Application
    Filed: October 30, 2014
    Publication date: February 26, 2015
    Inventors: Antti Seppälä, Robert Sutton, Amy Elizabeth Quiring, Michael Parham