Patents by Inventor Karin ANTONSSON

Karin ANTONSSON 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).

  • Patent number: 11603585
    Abstract: The present disclosure relates to an austenitic stainless alloy comprising in weight % (wt %): C less than 0.03; Si less than 1.0; Mn less than or equal to 1.2; Cr 26.0 to 30.0; Ni 29.0 to 37.0; Mo 6.1 to 7.1 or (Mo+W/2) 6.1 to 7.1; N 0.25 to 0.36; P less than or equal to 0.04; S less than or equal to 0.03; Cu less than or equal to 0.4; balance Fe and unavoidable impurities and to the use thereof and to products made thereof. Thus, the austenitic stainless alloy comprises a low content of manganese in combination with a high content of nitrogen. The present disclosure also relates to the use of said austenitic stainless alloy, especially in highly corrosive environments and to products made of thereof.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: March 14, 2023
    Assignee: Sandvik Intellectual Property AB
    Inventors: Ulf Kivisakk, Karin Antonsson, Peter Stenvall
  • Patent number: 11248285
    Abstract: The present disclosure relates to a new duplex stainless steel. Furthermore, the present disclosure relates to a product comprising the duplex stainless steel, which method comprises the step of performing a heat treatment on an object comprising the duplex stainless steel at a predetermined temperature and during a predetermined time.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: February 15, 2022
    Assignee: Sandvik Intellectual Property AB
    Inventors: Eleonora Bettini, Raghuveer Gaddam, Karin Antonsson, Guocai Chai, Christina Haraldsson, Siriki Raveendra
  • Publication number: 20210198776
    Abstract: The present disclosure relates to an austenitic stainless alloy comprising in weight % (wt %): C less than 0.03; Si less than 1.0; Mn less than or equal to 1.2; Cr 26.0 to 30.0; Ni 29.0 to 37.0; Mo 6.1 to 7.1 or (Mo+W/2) 6.1 to 7.1; N 0.25 to 0.36; P less than or equal to 0.04; S less than or equal to 0.03; Cu less than or equal to 0.4; balance Fe and unavoidable impurities and to the use thereof and to products made thereof. Thus, the austenitic stainless alloy comprises a low content of manganese in combination with a high content of nitrogen. The present disclosure also relates to the use of said austenitic stainless alloy, especially in highly corrosive environments and to products made of thereof.
    Type: Application
    Filed: March 8, 2021
    Publication date: July 1, 2021
    Applicant: Sandvik Intellectual Property AB
    Inventors: Ulf KIVISAKK, Karin ANTONSSON, Peter STENVALL
  • Publication number: 20210156013
    Abstract: The present disclosure relates to a new duplex stainless steel. Furthermore, the present disclosure relates to a product comprising the duplex stainless steel, which method comprises the step of performing a heat treatment on an object comprising the duplex stainless steel at a predetermined temperature and during a predetermined time.
    Type: Application
    Filed: May 22, 2018
    Publication date: May 27, 2021
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Eleonora BETTINI, Raghuveer GADDAM, Karin ANTONSSON, Guocai CHAI, Christina HARALDSSON, Siriki RAVEENDRA
  • Patent number: 10968504
    Abstract: The present disclosure relates to an austenitic stainless alloy including in weight % (wt %): C less than 0.03; Si less than 1.0; Mn less than or equal to 1.2; Cr 26.0 to 30.0; Ni 29.0 to 37.0; Mo 6.1 to 7.1 or (Mo+W/2) 6.1 to 7.1; N 0.25 to 0.36; P less than or equal to 0.04 S less than or equal to 0.03; Cu less than or equal to 0.4; and a balance of Fe and unavoidable impurities. The austenitic stainless alloy has a low content of manganese in combination with a high content of nitrogen. The present disclosure also relates to the use of the austenitic stainless alloy, especially in highly corrosive environments and to products made of thereof.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: April 6, 2021
    Assignee: Sandvik Intellectual Property AB
    Inventors: Ulf Kivisakk, Karin Antonsson, Peter Stenvall
  • Publication number: 20210079499
    Abstract: The invention relates to an austenitic alloy comprising the following elements in weight %: C ?0.03; Si ?1.0; 5 Mn ?1.5; S ?0.03; P ?0.03; Cr 25.0 to 33.0; Ni 42.0 to 52.0; 10 Mo 6.0 to 9.0; N 0.07-0.11; Cu ?0.4; Balance Fe and unavoidable impurities; and characterized in that the austenitic alloy fulfills the following condition: ENi>1.864*ECr?19.92 wherein ECr=[wt % Cr]+[wt % Mo]+1.5*[wt % Si] and ENi=[wt % Ni]+30*[wt % C]+30*[wt % N]+0.5*[wt % Mn]+0.5*[wt % Cu]. The invention also relates to a manufacturing method and an object comprising said alloy. The alloy and objects made thereof have less than 0.3% intermetallic phases after solidification.
    Type: Application
    Filed: May 23, 2019
    Publication date: March 18, 2021
    Applicant: AB Sandvik Materials Technology
    Inventors: Karin ANTONSSON, Ulf KIVISĂ„KK
  • Publication number: 20180312948
    Abstract: The present disclosure relates to an austenitic stainless alloy comprising in weight % (wt %): C less than 0.03; Si less than 1.0; Mn less than or equal to 1.2; Cr 26.0 to 30.0; Ni 29.0 to 37.0; Mo 6.1 to 7.1 or (Mo+W/2) 6.1 to 7.1; N 0.25 to 0.36; P less than or equal to 0.04; S less than or equal to 0.03; Cu less than or equal to 0.4; balance Fe and unavoidable impurities and to the use thereof and to products made thereof. Thus, the austenitic stainless alloy comprises a low content of manganese in combination with a high content of nitrogen. The present disclosure also relates to the use of said austenitic stainless alloy, especially in highly corrosive environments and to products made of thereof.
    Type: Application
    Filed: October 19, 2016
    Publication date: November 1, 2018
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Ulf KIVISAKK, Karin ANTONSSON, Peter STENVALL