Patents by Inventor Anna Hultin Stigenberg

Anna Hultin Stigenberg 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: 20070082214
    Abstract: A coated stainless steel strip product with a dense and evenly distributed aluminum layer on one side or both sides of said strip is provided. Said layer consists of essentially pure aluminum, the thickness of said layer is maximally 15 ?m, the tolerance of said layer is maximally +/?30% of the layer thickness, the Cr content of the steel strip substrate is at least 10%, and that the layer has such a good adhesion so that the coated steel strip can be bent 180° over a radius maximally equal to the thickness of said strip without showing any tendency to flaking or the like. The Al-coated strip product is suitable for applications in environments with high humidity or in wet conditions, such as outdoor life applications, sports and sea-life, household and personal care.
    Type: Application
    Filed: August 31, 2004
    Publication date: April 12, 2007
    Applicant: SANDVIK AB
    Inventor: Anna Hultin Stigenberg
  • Publication number: 20070072008
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip substrate is provided. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is suitable for shaving equipment, medical instruments, utility and industrial knives as well as saw applications.
    Type: Application
    Filed: October 30, 2006
    Publication date: March 29, 2007
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Publication number: 20070042204
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is useful for the manufacturing of doctor and coater blades for paper and printing industry.
    Type: Application
    Filed: October 30, 2006
    Publication date: February 22, 2007
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Publication number: 20070042205
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is useful for the manufacturing of doctor and coater blades for paper and printing industry.
    Type: Application
    Filed: October 30, 2006
    Publication date: February 22, 2007
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Patent number: 7147931
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip substrate is provided. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is suitable for shaving equipment, medical instruments, utility and industrial knives as well as saw applications.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: December 12, 2006
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Patent number: 7147932
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is useful for the manufacturing of doctor and coater blades for paper and printing industry.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: December 12, 2006
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Publication number: 20050064215
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is useful for the manufacturing of doctor and coater blades for paper and printing industry.
    Type: Application
    Filed: August 11, 2004
    Publication date: March 24, 2005
    Applicant: Sandvik AB
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Publication number: 20050064214
    Abstract: A coated steel strip product with a dense and hard abrasion resistant coating on one side or both sides of said strip substrate is provided. The thickness of said coating is in total maximally 25 ?m, the hardness of said coating is at least 600 HV and the tensile strength of the steel strip substrate is at least 1200 MPa. The coating is preferably applied by electron beam evaporation and the coating may be, e.g., of Al2O3. The coated metal strip is suitable for shaving equipment, medical instruments, utility and industrial knives as well as saw applications.
    Type: Application
    Filed: August 11, 2004
    Publication date: March 24, 2005
    Applicant: Sandvik AB
    Inventors: Anna Hultin Stigenberg, Mikael Schuisky
  • Patent number: 6475307
    Abstract: A composition and method for the manufacture of products of a precipitation hardenable martensitic stainless steel, the composition of which comprises at least 0.5% by weight of Cr and at least 0.5% by weight of Mo wherein the sum of Cr, Ni and Fe exceeds 50%. The method steps include smelting the material into a casting, hot extrusion followed by a number of cold deforming steps so as to obtain at least 50% martensite and finally an ageing treatment at 425-525° C. to obtain precipitation of quasicrystalline particles. Such material can be used in vehicle components where demands for corrosion resistance, high strength and good toughness are to be satisfied.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: November 5, 2002
    Assignee: Sandvik AB
    Inventors: Anna-Lena Nyström, Anna Hultin Stigenberg
  • Patent number: 5759308
    Abstract: A precipitation hardened metallic alloy is provided in which the strengthening is based on the precipitation of particles. The strengthening particles have a quasicrystalline structure, said structure being essentially maintained at aging times up to 1000 h and tempering treatments up to 650.degree. C., the strengthening involving an increase in tensile strength of at least 200 MPa.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: June 2, 1998
    Assignee: Sandvik AB
    Inventors: Anna Hultin-Stigenberg, Jan-Olof Nilsson, Ping Liu
  • Patent number: 5632826
    Abstract: A precipitation hardened metallic alloy is provided in which the strengthening is based on the precipitation of particles. The strengthening particles have a quasicrystalline structure, said structure being essentially maintained at aging times up to 1000 h and tempering treatments up to 650.degree. C., the strengthening involving an increase in tensile strength of at least 200 MPa.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: May 27, 1997
    Assignee: Sandvik AB
    Inventors: Anna Hultin-Stigenberg, Jan-Olof Nilsson, Ping Liu
  • Patent number: RE36382
    Abstract: Precipitation hardenable martensitic stainless steel of high strength combined with high ductility. The Iron-based steel comprises of about 10 to 14% chromium, about 7 to 11% nickel, about 0.5 to 6% molybdenum, up to 9% cobalt, about 0.5% to 4% copper, about 0.4 to 1.4% titanium, about 0.05 to 0.6% aluminium, carbon and nitrogen not exceeding 0.05% with iron as the remainder and all other elements of the periodic table not exceeding 0.5%.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: November 9, 1999
    Assignee: Sandvik AB
    Inventor: Anna Hultin-Stigenberg