Patents by Inventor Rolf Sundberg

Rolf Sundberg 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).

  • COPPER ALLOY AND METHOD FOR ITS MANUFACTURE
    Publication number: 20080251162
    Abstract: The invention relates to a copper alloy having high recrystallization temperature and good conductivity used in brazed heat exchangers which alloy consists of 0.1 to 0.3% in weight chromium. The invention also relates to a method for the manufacturing of the alloy which method consists of the following steps: casting, cold working, annealing and another cold working before brazing.
    Type: Application
    Filed: June 5, 2008
    Publication date: October 16, 2008
    Applicant: LUVATA OY
    Inventors: Mariann Sundberg, Rolf Sundberg, Sture Ostlund
  • Copper alloy and method for its manufacture
    Patent number: 7416620
    Abstract: The invention relates to a copper alloy having high recrystallization temperature and good conductivity used in brazed heat exchangers which alloy consists of 0.1 to 0.3% in weight chromium. The invention also relates to a method for the manufacturing of the alloy which method consists of the following steps: casting, cold working, annealing and another cold working before brazing.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: August 26, 2008
    Assignee: Luvata Oy
    Inventors: Mariann Sundberg, Rolf Sundberg, Sture Östlund
  • Copper alloy and method for its manufacture
    Publication number: 20040187978
    Abstract: The invention relates to a copper alloy having high recrystallization temperature and good conductivity used in brazed heat exchangers which alloy consists of 0.1 to 0.3% in weight chromium. The invention also relates to a method for the manufacturing of the alloy which method consists of the following steps: casting, cold working, annealing and another cold working before brazing.
    Type: Application
    Filed: April 9, 2004
    Publication date: September 30, 2004
    Applicant: OUTOKUMPU COPPER PRODUCTS OY.
    Inventors: Mariann Sundberg, Rolf Sundberg, Sture Ostlund
  • Alloys for brazing
    Patent number: 5429794
    Abstract: Alloys for brazing used in heat exchangers, particularly in radiators. The alloys contain 14-31% by weight zinc, 0.1-15% by weight iron, 0.001-0.05% by weight phosphorus and 0-0.09% by weight arsenic, the balance being copper and incidental impurities.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: July 4, 1995
    Assignee: Outokumpu Copper Radiator Strip AB
    Inventors: Anders Kamf, Leif Tapper, Rolf Sundberg