Patents by Inventor Alvin J. Jacobs

Alvin J. Jacobs 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).

  • Reduction of manganese content of stainless alloys to mitigate corrosion of neighboring in-core zirconium based components
    Patent number: 5539794
    Abstract: An improved stainless steel composition and an improved stainless Ni-based alloy are disclosed for use in nuclear reactor environments. The improved stainless alloys include a stainless steel and a stainless nickel based alloy that are particularly well adapted for use in reactor components that are positioned adjacent to components formed from a zirconium based metal. The improved stainless steel is an austenitic stainless steel material that include less than approximately 0.2 percent manganese by weight, but does include sufficient austenitic stabilizer to prevent a martensitic transformation during fabrication or use in a reactor environment. In one preferred embodiment, the stainless alloy is formed without any significant amount of manganese.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: July 23, 1996
    Assignee: General Electric Company
    Inventors: Alvin J. Jacobs, Gerald M. Gordon, Richard A. Proebstle, Mickey O. Marlowe, Ronald B. Adamson
  • Treatment for inhibiting irradiation induced stress corrosion cracking in austenitic stainless steel
    Patent number: 4878962
    Abstract: A heat treatment method for inhibiting irradiation induced stress corrosion cracking in stainless steel and related nickel-chromium alloys.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: November 7, 1989
    Assignee: General Electric Company
    Inventors: Alvin J. Jacobs, Gerald M. Gordon
  • Austenitic stainless steel alloy
    Patent number: 4863682
    Abstract: A chromium-nickel austenitic stainless steel alloy composition, including specific proportions of carbon with a combination of niobium and tantalum.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: September 5, 1989
    Assignee: General Electric Company
    Inventors: David J. Coates, Gerald M. Gordon, Alvin J. Jacobs, David W. Sandusky
  • Light water reactor cores with increased resistance to stress corrosion cracking
    Patent number: 4836976
    Abstract: Irradiation assisted stress corrosion cracking occurring in the metallic core components of light water nuclear reactors is reduced by the use of austenitic stainless steel alloys containing a maximum of about 0.03% nitrogen, as well as about 0.025% to about 0.067% carbon, about 1.5% to about 2.0% manganese, a maximum of about 0.005% phosphorus, a maximum of about 0.05% silicon, and a maximum of about 0.005% sulfur.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: June 6, 1989
    Assignee: General Electric Company
    Inventor: Alvin J. Jacobs
  • Treatment for overcoming irradiation induced stress corrosion cracking in austenitic alloys such as stainless steel
    Patent number: 4699671
    Abstract: Stress corrosion cracking of austenitic stainless steel or nickel-based alloys attributable at least in part to exposure to irradiation is reduced with a specific heat treatment.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: October 13, 1987
    Assignee: General Electric Company
    Inventors: Alvin J. Jacobs, Gerald M. Gordon