Patents by Inventor Raymond C. Asher

Raymond C. Asher 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).

  • Zirconium alloys
    Patent number: 4212686
    Abstract: The present invention concerns improved corrosion resistant zirconium alloys consisting of 0.25 to 1.50% by weight of niobium, 0.025 to 0.20% by weight of tin, 0.02 to 1.00% by weight of combined chromium and molybdenum, and the remainder zirconium except for unavoidable impurities.Corrosion tests show that the above alloys have a corrosion rate comparable to Zircaloy 2 at low temperatures and a much better performance at high temperatures. Further the hydrogen uptake of the present alloys are considerably lower than for Zircaloy 2 over the whole temperature range 290.degree.-500.degree. C., and reactor tests have revealed that the good corrosion behavior is maintained under neutron irradiation. The new alloys exhibit smaller grain growth than Zircaloy 2 at annealing temperatures.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: July 15, 1980
    Assignees: AB Atomenergi, Atomenergikommissionen, Institutt for Atomenergi, United Kingdom Atomic Energy Authority, Valtion Teknillinen Tutkimuskeskus
    Inventors: Liv Lunde, Raymond C. Asher, Gerard Slattery, Frank W. Trowse, Christopher Tyzack, Gustaf C. stberg, Erich Tolksdorf