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Method of treating waste alloys for the purpose of removing therefrom certain constituents whose presence renders the alloys unsuitable for certain uses

US 1,819,607 A · Inventors: PAUL KEMP

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Granted August 18, 1931. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by August 18, 1948.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJune 23, 1928
GrantedAugust 18, 1931
Term endedAugust 18, 1948
Application number—
Classification (CPC)C22C3/00
Length1 pages

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1929193119331935193719391941194319451947Application filedJune 23, 1928Patent grantedAug 18, 1931Term endedAug 18, 1948

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Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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