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Production of silicon alloys containing one or more relatively volatile metals

US 3,138,450 A · Inventors: KURT FIGGE et al.

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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 June 23, 1964. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by June 23, 1981.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMarch 24, 1960
GrantedJune 23, 1964
Term endedJune 23, 1981
Application number—
Classification (CPC)—
Length3 pages

Timeline

Timeline From USPTO dates

1961196419671970197319761979Application filedMarch 24, 1960Patent grantedJune 23, 1964Term endedJune 23, 1981

Sources & verification

Official USPTO records

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

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comJustia PatentsFull text, claims and classification.patents.justia.comFreePatentsOnlineFull text and PDF.freepatentsonline.comEspacenetForeign family and legal status.European Patent Office

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