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Thermally stable esters

US 3,290,357 A · Inventors: FEIN MARVIN M et al.

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Overview

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Read the whole patent

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.

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Why it's free to use

  • Granted December 6, 1966. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by December 6, 1983.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledNovember 13, 1963
GrantedDecember 6, 1966
Term endedDecember 6, 1983
Application number—
Classification (CPC)C07F5/027 +1 more
Length4 pages

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

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Everything on this page comes from the USPTO record linked above.