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Unsaturated dialkyl substituted 2, 3-epoxyacid esters

US 2,889,340 A · Inventors: JOSEPH LEVY et al.

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  • Granted June 2, 1959. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by June 2, 1976.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 2, 1956
GrantedJune 2, 1959
Term endedJune 2, 1976
Application number—
Classification (CPC)C07D303/48 +1 more
Length4 pages

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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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