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Sigma, sigma-bis (2, 2-dialkyl-4, 5-dihydro-1, 3, 2-dithiarsenolyl) 1, 2-ethanethiols

US 3,152,159 A · Inventors: EPSTEIN PETER F et al.

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Why it's free to use

  • Granted October 6, 1964. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 6, 1981.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledOctober 3, 1961
GrantedOctober 6, 1964
Term endedOctober 6, 1981
Application number—
Classification (CPC)C07F9/72 +1 more
Length3 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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