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Deasphalting mixtures of hydrocarbons

US 2,587,643 A · Inventors: MYERS HAROLD C

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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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  • Granted March 4, 1952. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by March 4, 1969.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledAugust 27, 1947
GrantedMarch 4, 1952
Term endedMarch 4, 1969
Application number—
Classification (CPC)C10G21/003
Length6 pages

Timeline

Timeline From USPTO dates

19481951195419571960196319661969Application filedAug 27, 1947Patent grantedMarch 4, 1952Term endedMarch 4, 1969

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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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