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Quaternary ammonium containing compounds containing fluoroalkyl monocyclic aromatic hydrocarbon groups

US 2,692,264 A · Inventors: WOJCIK BRUNO H

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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 October 19, 1954. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 19, 1971.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMay 2, 1950
GrantedOctober 19, 1954
Term endedOctober 19, 1971
Application number—
Classification (CPC)—
Length5 pages

Timeline

Timeline From USPTO dates

1951195419571960196319661969Application filedMay 2, 1950Patent grantedOct 19, 1954Term endedOct 19, 1971

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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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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