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Construction for the improved distribution of air, lean gas and waste gas between hig and low level ports in high chambered horizontal coke ovens

US 3,385,767 A · Inventors: ACKEREN JOSEPH VAN

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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 May 28, 1968. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by May 28, 1985.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledDecember 5, 1966
GrantedMay 28, 1968
Term endedMay 28, 1985
Application number—
Classification (CPC)C10B21/22
Length9 pages

Timeline

Timeline From USPTO dates

1967196919711973197519771979198119831985Application filedDec 5, 1966Patent grantedMay 28, 1968Term endedMay 28, 1985

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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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