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Method of producing activated carbonaceous substances and the product of the method

US 1,629,237 A · Inventors: ROUSE SUTCLIFFE EDGAR

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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 May 17, 1927. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by May 17, 1944.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJanuary 27, 1920
GrantedMay 17, 1927
Term endedMay 17, 1944
Application number—
Classification (CPC)C01B32/336
Length4 pages

Timeline

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19211924192719301933193619391942Application filedJan 27, 1920Patent grantedMay 17, 1927Term endedMay 17, 1944

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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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