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Methods of removing sulfur from the exhaust gases of fired fuels containing sulfur and of simultaneously exploiting the sulfur for the preparation of sulfuric acid

US 3,786,136 A · Inventors: AXEBORG T

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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 January 15, 1974. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 15, 1991.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 15, 1971
GrantedJanuary 15, 1974
Term endedJanuary 15, 1991
Application number—
Classification (CPC)C01B17/74 +1 more
Length2 pages

Timeline

Timeline From USPTO dates

1972197419761978198019821984198619881990Application filedJuly 15, 1971Patent grantedJan 15, 1974Term endedJan 15, 1991

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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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