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Insulating coating comprising an aqueous mixture of the reaction product of chromium nitrate and sodium chromate,phosphoric acid and colloidal silica and method of making the same

US 3,562,011 A · Inventors: MCMORRIS DANIEL W et al.

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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 February 9, 1971. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by February 9, 1988.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledApril 26, 1968
GrantedFebruary 9, 1971
Term endedFebruary 9, 1988
Application number—
Classification (CPC)H01F27/24 +2 more
Length3 pages

Timeline

Timeline From USPTO dates

1969197119731975197719791981198319851987Application filedApril 26, 1968Patent grantedFeb 9, 1971Term endedFeb 9, 1988

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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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