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US3285777A Expired / Lapsed US ⏱️ 0.0 years remaining

Oxygenizing systems useful for cleaning purposes

Assignee: Goodrich Gulf Chemicals Inc
•
Filing: 1963-12-23
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Granted: 1966-11-15
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Expires: 1983-12-23
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Abstract

No abstract record available.

Inventors

  • 👤 Kahn Henry
  • 👤 Popa Lazar

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 20:48
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/008; C08F36/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 143 words
A PROCESS FOR REMOVING CONTAMINANTS CONSISTING OF FILMS AND DEPOSITS FORMED IN CHEMICAL PROCESSING EQUIPMENT DURING POLYMERIZATION REACTIONS EMPLOYED IN THE MANUFACTURE OF ORGANIC POLYMERS, COMPRISING CONTACTING THE SURFACE OF THE EQUIPMENT TO BE CLEANED WITH A MIXTURE COMPRISING (1) AN ORGANIC HYDROPEROXIDE OF THE FORMULA RCOOH WHEREIN R IS AN ALKYL, ARYL OR ARYLALKYL RADICAL; (2) A METALLIC DECOMPOSITION CATALYST SELECTED FROM THE GROUP CONSISTING OF SALTS AND COMPLEXES OF IRON, VANDADIUM OR CHROMIUM; AND (3) A SUBSTANTIALLY INERT ORGANIC SOLVENT HAVING SUBSTANTIALLY SOLUBILITY FOR SAID ORGANIC HYDROPEROXIDE AND SAID METALLIC DECOMPOSITION CATALYST, SAID ORGANIC HYDROPEROXIDE CONSISTUTING AT LEAST ABOUT 3% BY WEIGHT OF THE MIXTURE OF SAID ORGANIC SOLVENT, METALLIC DECOMPOSITION CATALYST, AND ORGANIC HYDROPEROXIDE, AND SAID METALLIC DECOMPOSITION CATALYST CONSTITUTING AT LEAST ABOUT 0.025% BY WEIGHT OF SAID MIXTURE, AND HEATING THE MIXTURE UNTIL SAID CONTAMINANTS HAVE BEEN SUBSTANTIALLY DISSOLVED.
Claim 2
Dependent Claim 143 words
A PROCESS FOR REMOVING CONTAMINANTS CONSISTING OF FILMS AND DEPOSITS FORMED IN CHEMICAL PROCESSING EQUIPMENT DURING POLYMERIZATION REACTIONS EMPLOYED IN THE MANUFACTURE OF ORGANIC POLYMERS, COMPRISING CONTACTING THE SURFACE OF THE EQUIPMENT TO BE CLEANED WITH A MIXTURE COMPRISING (1) AN ORGANIC HYDROPEROXIDE OF THE FORMULA RCOOH WHEREIN R IS AN ALKYL, ARYL OR ARYLALKYL RADICAL; (2) A METALLIC DECOMPOSITION CATALYST SELECTED FROM THE GROUP CONSISTING OF SALTS AND COMPLEXES OF IRON, VANDADIUM OR CHROMIUM; AND (3) A SUBSTANTIALLY INERT ORGANIC SOLVENT HAVING SUBSTANTIALLY SOLUBILITY FOR SAID ORGANIC HYDROPEROXIDE AND SAID METALLIC DECOMPOSITION CATALYST, SAID ORGANIC HYDROPEROXIDE CONSISTUTING AT LEAST ABOUT 3% BY WEIGHT OF THE MIXTURE OF SAID ORGANIC SOLVENT, METALLIC DECOMPOSITION CATALYST, AND ORGANIC HYDROPEROXIDE, AND SAID METALLIC DECOMPOSITION CATALYST CONSTITUTING AT LEAST ABOUT 0.025% BY WEIGHT OF SAID MIXTURE, AND HEATING THE MIXTURE UNTIL SAID CONTAMINANTS HAVE BEEN SUBSTANTIALLY DISSOLVED.

References Cited (Backward Citations)

US2614100A Cited
US2607753A Cited
US2708664A Cited
US2749313A Cited
US2830976A Cited
US2810665A Cited
US2914376A Cited
US2880121A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-11-14 1970-05-16 1970-11-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-11-14 1974-05-16 1974-11-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-11-14 1978-05-16 1978-11-15 $7700.00 Window Closed / Lapsed

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