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US3226320A
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US
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Method for abating stream pollution
Assignee: Syensqo USA LLC
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Filing: 1963-04-22
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Granted: 1965-12-28
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Walter C Meuly
- 👤 Seldner Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:28
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF ABATING THE POLLUTION OF A FLUID STREAM WHEREIN THE POLLUTANT IS AT LEAST ONE MEMBER OF THE GROUP OF HYDROGEN SULFIDE AND MERCAPTANS, COMPRISING ADDING TO SAID POLLUTED STREAM A CHELATE OF A POLYVALENT METAL WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ACETYL ACETONE, CYCLOPENTADIENE, ETHYLENE DIAMINE TETRACETIC ACID, N-HYDROXYETHYL ETHYLENE DIAMINE, TRIACETIC ACID, GLUCONIC ACID, TARTARIC ACID, AND CITRIC ACID, THE PROPORTION BY WEIGHT OF SAID CHELATE OF THE POLYVALENT METAL TO SAID POLLUTANT BEING IN THE RATIO BETWEEN 1:20 AND 1:50, AND SIMULTANEOUSLY CONTACTING SAID POLLUTED STREAM WITH OXYGEN IN AMOUNT IN EXCESS OF SAID POLLUTANT.
Claim 2
Independent Claim
103 words
A METHOD OF ABATING THE POLLUTION OF A FLUID STREAM WHEREIN THE POLLUTANT IS AT LEAST ONE MEMBER OF THE GROUP OF HYDROGEN SULFIDE AND MERCAPTANS, COMPRISING ADDING TO SAID POLLUTED STREAM A CHELATE OF A POLYVALENT METAL WITH A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ACETYL ACETONE, CYCLOPENTADIENE, ETHYLENE DIAMINE TETRACETIC ACID, N-HYDROXYETHYL ETHYLENE DIAMINE, TRIACETIC ACID, GLUCONIC ACID, TARTARIC ACID, AND CITRIC ACID, THE PROPORTION BY WEIGHT OF SAID CHELATE OF THE POLYVALENT METAL TO SAID POLLUTANT BEING IN THE RATIO BETWEEN 1:20 AND 1:50, AND SIMULTANEOUSLY CONTACTING SAID POLLUTED STREAM WITH OXYGEN IN AMOUNT IN EXCESS OF SAID POLLUTANT.
References Cited (Backward Citations)
BE550073A
Cited
US2641571A
Cited
US3080315A
Cited
US3068065A
Cited
US3097925A
Cited
US3071433A
Cited
GB901554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |