Patent US2980609A successfully refreshed from Google Patents.
US2980609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarification of industrial waters
Assignee: Wyeth Holdings LLC
•
Filing: 1953-06-22
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Granted: 1961-04-18
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Expires: 1973-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ronald R House
- 👤 Sewell T Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:43
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD OF COAGULATING SUSPENDED SOLID ORGANIC IMPURITIES IN WATER WHICH COMPRISES ADDING TO SAID WATER AN AQUEOUS DISPERSION OF A HYDROPHILIC AMINOALIPHATIC LINEAR HAVING A MOLECULAR WEIGFHT OF AT LEAST 2,000 AND CARBON-TO-CARBON CHAIN POLYMER RESIN HAVING A MOLECULAR WEIGHT OF AT LEAST 2,000 AND HAVING FREE AMINE GROUPS ATTACHED DIRECTLY TO THE POLYMER CHAIN THEREOF, THE QUANTITY OF ADDED RESIN BEING WITHIN THE RANGE OF 0.25% TO 3% BASED ON THE DRY WEIGHT OF SAID ORGANIC IMPURITIES, MAINTAINING THE WATER IN A NON-ACID CONDITION UNTIL COAGULATION OF SAID IMPURITIES HAS OCCURED AND SEPARATING THE COAGULATED IMPURITIES FROM THE WATER.
Claim 2
Independent Claim
101 words
A METHOD OF COAGULATING SUSPENDED SOLID ORGANIC IMPURITIES IN WATER WHICH COMPRISES ADDING TO SAID WATER AN AQUEOUS DISPERSION OF A HYDROPHILIC AMINOALIPHATIC LINEAR HAVING A MOLECULAR WEIGFHT OF AT LEAST 2,000 AND CARBON-TO-CARBON CHAIN POLYMER RESIN HAVING A MOLECULAR WEIGHT OF AT LEAST 2,000 AND HAVING FREE AMINE GROUPS ATTACHED DIRECTLY TO THE POLYMER CHAIN THEREOF, THE QUANTITY OF ADDED RESIN BEING WITHIN THE RANGE OF 0.25% TO 3% BASED ON THE DRY WEIGHT OF SAID ORGANIC IMPURITIES, MAINTAINING THE WATER IN A NON-ACID CONDITION UNTIL COAGULATION OF SAID IMPURITIES HAS OCCURED AND SEPARATING THE COAGULATED IMPURITIES FROM THE WATER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |