US3131144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration process
Assignee: ChampionX LLC
•
Filing: 1959-05-21
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Granted: 1964-04-28
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Expires: 1979-05-21
Abstract
No abstract record available.
Inventors
- 👤 Leo E Nagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:38
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS OF FILTERING A LOW TURBIDITY AQUEOUS LIQUID CONTAINING FINELY DIVIDED SUSPENDED SOLIDS WHICH COMPRISES, FIRST UNIFORMLY MIXING A QUANTITY OF A WATER SOLUBLE CATIONIC POLYMER FROM THE GROUP CONSISTING OF POLYETHYLENEIMINES, HYDROPHILIC ALKYLENE POLYAMINE POLYFUNCTIONAL HALOHYDRIN POLYMERS RESULTING FROM THE CONDENSATION POLYMERIZATION OF AN ALKYLENE POLYAMINE AND A HALOHYDRIN IN AN AQUEOUS SOLUTION TO A THICKENED SUB-RESINOUS CONDITION SHORT OF GEL FORMATION AND POLYMERS OF POLYFUNCTIONAL HALODHYDRINS AND AMMONIA WITH A LOW TURBIDITY AQUEOUS LIQUID, THE QUANTITY OF THE POLYMER AND
Claim 2
Dependent Claim
83 words
A PROCESS OF FILTERING A LOW TURBIDITY AQUEOUS LIQUID CONTAINING FINELY DIVIDED SUSPENDED SOLIDS WHICH COMPRISES, FIRST UNIFORMLY MIXING A QUANTITY OF A WATER SOLUBLE CATIONIC POLYMER FROM THE GROUP CONSISTING OF POLYETHYLENEIMINES, HYDROPHILIC ALKYLENE POLYAMINE POLYFUNCTIONAL HALOHYDRIN POLYMERS RESULTING FROM THE CONDENSATION POLYMERIZATION OF AN ALKYLENE POLYAMINE AND A HALOHYDRIN IN AN AQUEOUS SOLUTION TO A THICKENED SUB-RESINOUS CONDITION SHORT OF GEL FORMATION AND POLYMERS OF POLYFUNCTIONAL HALODHYDRINS AND AMMONIA WITH A LOW TURBIDITY AQUEOUS LIQUID, THE QUANTITY OF THE POLYMER AND
References Cited (Backward Citations)
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US2778499A
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |