Patent US3832229A successfully refreshed from Google Patents.
US3832229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of using latex polymer formulations for seepage control
Assignee: ChampionX LLC
•
Filing: 1972-10-06
•
Granted: 1974-08-27
•
Expires: 1992-10-06
Abstract
Abstract A METHOD OF SEEPAGE CONTROL WHICH COMPRISES CONTACTING A SURFACE WITH EITHER (1) WATER-IN-OIL EMULSION CONTAINING DISPERSED THROUGHOUT A FINELY-DIVIDED WATER-SOLUBLE VINYL ADDITION POLYMER; OR )2) A STABLE LIQUID DISPERSION OF A WATER-SOLUBLE ANIONIC VINYL ADDITION POLYMER AND A WATER-SOLUBLE CATIONIC POLYMER.
Inventors
- 👤 Brow P Du
- 👤 A Frisque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:24
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/16; E02B5/00; E02B5/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |