US3555828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preventing water loss from reservoirs and channels
Assignee: Witco Corp
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Filing: 1968-06-18
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Granted: 1971-01-19
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Expires: 1988-06-18
Abstract
Abstract INHIBITING WATER LOSS DUE TO SEEPAGE INTO EARTH OR SOIL SUBSTRATA SURFACES OF WATER CATCHMENT RESERVOIRS OR CHANNELS BY APPLYING A LIQUID ELASTOMERIC COATING COMPOSITION OVER SAID SOIL STRATA SURFACES, AND THEN CURING SAID COATING COMPOSITION FO FORM A CONTINUOUS, THIN COHESIVE MEMBRANE WHICH INHIBITS WATER LOSS FROM THE BODY OF WATER DUE TO SEEPAGE INTO THE SOIL SUBSTRATA SURFACES.
Inventors
- 👤 Herbert Goldstein
- 👤 Henry T Ingram
- 👤 Robert J Kufrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:02
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/76; E; E02; E02B; E02B3/00; E02B3/16; Y; Y02; Y02A; Y02A20/00
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |