US3215200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aqueous foams and compositions therefor
Assignee: ChampionX LLC
•
Filing: 1960-10-31
•
Granted: 1965-11-02
•
Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
- 👤 Virgil L Seale
- 👤 Richard E Berkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:43
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/38; E; E21; E21B; E21B21/00; E21B21/14; E21B43/00; E21B43/12; E21B43/121; E21B43/13; Y; Y10; Y10S; Y10S507/00; Y10S507/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR RAISING WATER FROM A SUBTERRANEAN ZONE TO THE SURFACE WHICH COMPRISES MIXING WITH WATER IN SAID SUBTERRANEAN ZONE A FOAM PRODUCING QUANTITY OF A SULFATED, POLYOXYETHYLATED MONOHYDRIC, HIGHER ALIPHATIC ALCOHOL FOAMING AGENT, FLOWING A GAS THROUGH SAID SUBTERRANEAN ZONE AND THEN TO THE SURFACE TO CAUSE SAID WATER TO FORM AN AQUEOUS FOAM AND RAISE SAID FOAM TO THE SURFACE WITH SAID GAS.
Claim 2
Dependent Claim
66 words
A PROCESS FOR RAISING WATER FROM A SUBTERRANEAN ZONE TO THE SURFACE WHICH COMPRISES MIXING WITH WATER IN SAID SUBTERRANEAN ZONE A FOAM PRODUCING QUANTITY OF A SULFATED, POLYOXYETHYLATED MONOHYDRIC, HIGHER ALIPHATIC ALCOHOL FOAMING AGENT, FLOWING A GAS THROUGH SAID SUBTERRANEAN ZONE AND THEN TO THE SURFACE TO CAUSE SAID WATER TO FORM AN AQUEOUS FOAM AND RAISE SAID FOAM TO THE SURFACE WITH SAID GAS.
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |