US2803432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming underground cavity
Assignee: Texaco Development Corp
•
Filing: 1952-08-23
•
Granted: 1957-08-20
•
Expires: 1972-08-23
Abstract
No abstract record available.
Inventors
- 👤 Charles F Teichmann
- 👤 Allen D Garrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/131; B; B65; B65G; B65G5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD FOR EXTRACTING CLAY FROM AN UNDERGROUND CLAY BODY AND FORMING AN UNDERGROUND STORAGE CAVITY THEREIN, SAID METHOD COMPRISING FLOWING INTO CONTACT WITH SAID CLAY BODY A WATER SOLUTION OF A DEFLOCCULANT CHEMICAL, THEREBY DEFIOCCULATING CLAY WITH SAID SOLUTION AND FORMING CLAY-LADEN LIQUID; REMOVING SAID CLAY-LADEN LIQUID FROM SAID CLAY BODY, THEREBY FORMING A CAVITY HAVING A WALL; DESPOSITING SODIUM SILICATE SOLUTION ON SAID WALL; AND INTRODUCING CARBON DIOXIDE GAS INTO SAID CAVITY TO REACT WITH SAID SODIUM SILICATE AND DEPOSIT A PRECIPITATE ON SAID WALL TO REDUCE PERMEABILITY THEREOF.
Claim 2
Independent Claim
91 words
A METHOD FOR EXTRACTING CLAY FROM AN UNDERGROUND CLAY BODY AND FORMING AN UNDERGROUND STORAGE CAVITY THEREIN, SAID METHOD COMPRISING FLOWING INTO CONTACT WITH SAID CLAY BODY A WATER SOLUTION OF A DEFLOCCULANT CHEMICAL, THEREBY DEFIOCCULATING CLAY WITH SAID SOLUTION AND FORMING CLAY-LADEN LIQUID; REMOVING SAID CLAY-LADEN LIQUID FROM SAID CLAY BODY, THEREBY FORMING A CAVITY HAVING A WALL; DESPOSITING SODIUM SILICATE SOLUTION ON SAID WALL; AND INTRODUCING CARBON DIOXIDE GAS INTO SAID CAVITY TO REACT WITH SAID SODIUM SILICATE AND DEPOSIT A PRECIPITATE ON SAID WALL TO REDUCE PERMEABILITY THEREOF.
References Cited (Backward Citations)
DE208335C
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US342274A
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US1960932A
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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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |