US3247900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for well treatment
Assignee: Sinclair Research Inc
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Filing: 1960-01-06
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Granted: 1966-04-26
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Expires: 1980-01-06
Abstract
No abstract record available.
Inventors
- 👤 Robert O Perry
- 👤 John L Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/506; C09K8/508; C09K8/5083; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; Y; Y10; Y10S; Y10S507/00; Y10S507/902; Y10S507/935
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
THE METHOD FOR DECREASING THE PERMEABILITY OF A PERMEABLE WELL AREA IN A WELL THE STEPS COMPRISING INTRODUCING AN AQUEOUS SOLUTION OF A RESIN-FORMING MATERIAL, CONSISTING ESSENTIALLY OF (A) ABOUT 1 TO 25 WEIGHT PERCENT OF A MONOMERIC ALKYIDENE BISCARYLAMIDE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |