Patent US3164206A successfully refreshed from Google Patents.
US3164206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and product for producing flow in dead wells
Assignee: Individual
•
Filing: 1961-08-21
•
Granted: 1965-01-05
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas I Sharp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:14
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/13; Y; Y10; Y10S; Y10S507/00; Y10S507/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
AN ARTICLE OF MANUFACTURE CONSISTING OF A FOAM STICK FOR TREATING WELLS TO INDUCE FLOW OF FLUID THEREFROM, SAID STICK COMPRISING AN ELONGATED BODY OF FOAMING AGENT HAVING A CAVITY THERIN, AN EFFERVESCENT AGENT IN SAID CAVITY ADAPTED TO EFFERVESCE WHEN CONTACTED WITH SUCH WELL FLUID, AND A PLUG RETAINING SAID EFFERVESCENT AGENT IN SAID CAVITY.
Claim 2
Dependent Claim
56 words
AN ARTICLE OF MANUFACTURE CONSISTING OF A FOAM STICK FOR TREATING WELLS TO INDUCE FLOW OF FLUID THEREFROM, SAID STICK COMPRISING AN ELONGATED BODY OF FOAMING AGENT HAVING A CAVITY THERIN, AN EFFERVESCENT AGENT IN SAID CAVITY ADAPTED TO EFFERVESCE WHEN CONTACTED WITH SUCH WELL FLUID, AND A PLUG RETAINING SAID EFFERVESCENT AGENT IN SAID CAVITY.
References Cited (Backward Citations)
US2168116A
Cited
US2748867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |