US2663689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well treating solution
Assignee: Independent-Eastern Torpedo Co
•
Filing: 1950-12-26
•
Granted: 1953-12-22
•
Expires: 1970-12-26
Abstract
No abstract record available.
Inventors
- 👤 Benson M Kingston
- 👤 John B Childress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:05
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; C09K8/74; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/928; Y10S507/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A WELL TREATING COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID OF 2 1/2% TO 20% STRENGTH CONTAINING 1% TO 10% HYDROFLUORIC ACID AND 0.6% TO 3% BUFFERING MATERIAL SELECTED FROM THE GROUP CONSISTING OF BORIC AND WATER SOLUBLE SALTS OF BORIC ACID.
Claim 2
Dependent Claim
43 words
A WELL TREATING COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF HYDROCHLORIC ACID OF 2 1/2% TO 20% STRENGTH CONTAINING 1% TO 10% HYDROFLUORIC ACID AND 0.6% TO 3% BUFFERING MATERIAL SELECTED FROM THE GROUP CONSISTING OF BORIC AND WATER SOLUBLE SALTS OF BORIC ACID.
References Cited (Backward Citations)
US2300393A
Cited
US2094479A
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US2265759A
Cited
US2314022A
Cited
US2250176A
Cited
US2251393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |