US2689009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidizing wells
Assignee: Stanolind Oil and Gas Co
•
Filing: 1951-04-14
•
Granted: 1954-09-14
•
Expires: 1971-04-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold W Brainerd
- 👤 Clarence R Fast
- 👤 George C Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72; Y; Y10; Y10S; Y10S507/00; Y10S507/922; Y10S507/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A COMPOSITION OF MATTER COMPRISING AN EMULSION OF A STRONG MINERAL ACID AND AN OILY VEHICLE CONTAINING BATU GUM.
Claim 2
Dependent Claim
19 words
A COMPOSITION OF MATTER COMPRISING AN EMULSION OF A STRONG MINERAL ACID AND AN OILY VEHICLE CONTAINING BATU GUM.
References Cited (Backward Citations)
US1922154A
Cited
US2038720A
Cited
US2050933A
Cited
US2124530A
Cited
US2354570A
Cited
US2547778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |