US3511784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed hydrochloric acid and method
Assignee: ConocoPhillips Co
•
Filing: 1967-01-25
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Granted: 1970-05-12
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Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 Olen L Riggs Jr
- 👤 David W Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:56
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C01; C01B; C01B7/00; C01B7/01; C11; C11D; C11D1/00; C11D1/66; C11D1/72; C11D3/00; C11D3/0005; C11D3/0073; C11D3/16; C11D3/26; C11D3/30; C11D7/00; C11D7/02; C11D7/04; C11D7/08
Claims Analysis
Total Claims: 0
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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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |