US3272861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkylene polyamine derivatives of hydroxybenzoic acid
Assignee: ConocoPhillips Co
•
Filing: 1962-08-23
•
Granted: 1966-09-13
•
Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Olen L Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A HYDROXYBENZAMIDE OF THE FORMULA
Claim 2
Dependent Claim
5 words
A HYDROXYBENZAMIDE OF THE FORMULA
References Cited (Backward Citations)
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US2935474A
Cited
GB874206A
Cited
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Cited
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Cited
US3019196A
Cited
US3036128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |