Patent US3200154A successfully refreshed from Google Patents.
US3200154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono-secondary-hydroxy hydrocarbon n-substituted trialkylene tetramines
Assignee: ChampionX LLC
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Filing: 1962-03-26
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Granted: 1965-08-10
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
- 👤 Virgil L Seale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:43
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C23F11/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
US2817675A
Cited
US2944030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |