US3121091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary imidazolium and imidazolinium bisulfites
Assignee: ChampionX LLC
•
Filing: 1960-03-03
•
Granted: 1964-02-11
•
Expires: 1980-03-03
Abstract
No abstract record available.
Inventors
- 👤 Green Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D215/00; C07D215/02; C07D215/04; C07D215/10; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/04; C07D233/06; C07D233/08; C07D233/10; C07D233/12; C07D233/56; C07D249/00; C07D249/02; C07D249/08; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2493319A
Cited
US2590126A
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US2713581A
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US2738325A
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US2842546A
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US2875210A
Cited
US2870153A
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US2886574A
Cited
US2909525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |