US3450680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylamide terpolymers and their use in paper making process
Assignee: ChampionX LLC
•
Filing: 1966-05-25
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Granted: 1969-06-17
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Expires: 1986-05-25
Abstract
No abstract record available.
Inventors
- 👤 Myron J Jursich
- 👤 Gail T Randich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:05
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/44; D21H17/45; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; D21H17/42; D21H17/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB883973A
Cited
US3256141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |