US3406155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic vinyl lactam-acrylamide copolymers
Assignee: GAF Corp
•
Filing: 1965-05-18
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Granted: 1968-10-15
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Expires: 1985-05-18
Abstract
No abstract record available.
Inventors
- 👤 Julian L Azorlosa
- 👤 Earl P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/41; D21H17/44; D21H17/45; D21H17/455; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |