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US3469948A
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Paddle-type polymerization reactor
Assignee: Dart Industries Inc
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Filing: 1966-08-24
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Granted: 1969-09-30
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Expires: 1986-08-24
Abstract
No abstract record available.
Inventors
- 👤 John E Anderson
- 👤 Francis H Holloway
- 👤 William A Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:14
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/10; C; C08; C08F; C08F297/00; C08F297/06; C08F297/08; C08F297/083; B01J2219/00; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2627668A
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US2630302A
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US2677000A
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US3254070A
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US3071352A
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US3377139A
Cited
US3386809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |