US3513145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous mass polymerization processes
Assignee: Crawford and Russell Inc
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Filing: 1966-02-25
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Granted: 1970-05-19
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Expires: 1986-02-25
Abstract
No abstract record available.
Inventors
- 👤 James R Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:18
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08F291/00; C08F291/02
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) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |