Patent US3241216A successfully refreshed from Google Patents.
Patent US3544522A successfully refreshed from Google Patents.
US3544522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous manufacture of polymers
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1965-08-03
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Granted: 1970-12-01
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Expires: 1985-08-03
Abstract
No abstract record available.
Inventors
- 👤 Wolf-Diether Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:11
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/20; B01F; B01F29/00; B01F29/25; B01F29/60; B01F29/63; B01J19/28; C; C08; C08G; C08G63/00; C08G63/78; C08G63/785; C08G69/00; C08G69/02; C08G69/04; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3057702A
Cited
US2948593A
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US2998307A
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US3118739A
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US3192184A
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US3220804A
Cited
GB1017463A
Cited
US3248180A
Cited
US3376353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |