US3536787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for devolatilizing polymers
Assignee: Shell USA Inc
•
Filing: 1967-03-20
•
Granted: 1970-10-27
•
Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 Brian F Street
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:39
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/26; C08F6/28; C08F6/06; C08F6/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2270182A
Cited
US2238446A
Cited
US2713043A
Cited
US2849430A
Cited
US2905659A
Cited
US3439065A
Cited
US3311676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |