US3489822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grafted terpolymer of ethylene,propylene and a non-conjugated diene
Assignee: Dow Chemical Co
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Filing: 1967-08-28
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Granted: 1970-01-13
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Expires: 1987-08-28
Abstract
No abstract record available.
Inventors
- 👤 Harry S Witt
- 👤 Charles F Paddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:43
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08F; C08F255/00; C08F255/02; C08F255/06; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L25/14; C08L33/00; C08L33/18; C08L33/20; C08L51/00; C08L51/06
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) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |