US3497483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-cyclopropyl-1-phenyl substituted ethylene polymers
Assignee: WR Grace and Co
•
Filing: 1968-03-27
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Granted: 1970-02-24
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Expires: 1988-03-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Ketley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:03
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/02; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/12; C08F12/32; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |