US3528958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified olefin polymers of improved properties
Assignee: Millennium Petrochemicals Inc
•
Filing: 1967-03-16
•
Granted: 1970-09-15
•
Expires: 1987-03-16
Abstract
No abstract record available.
Inventors
- 👤 George S Achorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:55
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F10/00; C08F8/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE533362A
Cited
US2913448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |