US3480602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerisation process
Assignee: British Geon Ltd
•
Filing: 1965-09-01
•
Granted: 1969-11-25
•
Expires: 1985-09-01
Abstract
No abstract record available.
Inventors
- 👤 Malcolm James Abercrombie
- 👤 David B Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:33
CPC Classifications
C; C08; C08F; C08F251/00; C08F251/02; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2979492A
Cited
FR1285616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |