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US2721189A
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Polymeric bicyclo-(2, 2, 1)-2-heptene
Assignee: EIDP Inc
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Filing: 1954-08-30
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Granted: 1955-10-18
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Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Anderson Arthur William
- 👤 Merckling Nicholas George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:26
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08F; C08F32/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2405558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |