US2726232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
P-xylylene bis (5 cyclopentadiene) and polymer
Assignee: EIDP Inc
•
Filing: 1953-02-06
•
Granted: 1955-12-06
•
Expires: 1973-02-06
Abstract
No abstract record available.
Inventors
- 👤 Robert W Upson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/28; C07C2601/00; C07C2601/06; C07C2601/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
1 words
P-XYLYLENE-BIS-(5-CYCLOPENTADIENE).
Claim 2
Dependent Claim
1 words
P-XYLYLENE-BIS-(5-CYCLOPENTADIENE).
References Cited (Backward Citations)
US2512698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |