US2641594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylidene bis (hydrocarbon sulfones) and their polymers
Assignee: EIDP Inc
•
Filing: 1951-05-16
•
Granted: 1953-06-09
•
Expires: 1971-05-16
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:45
CPC Classifications
C; C07; C07C; C07C317/00; C07C317/02; C07C317/08; C08; C08F; C08F28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A VINYLIDENE BIS(HYDROCARBON SULFONE) IN WHICH THE HYDROCARBON RADICAL IN EACH HYDROCARBON SULFONE GROUP IS FREE FROM ALPHATIC UNSATURATION.
Claim 2
Dependent Claim
19 words
A VINYLIDENE BIS(HYDROCARBON SULFONE) IN WHICH THE HYDROCARBON RADICAL IN EACH HYDROCARBON SULFONE GROUP IS FREE FROM ALPHATIC UNSATURATION.
References Cited (Backward Citations)
US2535533A
Cited
US2493364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |