Patent US2847401A successfully refreshed from Google Patents.
US2847401A
Expired / Lapsed
US
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Interpolymers of vinylene carbonate with halo-substituted ethylenes
Assignee: Monsanto Chemicals Ltd
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Filing: 1955-12-05
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Granted: 1958-08-12
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Expires: 1975-12-05
Abstract
No abstract record available.
Inventors
- 👤 Earl W Gluesenkamp
- 👤 John D Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
C; C08; C08F; C08F234/00; C08F234/02; C08F214/00; C08F214/02; C08F214/04; C08F214/06; C08F214/18; C08F214/20; C08F214/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
AN INTERPOLYMER OF VINYLENE CARBONATE WITH A HALOSUBSTITUTED ETHYLENE.
Claim 2
Dependent Claim
9 words
AN INTERPOLYMER OF VINYLENE CARBONATE WITH A HALOSUBSTITUTED ETHYLENE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |