US2740771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl ester copolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-12-20
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Granted: 1956-04-03
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Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Raymond I Longley
- 👤 Earl C Chapin
- 👤 Richard F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COPOLYMER OF A VINYL ESTER OF AN ALIPHATIC UNSUBSTITUTED ACID CONTAINING FROM 1 TO 20 CARBON ATOMS AND 2-BUTENE-1,4-DIOL, SAID COPOLYMER CONTAINING FROM 1 TO 15% HYDROXYL GROUPS BY WEIGHT.
Claim 2
Dependent Claim
31 words
A COPOLYMER OF A VINYL ESTER OF AN ALIPHATIC UNSUBSTITUTED ACID CONTAINING FROM 1 TO 20 CARBON ATOMS AND 2-BUTENE-1,4-DIOL, SAID COPOLYMER CONTAINING FROM 1 TO 15% HYDROXYL GROUPS BY WEIGHT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |