US2862911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl vinyl ketone-styrene copolymer hydroxylated by reducing carbonyl group
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-09-19
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Granted: 1958-12-02
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Expires: 1976-09-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Blanchette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:27
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A REDUCED COPOLYMER OF AN ALKYL VINYL KETONE WHEREIN THE ALKYL RADICAL CONTAINS 1-5 CARBON ATOMS AND A MONOVINYLIDENE AROMATIC COMPOUND OF THE GROUP CONSISTING OF STYRENE, ALPHA-METHYL STYRENE, AND AR-SUBSTITUTED DERIVATIVES THEREOF WHEREIN THE AR-SUBSTITUENT IS A MEMBER OF THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON RADICALS CONTAINING 1-4 CARBON ATOMS, HALO, HYDROXYL, AND CARBOXYL SUBSTITUENTS, SAID COPOLYMER BEING REDUCED AT THE CARBONYL GROUPS TO FORM HYDROXYL GROUPS.
Claim 2
Dependent Claim
68 words
A REDUCED COPOLYMER OF AN ALKYL VINYL KETONE WHEREIN THE ALKYL RADICAL CONTAINS 1-5 CARBON ATOMS AND A MONOVINYLIDENE AROMATIC COMPOUND OF THE GROUP CONSISTING OF STYRENE, ALPHA-METHYL STYRENE, AND AR-SUBSTITUTED DERIVATIVES THEREOF WHEREIN THE AR-SUBSTITUENT IS A MEMBER OF THE GROUP CONSISTING OF ALIPHATIC HYDROCARBON RADICALS CONTAINING 1-4 CARBON ATOMS, HALO, HYDROXYL, AND CARBOXYL SUBSTITUENTS, SAID COPOLYMER BEING REDUCED AT THE CARBONYL GROUPS TO FORM HYDROXYL GROUPS.
References Cited (Backward Citations)
US1937063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |