US2848440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of vinyl lactams and trimethallyl isocyanurate
Assignee: Dow Chemical Co
•
Filing: 1956-10-18
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Granted: 1958-08-19
•
Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Davis
- 👤 Forrest A Ehlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:32
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A DUE-RECEPTIVE, WATER-INSOLUBLE, NORMALLY SOLID COPOLYMER CONSISTING ESSENTIALLY OF A VINYL LACTAM AND TRIMETHALLYL ISOCYANURATE THAT CONTAINS A MAJOR PROPORTION OF THE VINYL LACTAM MONOMER POLYMERIZED IN THE COPOLYMER MOLECULE.
Claim 2
Dependent Claim
30 words
A DUE-RECEPTIVE, WATER-INSOLUBLE, NORMALLY SOLID COPOLYMER CONSISTING ESSENTIALLY OF A VINYL LACTAM AND TRIMETHALLYL ISOCYANURATE THAT CONTAINS A MAJOR PROPORTION OF THE VINYL LACTAM MONOMER POLYMERIZED IN THE COPOLYMER MOLECULE.
References Cited (Backward Citations)
US2496097A
Cited
US2643990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |