US3296231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid phase process for the production of ethylene/nu-vinyllactam copolymers
Assignee: Bayer AG
•
Filing: 1964-05-06
•
Granted: 1967-01-03
•
Expires: 1984-05-06
Abstract
No abstract record available.
Inventors
- 👤 Resz Raoul
- 👤 Bartl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/06; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A LIQUID PHASE PROCESS WHICH COMPRISES POLYMERIZING ETHYLENE AND N-VINYLLACTAM IN PROPORATIONS OF 10:90 TO 95:5 AT PRESSURES OF 20 TO 2500 ATOSPHERES AND AT TEMPERATURES OF 30 TO 250*C. IN AN ORGANIC SOLVENT REACTION MEDIUM IN WHICH ETHYLENE IS SOLUBLE IN AN AMOUNT OF AT LEAST 5% BY WEIGHT.
Claim 2
Dependent Claim
50 words
A LIQUID PHASE PROCESS WHICH COMPRISES POLYMERIZING ETHYLENE AND N-VINYLLACTAM IN PROPORATIONS OF 10:90 TO 95:5 AT PRESSURES OF 20 TO 2500 ATOSPHERES AND AT TEMPERATURES OF 30 TO 250*C. IN AN ORGANIC SOLVENT REACTION MEDIUM IN WHICH ETHYLENE IS SOLUBLE IN AN AMOUNT OF AT LEAST 5% BY WEIGHT.
References Cited (Backward Citations)
US2646425A
Cited
US2335454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |