US3801554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithium alkenoxides as modifiers in organolithium initiated polymerization
Assignee: Phillips Petroleum Co
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Filing: 1972-02-28
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Granted: 1974-04-02
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Expires: 1992-02-28
Abstract
Abstract ADDITION OF LITHIUM SALTS OF ALKENOLS TO POLYMERIZATION SYSTEM INITIATED WITH LITHIUM BASED INITIATORS RESULTS IN POLYMERS WITH BROADEN MOLECULAR WEIGHT DISTRIBUTION AND HENCE WITH IMPROVED PROCESSABILITY.
Inventors
- 👤 C Selman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:00
CPC Classifications
C; C08; C08F; C08F2/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 0
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |