Patent US3776964A successfully refreshed from Google Patents.
US3776964A
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US
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Organolithium polymerization initiators
Assignee: First National City Bank
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Filing: 1971-03-18
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Granted: 1973-12-04
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Expires: 1991-03-18
Abstract
Abstract POLYMERIZATION INITIATORS COMPRISING ALKYLITHIUM ADDUCT-METALATES OF CONJUGATED DIENES AND VINYL-SUBSTITUTED AROMATIC COMPOUNDS. SUCH INITIATOR COMPOSITIONS ARE HIGHLY EFFECTIVE FOR THE PRODUCTION OF POLYMERS OF CONJUGATED DIENES AND/OR VINYL-SUBSTITUTED AROMATIC COMPOUNDS.
Inventors
- 👤 R Morrison
- 👤 C Kamienski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:12
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |