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US3468972A
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Control of branching and coupling in lithium-terminated polymers
Assignee: Phillips Petroleum Co
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Filing: 1964-06-22
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Granted: 1969-09-23
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Henry L Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:15
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6204; C08G18/67; C08G18/69; C08G81/00; C08G81/02; C08G81/021; C08G81/022; C08G81/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3135716A
Cited
US3078254A
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US3208980A
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US3214421A
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US3251812A
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US3218306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |