US3178398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and curing of polymers containing terminally reactive nitrogen
Assignee: Phillips Petroleum Co
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Filing: 1960-10-24
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Granted: 1965-04-13
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles W Strobel
- 👤 Robert P Zelinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:20
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A PROCESS WHICH COMPRISES CONTACTING A POLYMER OF A CONUGATED DIENE HAVING FROM 4 TO 12 CARBON ATOMS PER MOLECULE SAID POLYMER CONTAINING AT LEAST ONE TERMINAL LITHIUM ATOM PER MOLECULE, IN SOLUTION PRIOR TO GUENCHING WITH A NITROGEN-CONTAINING COMPOUND HAVING THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |