US2767159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper salts of organic acids as catalysts for the polymerization of polymerizable heterocyclic nitrogen compounds
Assignee: Phillips Petroleum Co
•
Filing: 1952-10-27
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Granted: 1956-10-16
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Expires: 1972-10-27
Abstract
No abstract record available.
Inventors
- 👤 Mack F Potts
- 👤 Paul S Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:12
CPC Classifications
C; C08; C08F; C08F4/00; C08F26/00; C08F26/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR THE PRODUCTION OF POLYMERIC MATERIALS WHICH COMPRISES SUBJECTING AT LEAST ONE VINYLPYRIDINE OF THE FORMULA
Claim 2
Dependent Claim
18 words
A PROCESS FOR THE PRODUCTION OF POLYMERIC MATERIALS WHICH COMPRISES SUBJECTING AT LEAST ONE VINYLPYRIDINE OF THE FORMULA
References Cited (Backward Citations)
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US2388373A
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US2388372A
Cited
US2642410A
Cited
US2535557A
Cited
US2610965A
Cited
US2589258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |