US2824105A
Expired / Lapsed
US
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Stabilization of polymerizable heterocyclic nitrogen compounds
Assignee: Phillips Petroleum Co
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Filing: 1952-11-17
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Granted: 1958-02-18
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Expires: 1972-11-17
Abstract
No abstract record available.
Inventors
- 👤 Warren L Smith
- 👤 Mack F Potts
- 👤 Paul S Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:02
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A POLYMERIZABLE HETEROCYCLIC NITROGEN COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
8 words
A POLYMERIZABLE HETEROCYCLIC NITROGEN COMPOUND HAVING THE FORMULA
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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |