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Patent US2862927A successfully refreshed from Google Patents.
US2862927A
Expired / Lapsed
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Heterocyclic nitrogen compound polymer inhibitors
Assignee: Phillips Petroleum Co
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Filing: 1955-06-16
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Granted: 1958-12-02
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Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Harold R Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:25
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF STABILIZING A VINYLPYRIDIEN, SELECTED FROM THE GROUP CONSISTING OF VINYL AND ALPHA-METHYLVINYLPYRIDINES AND ALKYL SUBSTITUENTS THEREOF WHEREIN THE TOTAL CARBON ATOMS IN SUCH ALKYL SUBSTITUENTS DO NOT EXCEED 12, AGAINST POLYMER FORMATION WHICH COMPRISES INCORPORATING THEREWITH A STABILIZING AMOUNT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,4DINITRO-1-NAPHTHOL, 2,4-DINITRO-1-NAPHTHOL-7-SULFONIC ACID, 2,4-DINITRO-1-NAOHTHOL-8-SULFURIC ACID, 2,4-DINITRO-1NAPHTHOL-5-SULFONIC ACID, 2,4-DINITRO-5-METHYL-NAPHTHOL, 2,4-DINITRO-6-PROPYL-1-NAPHTHOL, 2,4-DINITRO-5-METHOXY-1NAPHTHOL AND SODIUM SALT OF 2,4-DINITRO-1-NAPHTHOL-7SULFONIC ACID.
Claim 2
Independent Claim
69 words
A METHOD OF STABILIZING A VINYLPYRIDIEN, SELECTED FROM THE GROUP CONSISTING OF VINYL AND ALPHA-METHYLVINYLPYRIDINES AND ALKYL SUBSTITUENTS THEREOF WHEREIN THE TOTAL CARBON ATOMS IN SUCH ALKYL SUBSTITUENTS DO NOT EXCEED 12, AGAINST POLYMER FORMATION WHICH COMPRISES INCORPORATING THEREWITH A STABILIZING AMOUNT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,4DINITRO-1-NAPHTHOL, 2,4-DINITRO-1-NAPHTHOL-7-SULFONIC ACID, 2,4-DINITRO-1-NAOHTHOL-8-SULFURIC ACID, 2,4-DINITRO-1NAPHTHOL-5-SULFONIC ACID, 2,4-DINITRO-5-METHYL-NAPHTHOL, 2,4-DINITRO-6-PROPYL-1-NAPHTHOL, 2,4-DINITRO-5-METHOXY-1NAPHTHOL AND SODIUM SALT OF 2,4-DINITRO-1-NAPHTHOL-7SULFONIC ACID.
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |