US2837536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of heterocyclic oxygencontaining compounds
Assignee: Phillips Petroleum Co
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Filing: 1955-05-23
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Granted: 1958-06-03
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Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Homer M Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
C; C07; C07C; C07C243/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A METHOD OF STABILIZING THE HETEROCYCLIC OXYGENCONTAINING COMPOUND WHEREIN SAID HETEROCYCLIC OXYGEN IS PRESENCE IN A RING SELECTED FROM THE GROUP CONSISTING OF THE FURAN AND PYRAN RINGS, WHICH COMPRISES INCORPORATING AND MAINTAINING THEREIN DURING STORAGE 0.1 TO 10 WEIGHT PERCENT BASED ON THE COMPOUND BEING STABILIZED OF A COMPOUND HAVING THE STRUCTURAL FORMULA
Claim 2
Independent Claim
54 words
A METHOD OF STABILIZING THE HETEROCYCLIC OXYGENCONTAINING COMPOUND WHEREIN SAID HETEROCYCLIC OXYGEN IS PRESENCE IN A RING SELECTED FROM THE GROUP CONSISTING OF THE FURAN AND PYRAN RINGS, WHICH COMPRISES INCORPORATING AND MAINTAINING THEREIN DURING STORAGE 0.1 TO 10 WEIGHT PERCENT BASED ON THE COMPOUND BEING STABILIZED OF A COMPOUND HAVING THE STRUCTURAL FORMULA
Claim 3
Dependent Claim
32 words
A STABILIZED COMPOSITION OF MATTER COMPRISING A HETEROCYCLIC OXYGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF FURAN AND PYRAN HAVING ADMIXED THEREIN A STABILIZING AMOUNT OF A COMPOUND OF THE STRUCTURAL FORMULA
Claim 4
Dependent Claim
32 words
A STABILIZED COMPOSITION OF MATTER COMPRISING A HETEROCYCLIC OXYGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF FURAN AND PYRAN HAVING ADMIXED THEREIN A STABILIZING AMOUNT OF A COMPOUND OF THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US1793635A
Cited
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Cited
US2216020A
Cited
US2396557A
Cited
US2438975A
Cited
GB688703A
Cited
US2701241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |