US2884414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method of stabilizing
Assignee: —
•
Filing: —
•
Granted: 1959-04-28
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Expires: 1976-04-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:38
CPC Classifications
C; C07; C07D; C07D223/00; C07D223/02; C07D223/06; C07D223/08; C07D223/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A COMPOSITION CONSISTING ESSENTIALLY OF A PURE LIQUID E-CAPROLACTAM, AND A SMALL QUANTITY OF AT LEAST 0.0001% BY WEIGHT THEREOF OF A NON-VOLATILE ALKALINE COMPOUND, SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HYDROXIDES, ALKALI METAL CARBONATES, ALKALI METAL CYANIDES, ALKALI METAL BORATES, ALKALI METAL PHOSPHATES, ALKALI METAL SALTS OF WEAK ORGANIC ACIDS AND ALKALINE EARTH METAL ACETATES, SAID QUANTITY BEING SUFFICIENT TO STABILIZE SAID PURE E-CAPROLACTAM AGAINST HARMFUL DETERIORATION.
Claim 2
Dependent Claim
74 words
A COMPOSITION CONSISTING ESSENTIALLY OF A PURE LIQUID E-CAPROLACTAM, AND A SMALL QUANTITY OF AT LEAST 0.0001% BY WEIGHT THEREOF OF A NON-VOLATILE ALKALINE COMPOUND, SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL HYDROXIDES, ALKALI METAL CARBONATES, ALKALI METAL CYANIDES, ALKALI METAL BORATES, ALKALI METAL PHOSPHATES, ALKALI METAL SALTS OF WEAK ORGANIC ACIDS AND ALKALINE EARTH METAL ACETATES, SAID QUANTITY BEING SUFFICIENT TO STABILIZE SAID PURE E-CAPROLACTAM AGAINST HARMFUL DETERIORATION.
References Cited (Backward Citations)
US2221369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |