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US2829176A
Expired / Lapsed
US
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Stabilization of phenylphenols
Assignee: Imperial Chemical Industries Ltd
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Filing: 1956-05-28
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Granted: 1958-04-01
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Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Clough Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:45
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/68; C07C37/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR STABILISING PHENYLATED MONOHYDROXY BENZENE IN THE PRESENCE OF UP TO 3% TO ALPHA NAPHTHOL WHICH COMPRISES TREATING IT WITH UP TO 5% OF ITS WEIGHT OF AT LEAST ONE ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, TARTARIC ACID AND PHOSPHORIC ACID.
Claim 2
Dependent Claim
46 words
A PROCESS FOR STABILISING PHENYLATED MONOHYDROXY BENZENE IN THE PRESENCE OF UP TO 3% TO ALPHA NAPHTHOL WHICH COMPRISES TREATING IT WITH UP TO 5% OF ITS WEIGHT OF AT LEAST ONE ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID, TARTARIC ACID AND PHOSPHORIC ACID.
References Cited (Backward Citations)
US2672485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |