Patent US3053803A successfully refreshed from Google Patents.
US3053803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polynuclear phenols
Assignee: Shell USA Inc
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Filing: 1960-07-11
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Granted: 1962-09-11
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Gunter S Jaffe
- 👤 Albert L Rocklin
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:14
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C08; C08F; C08F2/00; C08F2/38; C08K; C08K5/00; C08K5/04; C08K5/13; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C09K15/08; C09K15/28; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/182; C10L1/183; C10L1/1835; C10M; C10M129/00; C10M129/02; C10M129/04; C10M129/10; C10M129/14; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/085; C10M2221/00; C10M2221/04; C10M2221/043; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10M2223/06; C10M2223/061; C10N; C10N2050/00; C10N2050/10; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/929; Y10S8/00; Y10S8/09; Y10S8/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
125 words
THE STABILIZED COMPOSITION CONSISTING ESSENTIALLY OF A HYDROCARBON MATERIAL NORMALLY SUBJECT TO OXIDATIVE DETERIORATION AND CONTAINING THE POLYNUCLEAR PHENOL COMPRISING FROM ONE TO TWO MONONUCLEAR ARYL RINGS, EACH RING HAVING FROM ONE TO THREE HYDROXYL GROUPS AND FROM ONE TO THREE 3,5-DIALKYL-4-HYDROXYBENZYL SUBSTITUENTS WHEREIN EACH OF THE ALKYL RADICALS HAS UP TO 8 CARBON ATOMS AND EACH OF SAID ALKYL RADICALS ON EACH BENZYL NUCLEUS IS BRANCHED ON THE ALPHA CARBON ATOM, SAID POLYUCLEAR PHENOL HAVING AT LEAST THREE SIX-MEMBERED NUCLEI IN THE MOLECULE AND HAVING A PHENOLIC HYDROXYL GROUP ON EACH NUCLEUS, AND EACH OF SAID 3,5-DIALKYL-4-HYDROXYBENZYL GROUPS BEING ATTACHED TO ONE OF THE RING CARBON ATOMS ORTHO AND PARA TO THE HYDROXYL GROUP, IN AMOUNT SUFFICIENT TO STABILIZE THE COMPOSITION AGAINST OXIDATIVE DETERIORATION.
Claim 2
Dependent Claim
125 words
THE STABILIZED COMPOSITION CONSISTING ESSENTIALLY OF A HYDROCARBON MATERIAL NORMALLY SUBJECT TO OXIDATIVE DETERIORATION AND CONTAINING THE POLYNUCLEAR PHENOL COMPRISING FROM ONE TO TWO MONONUCLEAR ARYL RINGS, EACH RING HAVING FROM ONE TO THREE HYDROXYL GROUPS AND FROM ONE TO THREE 3,5-DIALKYL-4-HYDROXYBENZYL SUBSTITUENTS WHEREIN EACH OF THE ALKYL RADICALS HAS UP TO 8 CARBON ATOMS AND EACH OF SAID ALKYL RADICALS ON EACH BENZYL NUCLEUS IS BRANCHED ON THE ALPHA CARBON ATOM, SAID POLYUCLEAR PHENOL HAVING AT LEAST THREE SIX-MEMBERED NUCLEI IN THE MOLECULE AND HAVING A PHENOLIC HYDROXYL GROUP ON EACH NUCLEUS, AND EACH OF SAID 3,5-DIALKYL-4-HYDROXYBENZYL GROUPS BEING ATTACHED TO ONE OF THE RING CARBON ATOMS ORTHO AND PARA TO THE HYDROXYL GROUP, IN AMOUNT SUFFICIENT TO STABILIZE THE COMPOSITION AGAINST OXIDATIVE DETERIORATION.
Claim 3
Dependent Claim
95 words
THE POLYNUCLEAR PHENOL COMPRISING FROM ONE TO TWO MONOMUCLEAR ARYL RINGS, EACH RING HAVING FROM ONE TO THREE HYDROXYL GROUPS, AND FROM ONE TO THREE 3,5-DIALKYL-4-HYDROXYLBENZYL GROUPS, WHEREIN EACH ALKYL GROUP HAS UP TO 8 CARBON ATOMS, AND IS BRANCHED ON THE ALPHA CARBON ATOM, SAID POLYNUCLEAR PHENOL HAVING AT LEAST THREE SIX-MEMBERED NUCLEI IN THE MOLECULE AND HAVING A PHENOLIC GROUP ON EACH NUCLEUS, AND EACH 3,5-DIALKYL-4-HYDROXYBENZYL GROUP BEING ATTACHED TO A RING CARBON ATOM ON SAID ARYL NUCLEUS WHICH IS ONE OF THE RING CARBON ATOMS ORTHO AND PARA TO THE HYDROXYL GROUP.
Claim 4
Dependent Claim
95 words
THE POLYNUCLEAR PHENOL COMPRISING FROM ONE TO TWO MONOMUCLEAR ARYL RINGS, EACH RING HAVING FROM ONE TO THREE HYDROXYL GROUPS, AND FROM ONE TO THREE 3,5-DIALKYL-4-HYDROXYLBENZYL GROUPS, WHEREIN EACH ALKYL GROUP HAS UP TO 8 CARBON ATOMS, AND IS BRANCHED ON THE ALPHA CARBON ATOM, SAID POLYNUCLEAR PHENOL HAVING AT LEAST THREE SIX-MEMBERED NUCLEI IN THE MOLECULE AND HAVING A PHENOLIC GROUP ON EACH NUCLEUS, AND EACH 3,5-DIALKYL-4-HYDROXYBENZYL GROUP BEING ATTACHED TO A RING CARBON ATOM ON SAID ARYL NUCLEUS WHICH IS ONE OF THE RING CARBON ATOMS ORTHO AND PARA TO THE HYDROXYL GROUP.
References Cited (Backward Citations)
US1970972A
Cited
US2248831A
Cited
US2905737A
Cited
US2944086A
Cited
US2820775A
Cited
GB806014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |