Patent US2633425A successfully refreshed from Google Patents.
US2633425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of organic compounds
Assignee: Universal Oil Products Co
•
Filing: 1950-09-16
•
Granted: 1953-03-31
•
Expires: 1970-09-16
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:32
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0042; C11B5/005; C08; C08F; C08F2/00; C08F2/38; C09; C09K; C09K15/00; C09K15/04; C09K15/20; C09K15/24; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/40; C10M2207/402; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/066; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN ORGANIC MATERIAL NORMALLY SUBJECT TO OXIDATIVE DETERIORATION CONTAINING, AS AN INHIBITOR FOR SAID DETERIORATION, A SMALL AMOUNT OF AN INHIBITING COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 1-HYDROXY-4-AMINO-5,8-DIHYDRONAPHNAPHTHALENE, A 1,4-DIAMINO-5,8-DIHYDRONAPHTHALENE, A 1-HYDROXY-4-AMINO-5,6,7,8-TETRAHYDRONAPHTHALENE, AND A 1,4 - DIAMINO - 5,6,7,8 TETRAHYDRONAPHTHALENE.
Claim 2
Dependent Claim
42 words
AN ORGANIC MATERIAL NORMALLY SUBJECT TO OXIDATIVE DETERIORATION CONTAINING, AS AN INHIBITOR FOR SAID DETERIORATION, A SMALL AMOUNT OF AN INHIBITING COMPOUND SELECTED FROM THE GROUP CONSISTING OF A 1-HYDROXY-4-AMINO-5,8-DIHYDRONAPHNAPHTHALENE, A 1,4-DIAMINO-5,8-DIHYDRONAPHTHALENE, A 1-HYDROXY-4-AMINO-5,6,7,8-TETRAHYDRONAPHTHALENE, AND A 1,4 - DIAMINO - 5,6,7,8 TETRAHYDRONAPHTHALENE.
References Cited (Backward Citations)
US2094367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |