Patent US1424356A successfully refreshed from Google Patents.
US2844446A
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Stabilization of hydrocarbon distillates
Assignee: Universal Oil Products Co
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Filing: 1956-02-02
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Granted: 1958-07-22
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Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 Henry A Cyba
- 👤 Ralph B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:40
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
FUEL OIL NORMALLY SUSCEPTIBLE TO SEDIMENT FORMATION IN STORAGE CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A BIS-TETRAHYDROPYRIMIDINE JOINED AT THE 2-POSITION THROUGH A DIVALENT HYDROCARBON RADICAL AND THE AMIDES, SALTS AND ACID SALTS OF SAID BIS-TETRAHYDROPYRIMIDINE, SAID COMPOUND HAVING THE PROPERTY OF AND BEING PRESENT IN SUFFICIENT AMOUNT TO RETARD SAID SEDIMENT FORMATION.
Claim 2
Dependent Claim
56 words
FUEL OIL NORMALLY SUSCEPTIBLE TO SEDIMENT FORMATION IN STORAGE CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF A BIS-TETRAHYDROPYRIMIDINE JOINED AT THE 2-POSITION THROUGH A DIVALENT HYDROCARBON RADICAL AND THE AMIDES, SALTS AND ACID SALTS OF SAID BIS-TETRAHYDROPYRIMIDINE, SAID COMPOUND HAVING THE PROPERTY OF AND BEING PRESENT IN SUFFICIENT AMOUNT TO RETARD SAID SEDIMENT FORMATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |