US2852454A
Expired / Lapsed
US
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Treatment of hydrocarbon oils
Assignee: National Research Council Canada
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Filing: 1956-07-19
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Granted: 1958-09-16
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Expires: 1976-07-19
Abstract
No abstract record available.
Inventors
- 👤 Puddington Ira Edwin
- 👤 Sirianni Aurelio Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:44
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/02; C10G29/04; C10M; C10M1/00; C10M175/00; C10M175/0016; C10M175/0091; F; F16; F16N; F16N39/00; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD FOR THE CONTINUAL TREATMENT OF A HYDROCARBON OIL TO COMBAT ITS CONTINUAL TENDENCY TO DETERIORATION WHICH COMPRISES CONTINUALLY RECYCLING SAID OIL THROUGH A TREATING ZONE IN CONTACT WITH FIXED SOLID CALCIUM AND IN CONTACT WITH A FIXED SOLID SODIUM-PB-SN SOLDER ALLOY CONTAINING 2-15% BY WEIGHT OF SODIUM, SAID PB-SN SOLDER
Claim 2
Independent Claim
52 words
A METHOD FOR THE CONTINUAL TREATMENT OF A HYDROCARBON OIL TO COMBAT ITS CONTINUAL TENDENCY TO DETERIORATION WHICH COMPRISES CONTINUALLY RECYCLING SAID OIL THROUGH A TREATING ZONE IN CONTACT WITH FIXED SOLID CALCIUM AND IN CONTACT WITH A FIXED SOLID SODIUM-PB-SN SOLDER ALLOY CONTAINING 2-15% BY WEIGHT OF SODIUM, SAID PB-SN SOLDER
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |