US2843200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oils
Assignee: Gulf Research and Development Co
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Filing: 1954-05-10
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Granted: 1958-07-15
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Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 Albert G Rocchini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:59
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1291
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
61 words
IN A PROCESS FOR BURNING A RESIDUAL FUEL OIL YIELDING A CORROSIVE VANDIUM-CONTAINING ASH, WHEREIN THE ASH CORROSIVELY ATTACKS THE MATERIALS OF THE COMBUSTION ZONE, THE METHOD OF RETARDING SAID CORROSIVE ATTACK WHICH COMPRISES UNIFORMLY BLENDING WITH SAID FUEL OIL, AT LEAST AT THE POINT OF COMBUSTION THEROF, A FINELY DIVIDED PRECIPITATED HYDRATED CALCIUM SILICATE, AND SUBJECTING THE BLEND TO COMBUSTION.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |