US3249075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive mixtures to combat high temperature corrosion and ash bonding during the operation of furnaces
Assignee: Combustion Engineering Inc
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Filing: 1963-03-08
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Granted: 1966-05-03
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Nelson Wharton
- 👤 Lisle Edward Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:39
CPC Classifications
C; C23; C23F; C23F15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD FOR IMPROVING FURNACE OPERATION COMPRISING PROVIDING FOR THE PRESENCE IN THE COMBUSTION PRODUCTS IN SAID FURNACE OF A MIXTURE COMPRISING FROM 1% TO 99% BASED ON THE WEIGHT OF SAID MIXTURE OF (A) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ANTIMONY, ANTIMONY OXIDES AND COMPOUNDS WHICH PRODUCE ANTIMONY OXIDES UNDER FURNACE CONDITIONS AND FROM 99% TO 1% BASED ON THE WEIGHT OF SAID MIXTURE OF (B) A SILICEOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA AND COMPOUNDS OF SILICA WITH AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM OXIDE, POTASSIUM OXIDE, CALCIUM OXIDE, MAGNESIUM OXIDE, TITA-
Claim 2
Independent Claim
103 words
A METHOD FOR IMPROVING FURNACE OPERATION COMPRISING PROVIDING FOR THE PRESENCE IN THE COMBUSTION PRODUCTS IN SAID FURNACE OF A MIXTURE COMPRISING FROM 1% TO 99% BASED ON THE WEIGHT OF SAID MIXTURE OF (A) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ANTIMONY, ANTIMONY OXIDES AND COMPOUNDS WHICH PRODUCE ANTIMONY OXIDES UNDER FURNACE CONDITIONS AND FROM 99% TO 1% BASED ON THE WEIGHT OF SAID MIXTURE OF (B) A SILICEOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA AND COMPOUNDS OF SILICA WITH AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM OXIDE, POTASSIUM OXIDE, CALCIUM OXIDE, MAGNESIUM OXIDE, TITA-
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |