US3712796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat shield for chemical waste incinerator
Assignee: EIDP Inc
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Filing: 1971-02-25
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Granted: 1973-01-23
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Expires: 1991-02-25
Abstract
Abstract IN A CHEMICAL WASTE INCINERATOR HAVING A COMBUSTION CHAMBER LINED WITH A REFRACTORY MATERIAL IN COMMUNICATION WITH A SPRAY QUENCH CHAMBER LINED WITHA CORROSION RESISTANT MATERIAL, SUCH AS CARBON BLOCKS, AND AN ANNULAR HEAT SHIELD AT THE JUNCTURE OF THE COMBUSTION CHAMBER AND QUENCH CHAMBER, THERE IS PROVIDED AN IMPROVEMENT WHEREIN THE HEAT SHIELD CONSISTS ESSENTIALLY OF A CORROSION RESISTANT OUTER LAYER SEPARATED FROM A HEAT RESISTANT INNER LAYER BY A RESILIENT INSULATING BARRIER OF HIGH THERMAL EFFICIENCY.
Inventors
- 👤 W Sansom
- 👤 F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:36
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/04; C; C01; C01B; C01B7/00; C01B7/01; F23G; F23G7/00; F23G7/008; Y; Y10; Y10S; Y10S261/00; Y10S261/54; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |