Patent US3250643A successfully refreshed from Google Patents.
US3250643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for decoating utilizing a heated fluidized bed
Assignee: General Electric Co
•
Filing: 1965-09-30
•
Granted: 1966-05-10
•
Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 David A Sergent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:00
CPC Classifications
B; B08; B08B; B08B7/00; B08B7/0064; B08B7/0071; B08B7/0078; B08B7/0085; B08B2220/00; B08B2220/04; Y; Y10; Y10S; Y10S118/00; Y10S118/05; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD FOR DECOATING A METAL BODY HAVING A COATING CONTAINING AN ORGANIC MATERIAL WHICH COMPRISES PLACING THE BODY IN A BED OF GRANULAR MATERIAL LOCATED IN A FLUIDIZING CHAMBER, COVERING THE CHAMBER, HEATING THE CHAMBER WITH HEATING MEANS, INTRODUCING AIR INTO THE FLUIDIZING CHAMBER AT SUFFICIENT VELOCITY TO SUSPEND THE GRANULAR MATERIAL, HEATING THE BODY TO A TEMPERATURE ABOVE THE DECOMPOSITION TEMPERATURE OF THE ORGANIC MATERIAL FOR A SUFFICIENT TIME PERIOD TO COMBUST SUBSTANTIALLY ALL OF THE ORGANIC MATERIAL WITHOUT AFFECTING THE MATERIAL OF THE BODY, REMOVING THE TREATED BODY FROM THE FLUIDIZING BED AND PLACING THE BODY IN A COOLING CHAMBER AT AMBIENT TEMPERATURES TO EFFECT COOLING OF THE BODY BY TRANSFERRING HEAT FROM THE BODY TO THE COOLING CHAMBER.
Claim 2
Independent Claim
122 words
A METHOD FOR DECOATING A METAL BODY HAVING A COATING CONTAINING AN ORGANIC MATERIAL WHICH COMPRISES PLACING THE BODY IN A BED OF GRANULAR MATERIAL LOCATED IN A FLUIDIZING CHAMBER, COVERING THE CHAMBER, HEATING THE CHAMBER WITH HEATING MEANS, INTRODUCING AIR INTO THE FLUIDIZING CHAMBER AT SUFFICIENT VELOCITY TO SUSPEND THE GRANULAR MATERIAL, HEATING THE BODY TO A TEMPERATURE ABOVE THE DECOMPOSITION TEMPERATURE OF THE ORGANIC MATERIAL FOR A SUFFICIENT TIME PERIOD TO COMBUST SUBSTANTIALLY ALL OF THE ORGANIC MATERIAL WITHOUT AFFECTING THE MATERIAL OF THE BODY, REMOVING THE TREATED BODY FROM THE FLUIDIZING BED AND PLACING THE BODY IN A COOLING CHAMBER AT AMBIENT TEMPERATURES TO EFFECT COOLING OF THE BODY BY TRANSFERRING HEAT FROM THE BODY TO THE COOLING CHAMBER.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |