US3697257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scrap recovery process
Assignee: Horizons Research Inc
•
Filing: 1969-11-07
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Granted: 1972-10-10
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Expires: 1989-11-07
Abstract
Abstract THE RECOVERY OF METAL VALUES IN SCRAP MATERIALS BY DESTRUCTIVE DISTILLATION REMOVAL OF ORGANIC NON-METAL MATERIALS, AT TEMPERATURES WHICH LEAVE THE METAL RELATIVELY UNAFFECTED.
Inventors
- 👤 John E Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:37
CPC Classifications
C; C22; C22B; C22B7/00; C22B1/00; C22B1/005; C22B7/04; C22B9/00; C22B9/10; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |