US3565708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon-steel disintegrating composition and method
Assignee: JACK C ELLIS
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Filing: 1968-03-08
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Granted: 1971-02-23
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Expires: 1988-03-08
Abstract
Abstract THE METAL-DISINTEGRATING COMPOSITION CONSIST OF A MIXTURE IN WATER OF SULPHURIC ACID, NITRIC ACID, ACETIC ACID AND SODIUM CHLORIDE. THE PROPORTIONS OF INGREDIENTS ARE SUCH THAT THE COMPOSTION WILL DISINTEGRATE STEELS, SUCH AS HIGH SPEED STEEL AND CARBON STEEL, COMMONLY EMPLOYED FOR THE MANUFACTURE OF MACHINE TOOLS. THE COMPOSITION WILL NOT CAUSE DETERIORATION OF MANY OF THE METALS WHICH ARE COMMONLY UTILIZED FOR PARTS WHICH ARE WORKED BY MACHINE TOOLS. THE METAL-DISINTERGRATING METHOD COMPRISES THE APPLICATION OF THE COMPOSITION TO THE STEEL, UNDER A WIDE RANGE OF TEMPERATURE CONDITIONS.
Inventors
- 👤 Jack C Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |