US3083122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of ferrous metals
Assignee: Metal Diffusions Ltd
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Filing: 1960-01-15
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Granted: 1963-03-26
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Expires: 1980-01-15
Abstract
No abstract record available.
Inventors
- 👤 Weatherley Eric George
- 👤 Garnett Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:47
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/60; C23C8/62; C23C8/68; C23C10/00; C23C10/28; C23C10/30; C23C10/34; C23C10/36; C23C10/38; C23C10/40; C23C10/42; C23C26/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A METHOD OF COATING A FERROUS ARTICLE WITH ANOTHER METAL BY DIFFUSION, THE STEP OF CARRYING OUT THE DIFFUSION AT A TEMPERATURE ABOVE 900*C. WITH A HALIDE OF THE COATING METAL IN THE PRESENCE OF A MAJOR PROPORTION OF A SOLID INERT MATERIAL AND A MINOR PROPORTION OF NITROUS OXIDE, THE NITROUS OXIDE CONSTITUTING AT LEAST 0.00055% OF THE COMBINED WEIGHT OF THE SAID HALIDE, SOLID INERT MATERIAL AND NITROUS OXIDE.
Claim 2
Dependent Claim
72 words
IN A METHOD OF COATING A FERROUS ARTICLE WITH ANOTHER METAL BY DIFFUSION, THE STEP OF CARRYING OUT THE DIFFUSION AT A TEMPERATURE ABOVE 900*C. WITH A HALIDE OF THE COATING METAL IN THE PRESENCE OF A MAJOR PROPORTION OF A SOLID INERT MATERIAL AND A MINOR PROPORTION OF NITROUS OXIDE, THE NITROUS OXIDE CONSTITUTING AT LEAST 0.00055% OF THE COMBINED WEIGHT OF THE SAID HALIDE, SOLID INERT MATERIAL AND NITROUS OXIDE.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |