US3261712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for diffusion coating metals
Assignee: EIDP Inc
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Filing: 1965-03-15
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Granted: 1966-07-19
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Giles F Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:38
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/18; C23C10/20; C23C10/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
IN AN ALLOY DIFFUSION COATING PROCESS WHEREIN A METAL ARTICLE IS CONTACTED WITH A MOLTEN BATH CONTAINING AT LEAST ABOUT 10% BY WEIGHT OF A METAL TRANSFER AGENT SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM AND STRONTIUM AND AT LEAST ONE METAL DIFFUSING ELEMENT, THE IMPROVEMENT WHICH COMPRISES INCLUDING IN SAID MOLTEN BATH A CONTROLLED AMOUNT OF A NITRIDE OF SAID METAL TRANSFER AGENT, SAID AMOUNT BEING IN THE RANGE FROM ABOUT 3% BY WEIGHT TO SATURATION OF SAID BATH.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |