Patent US3184331A successfully refreshed from Google Patents.
US3184331A
Expired / Lapsed
US
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Process of diffusion coating
Assignee: EIDP Inc
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Filing: 1963-12-16
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Granted: 1965-05-18
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Giles F Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:35
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/18; C23C10/20; C23C10/22; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10S428/9335; Y10S428/934; Y10S428/937; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12729; Y10T428/12771; Y10T428/12861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR THE DIFFUSION COATING OF A FERROUS METAL ARTICLE COMPRISING CONTACTING SAID ARTICLE WITH A SUBSTANTIALLY CARBON FREE MOLTEN BATH CONTAINING AT LEAST ABOUT 10% BY WEIGHT OF A METAL TRANSFER AGENT SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, STRONTIUM, AND MAGNESIUM AND AT LEAST ONE DIFFUSING ELEMENT SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, NICKEL, MANGANESE, AND COBALT, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 800*C. AND THE MELTING POINT OF SAID ARTICLE.
Claim 2
Dependent Claim
80 words
A PROCESS FOR THE DIFFUSION COATING OF A FERROUS METAL ARTICLE COMPRISING CONTACTING SAID ARTICLE WITH A SUBSTANTIALLY CARBON FREE MOLTEN BATH CONTAINING AT LEAST ABOUT 10% BY WEIGHT OF A METAL TRANSFER AGENT SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, STRONTIUM, AND MAGNESIUM AND AT LEAST ONE DIFFUSING ELEMENT SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, NICKEL, MANGANESE, AND COBALT, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE BETWEEN ABOUT 800*C. AND THE MELTING POINT OF SAID ARTICLE.
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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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |