Patent US2887407A successfully refreshed from Google Patents.
US2887407A
Expired / Lapsed
US
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Preparation of diffusion coatings on metals
Assignee: MANUFACTURERS CHEMICAL Corp
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Filing: 1957-08-05
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Granted: 1959-05-19
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Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Koch Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:13
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/06; C23C30/00; C23C30/005; C23C8/00; C23C8/06; C23C8/08; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A PROCESS FOR DIFFUSION COATING A BASE METAL WITH A COATING METAL BY HALIDE SUBSTITUTION, THE STEPS COMPRISING POSITIONING SAID BASE METAL IN A FIRST FURNACE, POSITIONING SAID COATING METAL IN A SECOND FURNACE COMMUNICATING WITH SAID FIRST FURNACE, POSITIONING A HALIDE OF SAID COATING METAL IN A THIRD FURNACE COMMUNICATING WITH SAID SECOND FURNACE, EVACUATING SAID THREE FURNACES, APPLYING HEAT TO SAID THIRD FURNACE TO VAPORIZE SAID HALIDE, APPLYING HEAT TO SAID SECOND FURNACE TO REACT SAID HALIDE WITH SAID COATING METAL TO PRODUCE A HALIDE REACTION PRODUCT,
Claim 2
Dependent Claim
90 words
IN A PROCESS FOR DIFFUSION COATING A BASE METAL WITH A COATING METAL BY HALIDE SUBSTITUTION, THE STEPS COMPRISING POSITIONING SAID BASE METAL IN A FIRST FURNACE, POSITIONING SAID COATING METAL IN A SECOND FURNACE COMMUNICATING WITH SAID FIRST FURNACE, POSITIONING A HALIDE OF SAID COATING METAL IN A THIRD FURNACE COMMUNICATING WITH SAID SECOND FURNACE, EVACUATING SAID THREE FURNACES, APPLYING HEAT TO SAID THIRD FURNACE TO VAPORIZE SAID HALIDE, APPLYING HEAT TO SAID SECOND FURNACE TO REACT SAID HALIDE WITH SAID COATING METAL TO PRODUCE A HALIDE REACTION PRODUCT,
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |