US3320084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor diffusion process and protection means
Assignee: Howmet Turbine Components Corp
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Filing: 1963-09-20
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Granted: 1967-05-16
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Nick G Lirones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:19
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; C23C10/00; C23C10/04; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN THE PROCESS OF CHROMIZING AND ALUMINIZING METAL PARTS BY VAPOR DIFFUSION TO PROVIDE A VAPOR DIFFUSION COATING ON THE SURFACE OF THE METAL PARTS, THE IMPROVEMENT WHEREBY, WHEN THE METAL PART IS EXPOSED ENTIRELY TO THE VAPOR DIFFUSION TREATMENT FOR CHROMIZING OR ALUMINIZING, ONLY SELECTED PORTIONS OF THE PART ARE COATED WHILE OTHER PORTIONS ARE PROTECTED FROM THE VAPORS TO PREVENT FORMATION OF THE DIFFUSION COATING, CONSISTING OF COVERING SAID OTHER PORTIONS OF THE METAL PART WITH A LAYER OF A COMPOSITION SELECTED FROM THE GROUP CONSISTING OF LITHIUM ALUMINUM SILICATE, LITHIUM ALUMINUM SILICATE IN ADMIXTURE WITH AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZIRCONIUM, AND GRAPHITE IN ADMIXTURE WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, CHROMIUM AND AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND ALUMINUM IN FINELY DIVIDED FORM, SAID LAYER HAVING A THICKNESS OF AT LEAST 1/16 INCH.
Claim 2
Dependent Claim
156 words
IN THE PROCESS OF CHROMIZING AND ALUMINIZING METAL PARTS BY VAPOR DIFFUSION TO PROVIDE A VAPOR DIFFUSION COATING ON THE SURFACE OF THE METAL PARTS, THE IMPROVEMENT WHEREBY, WHEN THE METAL PART IS EXPOSED ENTIRELY TO THE VAPOR DIFFUSION TREATMENT FOR CHROMIZING OR ALUMINIZING, ONLY SELECTED PORTIONS OF THE PART ARE COATED WHILE OTHER PORTIONS ARE PROTECTED FROM THE VAPORS TO PREVENT FORMATION OF THE DIFFUSION COATING, CONSISTING OF COVERING SAID OTHER PORTIONS OF THE METAL PART WITH A LAYER OF A COMPOSITION SELECTED FROM THE GROUP CONSISTING OF LITHIUM ALUMINUM SILICATE, LITHIUM ALUMINUM SILICATE IN ADMIXTURE WITH AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZIRCONIUM, AND GRAPHITE IN ADMIXTURE WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF NICKEL, CHROMIUM AND AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND ALUMINUM IN FINELY DIVIDED FORM, SAID LAYER HAVING A THICKNESS OF AT LEAST 1/16 INCH.
References Cited (Backward Citations)
US2685543A
Cited
US3114961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |