Patent US3838256A successfully refreshed from Google Patents.
Patent US3574650A successfully refreshed from Google Patents.
US3574650A
Expired / Lapsed
US
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Vacuum vapor deposition with control of elevation of metal melt
Assignee: RTX Corp
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Filing: 1969-03-13
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Granted: 1971-04-13
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Expires: 1989-03-13
Abstract
Abstract IN THE PROCESSES FOR FORMING PROTECTIVE COATINGS ON METAL SUBSTRATES, PARTICULARLY THE NICKEL-BASE AND COLBALTBASE SUPERALLOYS, BY MELTING A COATING MATERIAL TO CAUSE VAPORIZATION THEREOF, A MONOCHROMATIC LIGHT BEAM IN UTI- LIZED IN SENSING AND CONTROLLING DISPLACEMENT OF THE SURFACE ELEVATION OF THE MELT.
Inventors
- 👤 Randolph D House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:10
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/54; C23C14/542; C23C14/543; C23C14/24; C23C14/246; G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |