US3677835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous nickel-base superalloy castings
Assignee: RTX Corp
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Filing: 1970-10-16
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Granted: 1972-07-18
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Expires: 1990-10-16
Abstract
Abstract D R A W I N G HOMOGENEOUS CASTING ARE ACHIEVED IN THE NICKEL-BASE SUPERALLOY SYSTEMS BY THE SUPPRESSION OF DENDRITIC SEGREGATION IN CONTROLLED UNIDIRECTIONAL SOLIDIFICATION, THE CASTING BEING CHARACTERIZED BY CELLULAR AND PLANE FRONT MICROSTRUCTURES.
Inventors
- 👤 John K Tien
- 👤 Robert P Gamble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:32
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; B; B22; B22D; B22D27/00; B22D27/04; B22D27/045; C30; C30B; C30B15/00; C30B29/00; C30B29/10; C30B29/52
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |