Patent US3572419A successfully refreshed from Google Patents.
US3572419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doubly-oriented single crystal castings
Assignee: RTX Corp
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Filing: 1969-03-13
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Granted: 1971-03-23
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Expires: 1989-03-13
Abstract
Abstract AN APPARATUS AND METHOD BY WHICH TO PRODUCE SINGLE CRYSTAL PARTS IN WHICH THE ORIENTATION OF THE DENDRITIC GROWTH WITHIN THE CRYSTAL IN TWO PLANES AT RIGHT ANGLES TO ONE ANOTHER IS DESCRIBED. IN EFFECT THIS PRODUCES AN ORIENTATION IN ALL THREE RIGHT ANGLE PLANES OF THE CAST ARTICLE.
Inventors
- 👤 Robert B Barrow
- 👤 Barry J Piearcey
- 👤 Larry W Sink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:14
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/04; B22D27/045; C; C30; C30B; C30B11/00; C30B11/14; 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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |