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Patent US3055756A successfully refreshed from Google Patents.
US3055756A
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Yttrium containing ferrous products and methods for preparing same
Assignee: Crane Co
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Filing: 1958-12-15
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Granted: 1962-09-25
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Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jerome J Kanter
- 👤 John P Magos
- 👤 Alvin F Lahr
- 👤 Albert H Fleitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:36
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
AN IRON CASTING COMPRISING ABOUT 0.05% TO ABOUT 0.8% BY WEIGHT YITTRIUM, AND THE BALANCE A CAST IRON COMPOSITION CHARACTERIZED BY UNCOMBINED CARBON PARTICLES DISPERSED IN THE FERROUS MATRIX IN THE SPHEROIDAL FORM.
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) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |