US3272623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inoculating alloys consisting of si-al-ca-ba-mn-zr-fe
Assignee: Elkem Metals Co LP
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Filing: 1963-10-28
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Granted: 1966-09-13
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Crafts Walter
- 👤 Peter F Wieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:15
CPC Classifications
C; C22; C22C; C22C28/00; C22C35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
AN ADDITION ALLOY FOR USE IN THE MANUFACTURE OF CAST IRON CONSISTING ESSENTIALLY OF ABOUT 35 TO ABOUT 85% SILICON, ABOUT 0.5 TO ABOUT 1.5% ALUMINUM, ABOUT 0.5 TO ABOUT 4% CALCIUM, ABOUT 0.5 TO ABOUT 4% BARIUM, ABOUT 2 TO ABOUT 7% MANGANESE, ABOUT 2 TO ABOUT 7% ZIRCONIUM, BALANCE IRON.
Claim 2
Dependent Claim
52 words
AN ADDITION ALLOY FOR USE IN THE MANUFACTURE OF CAST IRON CONSISTING ESSENTIALLY OF ABOUT 35 TO ABOUT 85% SILICON, ABOUT 0.5 TO ABOUT 1.5% ALUMINUM, ABOUT 0.5 TO ABOUT 4% CALCIUM, ABOUT 0.5 TO ABOUT 4% BARIUM, ABOUT 2 TO ABOUT 7% MANGANESE, ABOUT 2 TO ABOUT 7% ZIRCONIUM, BALANCE IRON.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |