Patent US1637823A successfully refreshed from Google Patents.
US3360366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of grain refining zinc
Assignee: Ilikon Corp
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Filing: 1965-01-25
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Granted: 1967-12-26
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Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Laszlo J Bonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
C; C22; C22C; C22C18/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF REDUCING THE GRAIN SIZE OF ZINCE AND ZINC ALLOY PRODUCTS, SAID ZINC ALLOYS CONTAINING AT LEAST 80 WEIGHT PERCENT OF ZINC SAID PRODUCTS BEING FORMED FROM A MELT, WHICH METHOD COMPRISES ADDING TO THE MELT AN AMOUNT OF YTTRIUM IN THE RANGE OF 0.001 TO ABOUT 5.0 PERCENT BY WEIGHT.
Claim 2
Independent Claim
53 words
A METHOD OF REDUCING THE GRAIN SIZE OF ZINCE AND ZINC ALLOY PRODUCTS, SAID ZINC ALLOYS CONTAINING AT LEAST 80 WEIGHT PERCENT OF ZINC SAID PRODUCTS BEING FORMED FROM A MELT, WHICH METHOD COMPRISES ADDING TO THE MELT AN AMOUNT OF YTTRIUM IN THE RANGE OF 0.001 TO ABOUT 5.0 PERCENT BY WEIGHT.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |