US3259492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thallium-zinc-lead-mercury alloys
Assignee: Mertronics Corp
•
Filing: 1965-03-24
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Granted: 1966-07-05
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Howard C Stallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:10
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02; C; C22; C22C; C22C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
AN IMPROVED MERCURY ALLOY MOLD PATTERN COMPOSITION CONSISTING OF 26 TO 32 PERCENT BY WEIGHT THALLIUM, ZINC PRESENT IN AN AMOUNT EFFECTIVE TO SUBSTANTIALLY ELIMINATE OXIDIZATION OF THE THALLIUM, LEAD PRESENT IN AN AMOUNT TO EXTEND THE FREEZING RANGE OF THE ALLOY COMPOSITION AND THE BALANCE ESSENTIALLY ALL MERCURY.
Claim 2
Dependent Claim
49 words
AN IMPROVED MERCURY ALLOY MOLD PATTERN COMPOSITION CONSISTING OF 26 TO 32 PERCENT BY WEIGHT THALLIUM, ZINC PRESENT IN AN AMOUNT EFFECTIVE TO SUBSTANTIALLY ELIMINATE OXIDIZATION OF THE THALLIUM, LEAD PRESENT IN AN AMOUNT TO EXTEND THE FREEZING RANGE OF THE ALLOY COMPOSITION AND THE BALANCE ESSENTIALLY ALL MERCURY.
References Cited (Backward Citations)
US2807848A
Cited
US2857641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |