Patent US3020326A successfully refreshed from Google Patents.
US3020326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric alloys and elements
Assignee: 3M Co
•
Filing: 1958-08-21
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Granted: 1962-02-06
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Expires: 1978-08-21
Abstract
No abstract record available.
Inventors
- 👤 Russell E Fredrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:04
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/852; C; C22; C22C; C22C28/00; H10N10/853
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A THERMOELECTRIC ALLOY CONSITING ESSENTIALLY OF 60.01 TO 61.16 ATOMIC PERCENT TELLURIUM, SUBSTANTIALLY ALL OF THE BALANCE BEING AN ANTIMONY-BISMUTH CONSTITUENT CONTAINING 65 TO 90 ATOMIC PERCENT ANTIMONY.
Claim 2
Dependent Claim
28 words
A THERMOELECTRIC ALLOY CONSITING ESSENTIALLY OF 60.01 TO 61.16 ATOMIC PERCENT TELLURIUM, SUBSTANTIALLY ALL OF THE BALANCE BEING AN ANTIMONY-BISMUTH CONSTITUENT CONTAINING 65 TO 90 ATOMIC PERCENT ANTIMONY.
References Cited (Backward Citations)
US2241815A
Cited
US2602095A
Cited
US2788382A
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US2762857A
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US2834698A
Cited
US2957937A
Cited
US2953616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |