US3228805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing homogeneous thermoelectric alloy slugs
Assignee: Texas Instruments Inc
•
Filing: 1962-09-17
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Granted: 1966-01-11
•
Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph W Waseleski
- 👤 Ernest M Jost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:23
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/852; Y; Y10; Y10S; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OF PRODUCING HOMOGENEOUS THERMOELECTRIC ALLOY SLUGS OF CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF BISMUTH, LEAD, ANTIMONY, TELLURIUM, SELENIUM AND TIN, COMPRISING STIRRING CONSTITUENTS SELECTED FROM SAID GROUP AND HEATING THEM AT A FIRST ELEVATED TEMPERATURE WHILE IN A CONTAINER UNDER A PROTECTIVE ATMOSPHERE FOR A TIME ADAPTED TO MELT AND SUBSTANTIALLY REACT THEM TO FORM AN ALLOY, REMOVING THE MELT DROPWISE FROM THE CONTAINER INTO A COOLANT FOR RAPID COOLING TO SOLIDIFY AND CRYSTALLIZE THE ALLOY INTO PELLETS, PLACING THE PELLETS IN A VESSEL CONTAINING A PROTECTIVE ATMOSPHERE, HEATING THE LAST-NAMED VESSEL AND ITS CONTENTS AT A SECOND ELEVATED TEMPERATURE WHICH IS LESS THAN THE MELTING TEMPERATURE OF SAID PELLETS TO REDUCE SEGREGATION OF THE CRYSTALLIZED CONSTITUENTS OF THE PELLETS, REMOVING THE HEAT TREATED PELLETS FROM THE CONTAINER AND PRESSING THEM INTO SLUGS.
Claim 2
Independent Claim
136 words
THE METHOD OF PRODUCING HOMOGENEOUS THERMOELECTRIC ALLOY SLUGS OF CONSTITUENTS SELECTED FROM THE GROUP CONSISTING OF BISMUTH, LEAD, ANTIMONY, TELLURIUM, SELENIUM AND TIN, COMPRISING STIRRING CONSTITUENTS SELECTED FROM SAID GROUP AND HEATING THEM AT A FIRST ELEVATED TEMPERATURE WHILE IN A CONTAINER UNDER A PROTECTIVE ATMOSPHERE FOR A TIME ADAPTED TO MELT AND SUBSTANTIALLY REACT THEM TO FORM AN ALLOY, REMOVING THE MELT DROPWISE FROM THE CONTAINER INTO A COOLANT FOR RAPID COOLING TO SOLIDIFY AND CRYSTALLIZE THE ALLOY INTO PELLETS, PLACING THE PELLETS IN A VESSEL CONTAINING A PROTECTIVE ATMOSPHERE, HEATING THE LAST-NAMED VESSEL AND ITS CONTENTS AT A SECOND ELEVATED TEMPERATURE WHICH IS LESS THAN THE MELTING TEMPERATURE OF SAID PELLETS TO REDUCE SEGREGATION OF THE CRYSTALLIZED CONSTITUENTS OF THE PELLETS, REMOVING THE HEAT TREATED PELLETS FROM THE CONTAINER AND PRESSING THEM INTO SLUGS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |