US3060253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric device
Assignee: Monsanto Chemicals Ltd
•
Filing: 1960-02-29
•
Granted: 1962-10-23
•
Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 Bernard S Wildi
- 👤 John E Katon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:40
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/856
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A THERMOELECTRIC DEVICE COMPRISING AN N-TYPE THERMOELECTRIC ELEMENT AND A P-TYPE THERMOELECTRIC ELEMENT WITH ELECTRICAL CONNECTIONS JOINING SAID ELEMENTS AND OTHER ELECTRICAL CONNECTIONS TO SAID ELEMENTS, PROVIDED AT LEAST ONE OF SAID ELEMENTS IS MADE BY THE PROCESS COMPRISING: (1) HEATING AT AT LEAST REFLUX TEMPERATURES A MIXTURE OF PYROMELLITRONITRILE AND A LOWER ALKYL ALCOHOL TO FORM A REACTION PRODUCT HAVING SUBSTANTIALLY 2 MOLES OF ALCOHOL PER MOLE OF PYROMELLITONITRILE, (2) SEPARATING SAID REACTION PRODUCT FROM THE REACTION MIXTURE, (3) FORMING AN ELEMENT UNDER PRESSURE FROM SAID SEPARATED REACTIN PRODUCT, AND (4) HEATING SAID FORMED ELEMENT AT A TEMPERATURE IN THE RANGE OF ABOUT 160 TO 700*C. FOR A TIME SUFFICIENT TO PRODUCE THE DESIRED THERMOELECTRIC ELEMENT.
Claim 2
Dependent Claim
117 words
A THERMOELECTRIC DEVICE COMPRISING AN N-TYPE THERMOELECTRIC ELEMENT AND A P-TYPE THERMOELECTRIC ELEMENT WITH ELECTRICAL CONNECTIONS JOINING SAID ELEMENTS AND OTHER ELECTRICAL CONNECTIONS TO SAID ELEMENTS, PROVIDED AT LEAST ONE OF SAID ELEMENTS IS MADE BY THE PROCESS COMPRISING: (1) HEATING AT AT LEAST REFLUX TEMPERATURES A MIXTURE OF PYROMELLITRONITRILE AND A LOWER ALKYL ALCOHOL TO FORM A REACTION PRODUCT HAVING SUBSTANTIALLY 2 MOLES OF ALCOHOL PER MOLE OF PYROMELLITONITRILE, (2) SEPARATING SAID REACTION PRODUCT FROM THE REACTION MIXTURE, (3) FORMING AN ELEMENT UNDER PRESSURE FROM SAID SEPARATED REACTIN PRODUCT, AND (4) HEATING SAID FORMED ELEMENT AT A TEMPERATURE IN THE RANGE OF ABOUT 160 TO 700*C. FOR A TIME SUFFICIENT TO PRODUCE THE DESIRED THERMOELECTRIC ELEMENT.
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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |