Patent US3153137A successfully refreshed from Google Patents.
US3153137A
Expired / Lapsed
US
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Evaporation source
Assignee: Union Carbide Corp
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Filing: 1961-10-13
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Granted: 1964-10-13
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Expires: 1981-10-13
Abstract
No abstract record available.
Inventors
- 👤 Carl E Drumheller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:03
CPC Classifications
B; B01; B01L; B01L7/00; B01L7/02; B01D; B01D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN EVAPORATION SOURCE COMPRISING, IN COMBINATION, AN ELONGATED GENERALLY CYLINDRICAL CONTAINER HAVING A TOP OPEN END AND A BOTTOM MOUNTED ON A BASE, A TUBULAR ELECTRICAL HEATING ELEMENT HAVING AN ELECTRICALLY INSULATED TERMINAL ON ONE END THEREOF ADAPTED TO BE CONNECTED TO AN ELECTRICAL POWER SUPPLY AND A SECOND TERMINAL AT THE OPPOSITE END THEREOF ADAPTED TO BE CONNECTED TO A GROUND, AND HAVING PERFORATIONS THEREIN POSITIONED WITHIN SAID CYLINDRICAL CONTAINER AND PROTRUDING ABOVE THE TOP OPEN END OF SAID CONTAINER, THE TUBULAR HEATING ELEMENT DEFINING A FREE PASSAGE FOR VAPORS AND THE TUBULAR HEATING ELEMENT AND THE CYLINDRICAL CONTAINER PROVIDING A SPACE THEREBETWEEN ADAPTED TO CONTAIN THEREIN A GRANULAR CHARGE TO BE EVAPORATED, THE VAPORS OF WHICH CAN PASS THROUGH THE PERFORATIONS OF THE TUBULAR HEATING ELEMENT AND OUT
Claim 2
Dependent Claim
130 words
AN EVAPORATION SOURCE COMPRISING, IN COMBINATION, AN ELONGATED GENERALLY CYLINDRICAL CONTAINER HAVING A TOP OPEN END AND A BOTTOM MOUNTED ON A BASE, A TUBULAR ELECTRICAL HEATING ELEMENT HAVING AN ELECTRICALLY INSULATED TERMINAL ON ONE END THEREOF ADAPTED TO BE CONNECTED TO AN ELECTRICAL POWER SUPPLY AND A SECOND TERMINAL AT THE OPPOSITE END THEREOF ADAPTED TO BE CONNECTED TO A GROUND, AND HAVING PERFORATIONS THEREIN POSITIONED WITHIN SAID CYLINDRICAL CONTAINER AND PROTRUDING ABOVE THE TOP OPEN END OF SAID CONTAINER, THE TUBULAR HEATING ELEMENT DEFINING A FREE PASSAGE FOR VAPORS AND THE TUBULAR HEATING ELEMENT AND THE CYLINDRICAL CONTAINER PROVIDING A SPACE THEREBETWEEN ADAPTED TO CONTAIN THEREIN A GRANULAR CHARGE TO BE EVAPORATED, THE VAPORS OF WHICH CAN PASS THROUGH THE PERFORATIONS OF THE TUBULAR HEATING ELEMENT AND OUT
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |