US2744808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for evaporating chemicals
Assignee: RCA Corp
•
Filing: 1952-08-27
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Granted: 1956-05-08
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Expires: 1972-08-27
Abstract
No abstract record available.
Inventors
- 👤 John E Ruedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:59
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/501; H01J40/00; H01J40/02; H01J40/04; H01J40/06; H01J9/00; H01J9/02; H01J9/12; H01J9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
APPARATUS FOR USE IN EVAPORATING CHEMICAL MATERIALS ONTO A PREDETERMINED AREA WITHIN A HOLLOW EVACUATED CONTAINER, SAID APPARATUS COMPRISING; AN INSULATING TUBULAR SUPPORT MEMBER HAVING AN OPENING AT ONE END FOR DISCHARGING CHEMICAL VAPOR, A FIRST CHEMICAL CARRIER DISPOSED WITHIN SAID SUPPORT MEMBER, SAID FIRST CARRIER COMPRISING A CONDUCTIVE CIRCUIT INCLUDING A FIRST LOOP OF WIRE POSITIONED WITHIN SAID TUBULAR SUPPORT MEMBER AND A PAIR OF WIRES CONNECTED TO SAID FIRST LOOP AND EXTENDING ALONG SAID TUBULAR SUPPORT MEMBER AND TERMINATING NEAR SAID OPENING IN A SECOND WIRE LOOP ADAPTED TO HOLD A QUANTITY OF CHEMICAL TO BE EVAPORATED, AND A SECOND CHEMICAL CARRIER POSITIONED IN SAID TUBULAR SUPPORT MEMBER AND SPACED FROM SAID FIRST LOOP OF WIRE OF SAID FIRST CARRIER, WHEREBY HEATING CURRENTS MAY BE SELECTIVELY AND INDUCTIVELY ESTABLISHED IN SAID FIRST AND SECOND CARRIERS TO EVAPORATE THE CHEMICALS TO BE CARRIED THEREBY.
Claim 2
Dependent Claim
145 words
APPARATUS FOR USE IN EVAPORATING CHEMICAL MATERIALS ONTO A PREDETERMINED AREA WITHIN A HOLLOW EVACUATED CONTAINER, SAID APPARATUS COMPRISING; AN INSULATING TUBULAR SUPPORT MEMBER HAVING AN OPENING AT ONE END FOR DISCHARGING CHEMICAL VAPOR, A FIRST CHEMICAL CARRIER DISPOSED WITHIN SAID SUPPORT MEMBER, SAID FIRST CARRIER COMPRISING A CONDUCTIVE CIRCUIT INCLUDING A FIRST LOOP OF WIRE POSITIONED WITHIN SAID TUBULAR SUPPORT MEMBER AND A PAIR OF WIRES CONNECTED TO SAID FIRST LOOP AND EXTENDING ALONG SAID TUBULAR SUPPORT MEMBER AND TERMINATING NEAR SAID OPENING IN A SECOND WIRE LOOP ADAPTED TO HOLD A QUANTITY OF CHEMICAL TO BE EVAPORATED, AND A SECOND CHEMICAL CARRIER POSITIONED IN SAID TUBULAR SUPPORT MEMBER AND SPACED FROM SAID FIRST LOOP OF WIRE OF SAID FIRST CARRIER, WHEREBY HEATING CURRENTS MAY BE SELECTIVELY AND INDUCTIVELY ESTABLISHED IN SAID FIRST AND SECOND CARRIERS TO EVAPORATE THE CHEMICALS TO BE CARRIED THEREBY.
References Cited (Backward Citations)
US1881616A
Cited
US2667600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |