Patent US4416522A successfully refreshed from Google Patents.
Patent US3202794A successfully refreshed from Google Patents.
US3202794A
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Permanent magnet transverse electron beam evaporation source
Assignee: THERMIONICS LAB Inc
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Filing: 1963-02-18
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Granted: 1965-08-24
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Expires: 1983-02-18
Abstract
No abstract record available.
Inventors
- 👤 Robert L Shrader
- 👤 Everette M Whitson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:19
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/305; H01J37/3053; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28; C23C14/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
IN COMBINATION: (A) A CRUCIBLE HAVING A RECESS IN ITS TOP FOR RECEIVING MATERIAL TO BE VAPORIZED; (B) A U-SHAPED MAGNET HAVING ITS POLE PIECES POSITIONED ON DIAMETRICALLY OPPOSED SIDES OF SAID CRUCIBLE AND PROJECTING ABOVE THE TOP THEREOF FOR CREATING A MAGNETIC FIELD OVER SAID RECESS; (C) AN ELECTRON GUN POSITIONED ADJACENT TO A SIDE OF SAID CRUCIBLE INTERMEDIATE SAID DIAMETRICALLY OPPOSED SIDES AND BELOW SAID RECESS; (D) SAID GUN EMITTING ELECTRONS IN A PATH PARALLEL TO SAID SIDE OF SAID CRUCIBLE AND TRANSVERSE TO SAID MAGNETIC FIELD; (E) SAID MAGNETIC FIELD BENDING SAID PATH OF ELECTRONS SO THAT IT WILL STRIKE THE MATERIAL IN SAID RECESS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |