US3748090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporation crucible
Assignee: Xerox Corp
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Filing: 1971-12-20
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Granted: 1973-07-24
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Expires: 1991-12-20
Abstract
Abstract An evaporation crucible which comprises a central tubular section which contains a longitudinal open slot. A plate is connected along one edge of the slot and extends at an angle within the tubular portion for a distance short of the inside wall of the tubular portion.
Inventors
- 👤 A Ciuffini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:22
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/243; C23C14/26; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
50 words
An evaporation crucible comprising a central, tubular portion containing a longitudinal slot, a plate member connected at one edge of said slot and extending within said crucible to a distance short of the inside wall of said crucible; with said tubular portion further containing an end plate at each end.
Claim 2
Dependent Claim
50 words
An evaporation crucible comprising a central, tubular portion containing a longitudinal slot, a plate member connected at one edge of said slot and extending within said crucible to a distance short of the inside wall of said crucible; with said tubular portion further containing an end plate at each end.
Claim 3
Dependent Claim
33 words
The crucible of claim 1 in which at least one portion of the internal surface of the tubular portion is divided into a plurality of compartments by a series of equally spaced plates.
Claim 4
Dependent Claim
13 words
The crucible of claim 1 in which said crucible is constructed of metal.
Claim 5
Dependent Claim
29 words
The crucible of claim 1 in which the plate member is positioned at an angle to substantially obstruct the slot opening when the crucible is tilted at an angle.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |