Patent US2398945A successfully refreshed from Google Patents.
Patent US3344768A successfully refreshed from Google Patents.
US3344768A
Expired / Lapsed
US
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Powder evaporation apparatus
Assignee: Unisys Corp
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Filing: 1965-08-30
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Granted: 1967-10-03
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Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Ermont V Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:46
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
A VAPOR DEPOSITION APPARATUS COMPRISING A VACUUM CHAMBER, A FURNACE OF RADIANT HEAT IN SAID CHAMBER, AND A CONTAINER FOR POWDER IN SAID FURNACE, SAID CONTAINER INCLUDING SUCCESSIVE CONVOLUTIONS OF A CLOSELY WOUND WIRE REFRACTORY METALLIC MATERIAL FORMING A CYLINDER HAVING AN IMPREVIOUS CONE AT EACH END WITH THE BASE OF EACH CONE FASTENED TO AN END OF THE CYLINDER.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |