US3587523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum coating apparatus
Assignee: United States Department of the Navy
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Filing: 1969-02-24
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Granted: 1971-06-28
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Expires: 1989-02-24
Abstract
Abstract A SEALED CHAMBER HAVING MEANS FOR EVACUATING THE SAME AND INCLUDING MEANS FOR SUSPENDING THEREIN WORKPIECE TO BE COATED AND PROVIDING FOR THE HEATING OF SAID WORKPIECE. A LOWER PORTION OF SAID CHAMBER CONTAINS THE MATERIAL FOR COAT- ING IN POWDER FORM. THE COATING POWDER IS AGITATED AND BROUGHT INTO DIRECT CONTACT WITH THE WORKPIECE WHILE IT IS HEATED AND THE CHAMBER IS UNDER VACUUM.
Inventors
- 👤 Sidney Tudor
- 👤 Jack Mironov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:32
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |