Patent US3085028A successfully refreshed from Google Patents.
US3085028A
Expired / Lapsed
US
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Method and means for depositing silicon
Assignee: Wean Engineering Co Inc
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Filing: 1958-02-10
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Granted: 1963-04-09
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Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 John E Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:23
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/18; C23C10/20; C23C10/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
THE METHOD OF COATING OF FERROUS METAL WITH SILICON WHICH COMPRISES CLEANING AND WASHING THE FERROUS METAL, IMMERSING IT IN A MIXTURE COMPRISING 1% TO 40% SILICON, THE BALANCE BEING SUBSTANTIALLY LIQUID METALLIC SODIUM AND PROTECTING THE MIXTURE WITH AN INERT ATMOSPHERE.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |