US3459587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling coating thickness
Assignee: United States Steel Corp
•
Filing: 1967-02-02
•
Granted: 1969-08-05
•
Expires: 1987-02-02
Abstract
No abstract record available.
Inventors
- 👤 Darrell L Hunter
- 👤 James C Siple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/14; C23C2/16; C23C2/18; C23C2/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US602532A
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US811854A
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US794704A
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US1672526A
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US2243979A
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US2160864A
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US2370495A
Cited
US2390007A
Cited
US2950991A
Cited
US3231415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |