US3698938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cooling hot dipped galvanized,continuously moving workpieces
Assignee: Individual
•
Filing: 1971-07-27
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Granted: 1972-10-17
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Expires: 1991-07-27
Abstract
Abstract A PROCESS OF COOLING A HOT DIPPED GALVANIZED, CONTINUOUSLY MOVING WORKPICE BY PASSING THE GALVANIZED WORKPIECE OVER AN IDLER ROLL HAVING A FERRIC OXIDE COATING ON ITS OUTER SURFACE AND DIRECTING A COOLING FLUID AT THE POINT OF CONTACT BETWEEN THE ROLL AND THE SURFACE OF THE GALVANIZED WORKPIECE. THE OXIDE COATING ON THE ROLL HAS LITTLE OR NO AFFINITY FOR THE GALVANIZED COATING.
Inventors
- 👤 John T Mayhew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/38; C23C2/003; C23C2/0035
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |