US3056694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Galvanizing process
Assignee: Inland Steel Co
•
Filing: 1958-07-11
•
Granted: 1962-10-02
•
Expires: 1978-07-11
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Mehler
- 👤 John G Rothfuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:24
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/26; C23C2/261; C23C2/28; C23C2/29; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CONTINUOUS PROCESS FOR PRODUCING FLAT GALVANIZED FERROUS STRIP HAVING A UNIFORMLY SMOOTH, NON-SPANGLED, ADHERENT, GALVANIZED COATING CONTAINING ABOUT 4-20 WT. PERCENT IRON AND READILY SUSCEPITBLE TO PAINTING, SAID PROCESS COMPRISING: DIPPING A CONTINUOUS HEATED FERROUS BASE STRIP, HAVING A THICKNES OF ABOUT 14 TO 25 GAUGE, IN A BATH OF MOLTEN ZINC CONTAINING ABOUT 0.05-0.2 WT. PERCENT ALUMINUM, AND COATING SAID BASE STRIP WITH ABOUT 0.5-1.5OZ. OF SAID ZINC PER SQUARE FOOT OF STRIP; PASSING SAID CONTINUOUS STRIP THROUGH A FURNACE, AFTER COATING TO HEAT SAID STRIP TO A STRIP TEMPERATURE SUBSTANTIALLY ABOVE 850*F. BUT BELOW ABOUT 1500* F. FOR MORE THAN ABOUT 4 SECONDS BUT SUBSTANTIALLY LESS THAN 40 SECONDS; AND THEN COOLING SAID STRIP.
Claim 2
Dependent Claim
117 words
A CONTINUOUS PROCESS FOR PRODUCING FLAT GALVANIZED FERROUS STRIP HAVING A UNIFORMLY SMOOTH, NON-SPANGLED, ADHERENT, GALVANIZED COATING CONTAINING ABOUT 4-20 WT. PERCENT IRON AND READILY SUSCEPITBLE TO PAINTING, SAID PROCESS COMPRISING: DIPPING A CONTINUOUS HEATED FERROUS BASE STRIP, HAVING A THICKNES OF ABOUT 14 TO 25 GAUGE, IN A BATH OF MOLTEN ZINC CONTAINING ABOUT 0.05-0.2 WT. PERCENT ALUMINUM, AND COATING SAID BASE STRIP WITH ABOUT 0.5-1.5OZ. OF SAID ZINC PER SQUARE FOOT OF STRIP; PASSING SAID CONTINUOUS STRIP THROUGH A FURNACE, AFTER COATING TO HEAT SAID STRIP TO A STRIP TEMPERATURE SUBSTANTIALLY ABOVE 850*F. BUT BELOW ABOUT 1500* F. FOR MORE THAN ABOUT 4 SECONDS BUT SUBSTANTIALLY LESS THAN 40 SECONDS; AND THEN COOLING SAID STRIP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |