US2666003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating strip
Assignee: Bethlehem Steel Corp
•
Filing: 1949-02-18
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Granted: 1954-01-12
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Expires: 1969-02-18
Abstract
No abstract record available.
Inventors
- 👤 Robert S A Dougherty
- 👤 Alan C Chamberlin
- 👤 Henry W Nieman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:05
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/561; C21D8/00; C21D8/02; C21D8/0221; C21D8/0242; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A PROCESS FOR TREATING STEEL STRIP, THE STEPS OF CONTINUOUSLY FEEDING THE STRIP THROUGH A HEATING ZONE TO HEAT THE STRIP TO A TEMPERATURE NOT LESS THAN 1200* F., CONTINUOUSLY FEEDING THE STRIP THUS HEATED THROUGH A COOLING ZONE HAVING A NONOXIDIZING ATMOSPHERE, FLEXING STRIP BEYOND ITS ELASTIC LIMIT IN THE COOLING ZONE WHILE IT IS AT A TEMPERATURE NOT LOWER THAN 650* F. BUT AT A TEMPERATURE LOWER THAN THE CRITICAL RANGE, AND FLEXING THE STRIP BEYOND ITS ELASTIC LIMIT IN THE COOLING ZONE AFTER IT IS COOLED BELOW 650* F.
Claim 2
Dependent Claim
93 words
IN A PROCESS FOR TREATING STEEL STRIP, THE STEPS OF CONTINUOUSLY FEEDING THE STRIP THROUGH A HEATING ZONE TO HEAT THE STRIP TO A TEMPERATURE NOT LESS THAN 1200* F., CONTINUOUSLY FEEDING THE STRIP THUS HEATED THROUGH A COOLING ZONE HAVING A NONOXIDIZING ATMOSPHERE, FLEXING STRIP BEYOND ITS ELASTIC LIMIT IN THE COOLING ZONE WHILE IT IS AT A TEMPERATURE NOT LOWER THAN 650* F. BUT AT A TEMPERATURE LOWER THAN THE CRITICAL RANGE, AND FLEXING THE STRIP BEYOND ITS ELASTIC LIMIT IN THE COOLING ZONE AFTER IT IS COOLED BELOW 650* F.
References Cited (Backward Citations)
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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) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |