US3264144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a rolled steel product
Assignee: Youngstown Sheet and Tube Co
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Filing: 1963-08-21
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Granted: 1966-08-02
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Expires: 1983-08-21
Abstract
No abstract record available.
Inventors
- 👤 Robert H Frazier
- 👤 Robert G Toth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:26
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/22; C; C21; C21D; C21D8/00; C21D8/02; C21D8/0247; C21D8/0273; C21D8/0221; C21D8/0236; C21D8/0278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF PRODUCING A ROLLED STEEL PRODUCT COMPRISING HOT ROLLING LOW CARBON STEEL TO FROM HOT ROLLED STRIP, CONTINUOUSLY COLD ROLLING THE HOT ROLLED STRIP WITHOUT INTERMEDIATE ANNEAL TO REDUCE ITS THICKNESS AT LEAST 75% TO A THICKNESS NOT GREATER THAN .025" AND CONTINUOUSLY HEAT TREATING THE COLD ROLLED STRIP AT A TEMPERATURE AND FOR A TIME, NOT EXCEEDING FOUR MINUTES, SUCH THAT THE STEEL IS RECRYSTALLIZED 0-95%.
Claim 2
Independent Claim
69 words
A METHOD OF PRODUCING A ROLLED STEEL PRODUCT COMPRISING HOT ROLLING LOW CARBON STEEL TO FROM HOT ROLLED STRIP, CONTINUOUSLY COLD ROLLING THE HOT ROLLED STRIP WITHOUT INTERMEDIATE ANNEAL TO REDUCE ITS THICKNESS AT LEAST 75% TO A THICKNESS NOT GREATER THAN .025" AND CONTINUOUSLY HEAT TREATING THE COLD ROLLED STRIP AT A TEMPERATURE AND FOR A TIME, NOT EXCEEDING FOUR MINUTES, SUCH THAT THE STEEL IS RECRYSTALLIZED 0-95%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |