US2559445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing scale from steel
Assignee: Hitachi Rail STS USA Inc
•
Filing: 1946-12-12
•
Granted: 1951-07-03
•
Expires: 1966-12-12
Abstract
No abstract record available.
Inventors
- 👤 John A Lotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:22
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08; C23G1/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD FOR REMOVING SCALE FROM LOW SILICON CONTENT STEELS WITHOUT PITTING WHICH COMPRISES SUBJECTING THE STEELS TO THE ACTION OF A PICKLING BATH CONSISTING OF 10% BY VOLUME HYDROCHLORIC ACID (36%), 5% BY VOLUME OF PHOSPHORIC ACID (85%), AND WATER.
Claim 2
Independent Claim
41 words
A METHOD FOR REMOVING SCALE FROM LOW SILICON CONTENT STEELS WITHOUT PITTING WHICH COMPRISES SUBJECTING THE STEELS TO THE ACTION OF A PICKLING BATH CONSISTING OF 10% BY VOLUME HYDROCHLORIC ACID (36%), 5% BY VOLUME OF PHOSPHORIC ACID (85%), AND WATER.
References Cited (Backward Citations)
US1195704A
Cited
AU1922329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |