US2762728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel pickling process
Assignee: Lyon Inc
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Filing: 1953-10-02
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Granted: 1956-09-11
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Expires: 1973-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edgar A Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:39
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08; C23G1/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD OF PICKLING WROUGHT STAINLESS STEEL, THAT COMPRISS THE STEP OF IMMERSING THE STEEL IN A BATH CONSISTING OF AN AQUEOUS PICKLING SOLUTION OF 5-20 WEIGHT PER CENT SULFURIC ACID AND 5-20 WEIGHT PER CENT NITRIC ACID AT A TEMPERATURE OF 120-180* F.
Claim 2
Independent Claim
44 words
A METHOD OF PICKLING WROUGHT STAINLESS STEEL, THAT COMPRISS THE STEP OF IMMERSING THE STEEL IN A BATH CONSISTING OF AN AQUEOUS PICKLING SOLUTION OF 5-20 WEIGHT PER CENT SULFURIC ACID AND 5-20 WEIGHT PER CENT NITRIC ACID AT A TEMPERATURE OF 120-180* F.
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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |