US1608622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preventing the dissolution of iron and steel in sulphuric acid and pickling baths
Assignee: NEWPORT Co
•
Filing: 1925-09-30
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Granted: 1926-11-30
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Expires: 1945-09-30
Abstract
No abstract record available.
Inventors
- 👤 John G Schmidt
- 👤 Henry R Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:11
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/065; C01; C01B; C01B17/00; C01B17/69; C01B17/74; C01B17/76; C01B17/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-11-29 | 1930-05-31 | 1930-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-29 | 1934-05-31 | 1934-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-29 | 1938-05-31 | 1938-11-30 | $7700.00 | Window Closed / Lapsed |