US2436432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making hydrochloric acid
Assignee: EANSTEEL METALLURG CORP
•
Filing: 1943-02-26
•
Granted: 1948-02-24
•
Expires: 1963-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:24
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0053; B01J19/006; C; C01; C01B; C01B7/00; C01B7/01; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/00768
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1141266A
Cited
US1398224A
Cited
US1654181A
Cited
US1563732A
Cited
US1969381A
Cited
US2221787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |