US2319669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing hydroxylamine hydrochloride
Assignee: Ansul Chemical Co
•
Filing: 1941-11-24
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Granted: 1943-05-18
•
Expires: 1961-11-24
Abstract
No abstract record available.
Inventors
- 👤 Philip J Ehman
- 👤 Walter O Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:02
CPC Classifications
C; C07; C07C; C07C259/00; C07C259/02; C01; C01B; C01B21/00; C01B21/082; C01B21/14; C01B21/1409; C01B21/1454
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) | 1946-05-17 | 1946-11-16 | 1947-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-17 | 1950-11-16 | 1951-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-17 | 1954-11-16 | 1955-05-18 | $7700.00 | Window Closed / Lapsed |