US2430674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bleaching
Assignee: Mathieson Alkali Works Inc
•
Filing: 1943-01-11
•
Granted: 1947-11-11
•
Expires: 1963-01-11
Abstract
No abstract record available.
Inventors
- 👤 Clifford A Hampel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:32
CPC Classifications
C; C13; C13B; C13B35/00; C13B35/02; C13B35/04; C07; C07C; C07C51/00; C07C51/42; C07C51/487; C09; C09F; C09F1/00; C09F1/04; C10; C10G; C10G29/00; C10G29/20; C10G29/22; C10G29/24; C10G73/00; C10G73/42; C11; C11B; C11B11/00; C11B11/005; C11B3/00; C11B3/02; C11B3/08; C11C; C11C1/00; C11C1/08; C11D; C11D13/00; C11D13/02; C11D13/06; C13B20/00; C13B20/08; D; D06; D06L; D06L4/00; D06L4/10; D06L4/13; D06L4/20; D06L4/21; D06L4/22; D06L4/24; D06L4/26; D06L4/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1950-11-10 | 1951-05-12 | 1951-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-10 | 1955-05-12 | 1955-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-10 | 1959-05-12 | 1959-11-11 | $7700.00 | Window Closed / Lapsed |