US2160391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching process and composition
Assignee: EIDP Inc
•
Filing: 1936-02-24
•
Granted: 1939-05-30
•
Expires: 1956-02-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Reichert
- 👤 Wilbie S Hinegardner
- 👤 Howard L Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:38
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3947; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-05-29 | 1942-11-28 | 1943-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-29 | 1946-11-28 | 1947-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-29 | 1950-11-28 | 1951-05-30 | $7700.00 | Window Closed / Lapsed |