US1348990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering protein and phosphates of calcium and magnesium from acid waste waters
Assignee: Individual
•
Filing: 1919-03-10
•
Granted: 1920-08-10
•
Expires: 1939-03-10
Abstract
No abstract record available.
Inventors
- 👤 Giesecke Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:06
CPC Classifications
C; C05; C05F; C05F7/00; C05D; C05D3/00; C05F5/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20
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) | 1923-08-10 | 1924-02-09 | 1924-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-08-10 | 1928-02-09 | 1928-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-08-10 | 1932-02-09 | 1932-08-10 | $7700.00 | Window Closed / Lapsed |