Patent US1218638A successfully refreshed from Google Patents.
US1218638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the utilization of waste sulphite liquor.
Assignee: Individual
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Filing: 1915-10-30
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Granted: 1917-03-13
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Expires: 1935-10-30
Abstract
No abstract record available.
Inventors
- 👤 Adolph D Fest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:31
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; C; C12; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/06; C12P7/08; C12P7/12
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) | 1920-03-12 | 1920-09-11 | 1921-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-03-12 | 1924-09-11 | 1925-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-03-12 | 1928-09-11 | 1929-03-13 | $7700.00 | Window Closed / Lapsed |