US898390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of concentrating nitrosulfuric waste acid.
Assignee: Firm Of Salpeter-Saeure Industrie-Gesellschaft G M B H
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Filing: 1907-07-29
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Granted: 1908-09-08
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Expires: 1927-07-29
Abstract
No abstract record available.
Inventors
- 👤 Harry Pauling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:54
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/24; C01B21/26
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) | 1911-09-08 | 1912-03-09 | 1912-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-09-08 | 1916-03-09 | 1916-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-09-08 | 1920-03-09 | 1920-09-08 | $7700.00 | Window Closed / Lapsed |