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US1597727A
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Assignee: IG Farbenindustrie AG
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Filing: 1923-10-19
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Granted: 1926-08-31
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Expires: 1943-10-19
Abstract
No abstract record available.
Inventors
- 👤 Sperati Mariano De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:56
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7642; Y; Y10; Y10S; Y10S430/00; Y10S430/151
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) | 1929-08-30 | 1930-03-01 | 1930-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-08-30 | 1934-03-01 | 1934-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-08-30 | 1938-03-01 | 1938-08-31 | $7700.00 | Window Closed / Lapsed |