US2378283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment dyestuffs and process for the improvement of the tinctorial properties of pigments
Assignee: SWISS FIRM OF SOC OF CHEMICAL
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Filing: 1943-02-04
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Granted: 1945-06-12
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Expires: 1963-02-04
Abstract
No abstract record available.
Inventors
- 👤 Bucher Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0002
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) | 1948-06-11 | 1948-12-11 | 1949-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-11 | 1952-12-11 | 1953-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-11 | 1956-12-11 | 1957-06-12 | $7700.00 | Window Closed / Lapsed |