US2092076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo dyestuffs and their production
Assignee: Imperial Chemical Industries Ltd
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Filing: 1935-07-01
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Granted: 1937-09-07
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Expires: 1955-07-01
Abstract
No abstract record available.
Inventors
- 👤 Knight Arthur Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:41
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/78; C09B62/82; C09B62/83; C09B31/00; C09B31/02; C09B31/04; C09B31/043; C09B31/047
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) | 1940-09-06 | 1941-03-08 | 1941-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-06 | 1945-03-08 | 1945-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-06 | 1949-03-08 | 1949-09-07 | $7700.00 | Window Closed / Lapsed |