Patent US1551147A successfully refreshed from Google Patents.
US1551147A
Expired / Lapsed
US
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Quinonimide dyestuffs and the process of making the same
Assignee: Individual
•
Filing: 1922-04-04
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Granted: 1925-08-25
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Expires: 1942-04-04
Abstract
No abstract record available.
Inventors
- 👤 Green Arthur George
- 👤 Saunders Kenneth Herbert
- 👤 Adams Ernest Bryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:42
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/38; C07D241/46; C09; C09B; C09B17/00; C09B17/02; C09B19/00; C09B21/00
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) | 1928-08-24 | 1929-02-23 | 1929-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-08-24 | 1933-02-23 | 1933-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-08-24 | 1937-02-23 | 1937-08-25 | $7700.00 | Window Closed / Lapsed |