US1131516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Greenish-blue dyes of the anthraquinone series.
Assignee: Agfa Gevaert NV
•
Filing: 1914-07-01
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Granted: 1915-03-09
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Expires: 1934-07-01
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Herzberg
- 👤 Gerhard Hoppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34; C09B1/343
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) | 1918-03-08 | 1918-09-07 | 1919-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-03-08 | 1922-09-07 | 1923-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-03-08 | 1926-09-07 | 1927-03-09 | $7700.00 | Window Closed / Lapsed |