US3397985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive diazotype material and diazonium compounds therefor
Assignee: Van der Grinten NV
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Filing: 1964-12-31
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Granted: 1968-08-20
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Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Hendrickx Andreas Jos Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/27; G; G03; G03C; G03C1/00; G03C1/52; G03C1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2286701A
Cited
GB538869A
Cited
US2456514A
Cited
US2665985A
Cited
US3016298A
Cited
US3155512A
Cited
US3338713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |