US1861330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of sensitive diazo-type layers
Assignee: Chemische Fabriek L Van der Grinten NV
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Filing: 1930-05-12
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Granted: 1932-05-31
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Expires: 1950-05-12
Abstract
No abstract record available.
Inventors
- 👤 Lodewijk Pieter Frans Grinten
- 👤 Karel Jan Joseph Van D Grinten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:22
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; Y; Y10; Y10S; Y10S430/00; Y10S430/136
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) | 1935-05-31 | 1935-11-30 | 1936-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-31 | 1939-11-30 | 1940-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-31 | 1943-11-30 | 1944-05-31 | $7700.00 | Window Closed / Lapsed |