US2525015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methine dyestuffs
Assignee: Gevaert Photo Producten NV
•
Filing: 1947-06-10
•
Granted: 1950-10-10
•
Expires: 1967-06-10
Abstract
No abstract record available.
Inventors
- 👤 Beersmans Jules Edmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:32
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A DYESTUFF CORRESPONDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
A DYESTUFF CORRESPONDING TO THE GENERAL FORMULA:
References Cited (Backward Citations)
US2185798A
Cited
US2191810A
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US2153169A
Cited
US2312068A
Cited
US2226156A
Cited
US2345094A
Cited
US2393745A
Cited
US2415927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |