US2665985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive diazo compounds and photoprint material prepared therefrom
Assignee: Keuffel and Esser Co
•
Filing: 1950-10-20
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Granted: 1954-01-12
•
Expires: 1970-10-20
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
THE LIGHT-SENSITIVE DIAZONIUM SALTS OF THE AMINO COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
12 words
THE LIGHT-SENSITIVE DIAZONIUM SALTS OF THE AMINO COMPOUNDS HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |