Patent US3039872A successfully refreshed from Google Patents.
US3039872A
Expired / Lapsed
US
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Material for diazotype processes
Assignee: Lichtdrukpapierfabriek de Atlas NV
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Filing: 1959-07-16
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Granted: 1962-06-19
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Expires: 1979-07-16
Abstract
No abstract record available.
Inventors
- 👤 Boer Henri Gerard Jean De
- 👤 Frahm Elias Detlev Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:15
CPC Classifications
C; C08; C08B; C08B15/00; C08B15/05; C08B15/06; C08G; C08G69/00; C08G69/48; C09; C09B; C09B43/00; C09B43/12; C09B43/136; C09B43/16; G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A COUPLING COMPONENT FOR THE PREPARATION OF DIAZOTYPE PRINTS AND HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A COUPLING COMPONENT FOR THE PREPARATION OF DIAZOTYPE PRINTS AND HAVING THE FORMULA
References Cited (Backward Citations)
US1886480A
Cited
US1896892A
Cited
US2025660A
Cited
US2241321A
Cited
US2307399A
Cited
GB785222A
Cited
GB785120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |