Patent US2595916A successfully refreshed from Google Patents.
US2595916A
Expired / Lapsed
US
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Light sensitive positive printing diazotype paper having a calendered surface
Assignee: Chemische Fabriek L Van der Grinten NV
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Filing: 1948-04-20
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Granted: 1952-05-06
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Expires: 1968-04-20
Abstract
No abstract record available.
Inventors
- 👤 Bartels Wilhelmus Hub Gerardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:49
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE PROCESS OF MANUFACTURING LIGHT-SENSITIVE POSITIVE PRINTING DIAZOTYPE PAPER, WHICH COMPRISED APPLYING A SENSITIZING SOLUTION CONTAINING A DIAZO COMPOUND TO BASE PAPER TO FORM DIAZOTYPE PAPER HAVING A SENSITIZED LAYER FREE OF DEVELOPING POWDER, AND THEREAFTER, WITHOUT HAVING APPLIED DEVELOPING POWDER TO SAID LAYER, CALENDERING AND DRYING SAID DIAZOTYPE PAPER.
Claim 2
Dependent Claim
50 words
THE PROCESS OF MANUFACTURING LIGHT-SENSITIVE POSITIVE PRINTING DIAZOTYPE PAPER, WHICH COMPRISED APPLYING A SENSITIZING SOLUTION CONTAINING A DIAZO COMPOUND TO BASE PAPER TO FORM DIAZOTYPE PAPER HAVING A SENSITIZED LAYER FREE OF DEVELOPING POWDER, AND THEREAFTER, WITHOUT HAVING APPLIED DEVELOPING POWDER TO SAID LAYER, CALENDERING AND DRYING SAID DIAZOTYPE PAPER.
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) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |