US2813792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material
Assignee: Keuffel and Esser Co
•
Filing: 1953-03-19
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Granted: 1957-11-19
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Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
- 👤 Neugebauer Wilhelm
- 👤 Bottger Hans
- 👤 Endermann Fritz
- 👤 Schafer Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
PHOTOPRINTING MATAERIAL COMPRISING AN ABSORBENT BASE COATED WITH A CARRIER LAYER CONSISTING ESENTIALLY OF PARTICLES FORMED OF A SILICATE OF A METAL OF THE SECOND AND THIRD GROUPS OF THE PERIODIC SYSTEM, SAID CARRIER LAYER BEING SENSITIZED WITH A PHOTOSENSITIVE SOLUTION COMPRISING A LIGHT SENSITIVE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAZO COMPOUNDS AND FERRIC SALTS.
Claim 2
Dependent Claim
57 words
PHOTOPRINTING MATAERIAL COMPRISING AN ABSORBENT BASE COATED WITH A CARRIER LAYER CONSISTING ESENTIALLY OF PARTICLES FORMED OF A SILICATE OF A METAL OF THE SECOND AND THIRD GROUPS OF THE PERIODIC SYSTEM, SAID CARRIER LAYER BEING SENSITIZED WITH A PHOTOSENSITIVE SOLUTION COMPRISING A LIGHT SENSITIVE COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAZO COMPOUNDS AND FERRIC SALTS.
References Cited (Backward Citations)
US2178771A
Cited
US2626867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |