US2980535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive layers of synthetic materials
Assignee: Feldmuehle Papier und Zellstoffwerke AG
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Filing: 1958-10-06
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Granted: 1961-04-18
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Christa B E Schroeter
- 👤 Schroeter Iegal Representa Udo
- 👤 Schroeter Ivo
- 👤 Schroeter Jonke Kai
- 👤 Schroeter Silvelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:05
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/121; Y10S430/124; Y10S430/126; Y10S522/00; Y10S522/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, SAID SUPPORT HAVING TWO OPPOSING SURFACES, ONE OF SAID SURFACES BEING COATED WITH A LAYER OF A MATERIAL CONSISTING OF AN ACETAL OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL ALCOHOL, CELLULOSE, AND PARTIALLY ACETYLATED POLYVINYL ALCOHOL AND CELLULOSE, WITH A MONOFORMYL DERIVATIVE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTHRACENE, ACRIDINE, BENZOPYRENE, PHENAZINE, PHENANTHROPHENAZINE, BENZANTHRENE, AND 2,9,10-TRICHLORO ANTHRACENE, SAID MATERIAL BEING THE SOLE LIGHT-SENSITIVE COMPONENT OF SAID ELEMENT, SAID MATERIAL BEING REMOVABLE FROM SAID SUPPORT WITH AN ORGANIC SOLVENT.
Claim 2
Dependent Claim
91 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, SAID SUPPORT HAVING TWO OPPOSING SURFACES, ONE OF SAID SURFACES BEING COATED WITH A LAYER OF A MATERIAL CONSISTING OF AN ACETAL OF A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL ALCOHOL, CELLULOSE, AND PARTIALLY ACETYLATED POLYVINYL ALCOHOL AND CELLULOSE, WITH A MONOFORMYL DERIVATIVE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTHRACENE, ACRIDINE, BENZOPYRENE, PHENAZINE, PHENANTHROPHENAZINE, BENZANTHRENE, AND 2,9,10-TRICHLORO ANTHRACENE, SAID MATERIAL BEING THE SOLE LIGHT-SENSITIVE COMPONENT OF SAID ELEMENT, SAID MATERIAL BEING REMOVABLE FROM SAID SUPPORT WITH AN ORGANIC SOLVENT.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |