Patent US3255010A successfully refreshed from Google Patents.
US3255010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-component diazotype material
Assignee: Keuffel and Esser Co
•
Filing: 1962-05-03
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Granted: 1966-06-07
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Expires: 1982-05-03
Abstract
No abstract record available.
Inventors
- 👤 Sus Oskar
- 👤 Dotsch Hans-Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A DIAZOTYPE MATERIAL, COMPRISING A SUPPORT, AND A LIGHT-SENSITIVE COATING ON SAID SUPPORT, SAID LIGHT SENSITIVE COATING COMPRISING A COUPLER, AND A DIAZO COMPONENT FOR COUPLING WITH SAID COUPLER FOR FORMING A VISIBLE COLOR IN THE PRESENCE OF AN ALKALI ENVIRONMENT, SAID COUPLER HAVING THE FORMULA
Claim 2
Dependent Claim
46 words
A DIAZOTYPE MATERIAL, COMPRISING A SUPPORT, AND A LIGHT-SENSITIVE COATING ON SAID SUPPORT, SAID LIGHT SENSITIVE COATING COMPRISING A COUPLER, AND A DIAZO COMPONENT FOR COUPLING WITH SAID COUPLER FOR FORMING A VISIBLE COLOR IN THE PRESENCE OF AN ALKALI ENVIRONMENT, SAID COUPLER HAVING THE FORMULA
References Cited (Backward Citations)
US2875205A
Cited
US2551570A
Cited
US2650925A
Cited
US2819268A
Cited
US2946684A
Cited
US3064049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |