US3201241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer for diazo-type printing plates and the use thereof
Assignee: Azoplate Corp
•
Filing: 1961-07-11
•
Granted: 1965-08-17
•
Expires: 1981-07-11
Abstract
No abstract record available.
Inventors
- 👤 Munder Johannes
- 👤 Heiss Hans
- 👤 Fritz Gerhard
- 👤 Osswald Dieter
- 👤 Heck Hans Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:00
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/32; G03F7/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A DEVELOPER FOR PLANOGRAPHIC PRINTING PLATES OF THE TYPE INCLUDING A LIGHT-SENSITIVE DIAZO COMPOUND COMPRISING AN AQUEOUS SOLUTION OF AT LEAST OF ABOUT 0.3 TO 5 PERCENT BY WEIGHT ONE ALKALINE-ACTING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL COMPOUNDS, ALKYLAMINES AND HYDROXYL-ALKYLAMINES AND ABOUT 0.001 TO 0.05 PERCENT BY WEIGHT OF AT LEAST ONE COMPOUND OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF BERYLLIUM, MERCURY, CALCIUM, STRONTIUM, BARIUM, BISMUTH, AND LANTHANUM, CAPABLE OF CATION FORMATION IN AN AQUEOUS MEDIUM.
Claim 2
Dependent Claim
82 words
A DEVELOPER FOR PLANOGRAPHIC PRINTING PLATES OF THE TYPE INCLUDING A LIGHT-SENSITIVE DIAZO COMPOUND COMPRISING AN AQUEOUS SOLUTION OF AT LEAST OF ABOUT 0.3 TO 5 PERCENT BY WEIGHT ONE ALKALINE-ACTING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL COMPOUNDS, ALKYLAMINES AND HYDROXYL-ALKYLAMINES AND ABOUT 0.001 TO 0.05 PERCENT BY WEIGHT OF AT LEAST ONE COMPOUND OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF BERYLLIUM, MERCURY, CALCIUM, STRONTIUM, BARIUM, BISMUTH, AND LANTHANUM, CAPABLE OF CATION FORMATION IN AN AQUEOUS MEDIUM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |