US3490906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing printing plates and developer compositions therefor
Assignee: EIDP Inc
•
Filing: 1964-10-06
•
Granted: 1970-01-20
•
Expires: 1984-10-06
Abstract
No abstract record available.
Inventors
- 👤 Ralph Kingsley Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:09
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03F7/063
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE25885E
Cited
US2607685A
Cited
US2662822A
Cited
GB884457A
Cited
US3083097A
Cited
US3186842A
Cited
US3033765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |