US3389995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-component heat developable diazotypes containing amidine compounds
Assignee: GAF Chemicals Corp
•
Filing: 1964-09-15
•
Granted: 1968-06-25
•
Expires: 1984-09-15
Abstract
No abstract record available.
Inventors
- 👤 Bert E Tripp
- 👤 Walter J Welch
- 👤 Panasik Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61; G03C1/615
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2545423A
Cited
FR1249913A
Cited
US3153592A
Cited
US3271155A
Cited
US3157503A
Cited
US3199982A
Cited
US3255007A
Cited
US3316092A
Cited
US3255011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |