US3226233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive compositions containing leucocyanides of triphenylmethane dyes
Assignee: Miehle Goss Dexter Inc
•
Filing: 1960-06-13
•
Granted: 1965-12-28
•
Expires: 1980-06-13
Abstract
No abstract record available.
Inventors
- 👤 Meyer S Agruss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
PHOTOSENITIVE SHEET MATERIAL COMPRISING SHEET STOCK CARRYING A LEUCOCYANIDE OF A TRIPHENYLMETHANE DYE, AN ACTIVATOR FOR SAID LEUCOCYANIDE WHICH RENDERS SAID LEUCOCYANIDE SENSITIVE TO ULTRA VIOLET LIGHT, AND AN INORGANIC METALLIC SALT PHOSPHOR, SAID PHOSPHOR BEING SELECTED FROM THAT GROUP OF PHOSPHORS WHICH, WHEN SUBJECTED TO ULTRAVIOLET LIGHT OF WAVE LENGTH BELOW 4000 ANGSTROM UNITS, EMITS LIGHT HAVING A DIFFERENT AND GREATER WAVE LENGTH MAINLY IN THE RANGE UP TO 4000 ANGSTROM UNITS, SAID PHOSPHOR BEING PRESENT IN AN AMOUNT OF THE ORDER OF 1 TO 5 MG. PER SQUARE INCH OF SAID SHEET MATERIAL.
References Cited (Backward Citations)
GB163903A
Cited
US2168225A
Cited
US2239718A
Cited
GB557102A
Cited
US2528496A
Cited
US2511462A
Cited
GB672803A
Cited
US2676887A
Cited
US2747997A
Cited
US2895892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |