Patent US3090574A successfully refreshed from Google Patents.
Patent US3121012A successfully refreshed from Google Patents.
US3121012A
Expired / Lapsed
US
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Light sensitive triphenylmethane leucocyanide compositions
Assignee: Miehle Goss Dexter Inc
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Filing: 1960-02-08
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Granted: 1964-02-11
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Expires: 1980-02-08
Abstract
No abstract record available.
Inventors
- 👤 Meyer S Agruss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675; G03C1/72; G03C1/73; G03C1/732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PHOTOSENSITIVE COMPOSITION, SENSITIVE TO ELECTROMAGNETIC RADIATION LOWER THAN 4000 ANGSTROIM UNITS, COMPRISING A LEUCOCYANIDE OF A TRIPHENYLMETHANE DYE, AN ACTIVATOR THERFOR, AND A CHEMICAL COMPOUND WHICH IS INEFFECTIVE TO BRING ABOUT COLORATION OF THE TRIPHENYLMETHANE DYE BUT WHICH, UNDER THE INFLUENCE OF SAID ELECTROMAGNETIC RADIATION, IS CONVERTED TO A DIFFERENT CHEMICAL COMPOUND HAVING A GREATER ADIDITY AND SUFFICIENT TO ENHANCE THE DEVELOPMENT OF COLORATION OF SAID TRIPHENYLMETHANE DYE.
Claim 2
Dependent Claim
69 words
A PHOTOSENSITIVE COMPOSITION, SENSITIVE TO ELECTROMAGNETIC RADIATION LOWER THAN 4000 ANGSTROIM UNITS, COMPRISING A LEUCOCYANIDE OF A TRIPHENYLMETHANE DYE, AN ACTIVATOR THERFOR, AND A CHEMICAL COMPOUND WHICH IS INEFFECTIVE TO BRING ABOUT COLORATION OF THE TRIPHENYLMETHANE DYE BUT WHICH, UNDER THE INFLUENCE OF SAID ELECTROMAGNETIC RADIATION, IS CONVERTED TO A DIFFERENT CHEMICAL COMPOUND HAVING A GREATER ADIDITY AND SUFFICIENT TO ENHANCE THE DEVELOPMENT OF COLORATION OF SAID TRIPHENYLMETHANE DYE.
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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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |