US3123473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive tgiphenyl methane
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/732; G03C1/675
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PHOTOSENSITIVE COMPOSITION WHICH COMPRISES A SUBSTANTIALLY COLORLESS QUATERNARY AMMONIUM TRIPHENYLMETHANE CARBINOL AND, AS AN ACTIVATOR FOR SAID CARBINOL, A CHEMICAL COMPOUND WHICH IS INEFFECTIVE TO BRING ABOUT COLORATION OF SAID CARBINOL BUT WHICH, UNDER THE INFLUENCE OF ELECTROMAGNETIC RADIATION IN THE WAVE LENGTH RANGE UP TO 4000 ANGSTROM UNITS, IS CONVERTED TO A DIFFERENT CHEMICAL COMPOUND HAVING A GREATER ACIDITY AND SUFFICIENT TO ENHANCE COLORATION OF SAID CARBINOL, SAID CARBINOL BEING CONVERTIBLE, UNDER THE INFLUENCE OF SUCH ELECROMAGNETIC RADIATION, TO A COLORED DYE, SAID ACTIVATOR BEING USED IN AMOUNT SUFFICIENT TO ENHANCE THE COLOR OF SAID CARBINOL UNDER THE INFLUENCE OF SAID RADIATION.
Claim 2
Dependent Claim
104 words
A PHOTOSENSITIVE COMPOSITION WHICH COMPRISES A SUBSTANTIALLY COLORLESS QUATERNARY AMMONIUM TRIPHENYLMETHANE CARBINOL AND, AS AN ACTIVATOR FOR SAID CARBINOL, A CHEMICAL COMPOUND WHICH IS INEFFECTIVE TO BRING ABOUT COLORATION OF SAID CARBINOL BUT WHICH, UNDER THE INFLUENCE OF ELECTROMAGNETIC RADIATION IN THE WAVE LENGTH RANGE UP TO 4000 ANGSTROM UNITS, IS CONVERTED TO A DIFFERENT CHEMICAL COMPOUND HAVING A GREATER ACIDITY AND SUFFICIENT TO ENHANCE COLORATION OF SAID CARBINOL, SAID CARBINOL BEING CONVERTIBLE, UNDER THE INFLUENCE OF SUCH ELECROMAGNETIC RADIATION, TO A COLORED DYE, SAID ACTIVATOR BEING USED IN AMOUNT SUFFICIENT TO ENHANCE THE COLOR OF SAID CARBINOL UNDER THE INFLUENCE OF SAID RADIATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |