Patent US3121633A successfully refreshed from Google Patents.
US3121633A
Expired / Lapsed
US
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Process of making print-out images with cyanine dye bases and styryl dye bases
Assignee: Horizons Inc
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Filing: 1962-07-25
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Granted: 1964-02-18
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Expires: 1982-07-25
Abstract
No abstract record available.
Inventors
- 👤 Robert H Sprague
- 👤 Peter W Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/84; C07C205/00; C07C205/45; C07C45/00; C07C45/61; C07C45/63; C07C49/80; C07C49/813; G; G03; G03C; G03C1/00; G03C1/675
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
34 words
A METHOD OF PRODUCING A VISIBLE IMAGE WHICH COMPRISES: PREPARING A MEMBER INCLUDING A THIN LAYER CONTAINING A MIXTURE CONSISTING ESSENTIALLY OF A LEUCO BASE OF A TRIPHENYLMETHANE DYE REPRESENTED BY THE GENERAL FORMULA
References Cited (Backward Citations)
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US2718495A
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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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |