Patent US3560229A successfully refreshed from Google Patents.
US3560229A
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US
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Colorforming compositions and methods for preparing and controlling same
Assignee: Unisys Corp
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Filing: 1969-05-15
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Granted: 1971-02-02
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Expires: 1989-05-15
Abstract
Abstract THE PRESENT INVENTION RELATES TO NOVEL XXXXXXXXXX COMPOSITIONS. IN PARTICULAR, THE INVENTION RELATES TO COLORFORMING COMPOSITIONS INCLUDING COLORLESS OR LIGHT COLORED CHROMOGENOUS LACTONE COMPOUNDS AND REACTIVE PHENOLIC COMPOUNDS, AND METHODS FOR PREPARING THE COMPOSITIONS AND FOR THE CONTROL OF THE APPEARANCE AND STABILITY OF COLOR IN THE PRESENCE OF HEAT OR WATER BY THE INCLUSION OF CERTAIN ORGANIC SOLVENTS IN THE COLORFORMING COMPOSITION.
Inventors
- 👤 Norman W Farnham
- 👤 Earl J Gosnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:14
CPC Classifications
C; C09; C09B; C09B11/00; C09B11/04; C09B11/10; C09B11/24; B; B41; B41M; B41M5/00; B41M5/025; B41M5/0253; B41M5/124; B41M5/132; B41M5/155; B41M5/26; B41M5/30; B41M5/323; B41M5/327; B41M5/333; B41M5/3333; B41M5/3335; B41M5/3336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |