Patent US3592677A successfully refreshed from Google Patents.
US3592677A
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US
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Pressure sensitive recording materials
Assignee: Fujifilm Holdings Corp
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Filing: 1968-02-07
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Granted: 1971-07-13
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Expires: 1988-02-07
Abstract
Abstract A PRESSURE SENSITIVE RECORDING SYSTEM COMPRISING TWO SUPPORTED LAYERS, ONE OF WHICH LAYERS CONTAINS AN ORGANOVANADIUM COMPOUND AND THE OTHER OF WHICH LAYERS CONTAINS AN AROMATIC HYDROXY COMPOUND CAPABLE OF A COLORFORMING REACTION WITH THE ORGANO-VANADIUM COMPOUND, AT LEAST ONE OF SAID COMPOUNDS BEING PRESENT IN THE FORM OF A SOLUTION ENCAPSULATED IN PRESSURE-RUPTURABLE MICROCAPSULES. THE ORGANO-VANADIUM COMPOUNDS EMPLOYED COMPRISE THE REACTION PRODUCT OF AN INORGANIC VANADIUM COMPOUND WITH PARTICULAR NITROGEN-CONTAINING COMPOUNDS CHARACTERIZED BY THE PRESENCE OF A HYDROCARBON GROUP HAVING 6 TO 21 CARBON ATOMS.
Inventors
- 👤 Masayoshi Tsuboi
- 👤 Yoshiaki Suzuki
- 👤 Fumiko Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:14
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B01; B01J; B01J13/00; B01J13/02; B01J13/025; B41M5/136; B41M5/1363; C; C07; C07F; C07F9/00; C07F9/005; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |