Patent US3554781A successfully refreshed from Google Patents.
US3554781A
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US
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Method of producing pressure-sensitive recording papers
Assignee: Fujifilm Holdings Corp
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Filing: 1968-01-24
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Granted: 1971-01-12
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Expires: 1988-01-24
Abstract
Abstract A SINGLE-SHEET PRESSURE-SENSITIVE RECORDING MATERIAL IS PRODUCED BY APPLYING TO A SUBSTRATE AN ELECTRON-ACCEPTIVE ADSORBENT AND MICROCAPSULES FORMED BY COACERVATING A HYDROPHILIC MATERIAL ROUND COLORLESS ELECTRON DONORS. BY INCORPORATING 5-15 PARTS BY WEIGHT, BASED ON THE WEIGHT OF THE MATERIALS USED TO FORM THE WALL OF THE MICROCAPSULES OF A WATER-SOLUBLE ALKYD RESIN, A WATERDISPERSIBLE METAL SOAP, A WATER-DISPERSIBLE PARAFFIN OR AN AQUEOUS EMULSION OF A PARAFFIN WAX AND ROSIN INTO THE COMPOSITION USED TO COACERVATE THE MICROCAPSULES PRIOR TO APPLICATION ONTO THE SUBSTRATE AN IMPROVED PRESSURE SENSITIVE RECORDING MATERIAL IS OBTAINED.
Inventors
- 👤 Hiroharu Matsukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:02
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B01; B01J; B01J13/00; B01J13/02; B01J13/025; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |