Patent US3687865A successfully refreshed from Google Patents.
US3687865A
Expired / Lapsed
US
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Oil containing microcapsules and method for their production
Assignee: Fujifilm Holdings Corp
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Filing: 1969-08-04
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Granted: 1972-08-29
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Expires: 1989-08-04
Abstract
Abstract METHOD OF PRODUCING MICROCAPSULES CONTAINING HYDROPHOBIC OILY LIQUID, WHICH COMPRISES, IN PRODUCING MICROCAPSULES BY COMPLEX COACERVATION, USING GELATIN, AS AT LEAST ONE HYDROPHILIC COLLOID, ADDING AN AQUEOUS SOLUTION OF SHOCK PREVENTING AGENT AT A TEMPERATURE LOWER THAN THE GELLING POINT OF GELATIN IN ORDER TO PREVENT A RISE IN VISCOSITY DUE TO REACTION OF GELATIN AND ALDEPHYDE DURING HARDENING PRETREATMENT AND RAPIDLY ACCOMPLISHING HARDENING PRETREATMENT.
Inventors
- 👤 Shizuo Katayama
- 👤 Hiroharu Matsukawa
- 👤 Masaya Yamamoto
- 👤 Junichi Matsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/10; B41; B41M; B41M5/00; B41M5/124; B41M5/165; 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)
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |