US3753922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of microcapsules
Assignee: Japan Exlan Co Ltd
•
Filing: 1971-10-01
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Granted: 1973-08-21
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Expires: 1991-10-01
Abstract
Abstract MICROCAPSULES ARE FORMED BY DISPERSING A HYDROPHOBIC MATERIAL, SUCH AS AN INK, IN A AQUEOUS SOLUTION OF A THIOCYANATE CONTAINING A GELLABLE HYDROPHILLIC COLLOID MATERIAL, SUCH AS A PROTEIN DISSOLVED THEREIN. THE USE OF THE THIOCYANATE HARDENING OF THE CAPSULES AND PREVENTS GENERATION OF BUBBLES AND COHESION OF THE MICROCAPSULES.
Inventors
- 👤 Y Shimosaka
- 👤 H Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:00
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987; Y10T428/2989
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |