US3754062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for encapsulation of hydrophobic materials utilizing urethane elastomers
Assignee: Individual
•
Filing: 1971-03-19
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Granted: 1973-08-21
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Expires: 1991-03-19
Abstract
Abstract A METHOD IS DISCLOSED FOR ENCAPSULTING HYDROPHOBIC MATERIALS BY APPLYING AN ADMIXTURE OF URETHANE ELASTOMER AND EPICHLOROHYDRIN IN DROPLETS TO A POLYAMINE SOLUTION SO THAT POLYMERIZATION PROCEEDS AT THE INTERFACE BETWEEN THE HYDROPHOBIC LIQUID PHASE AND THE AQUEOUS PHASE TO DEPOSIT A CAPSULAR FILM ON HYDROPHOBIC LIQUID DROPLETS.
Inventors
- 👤 T Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:45
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2618; B; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/14; B01J13/16; C08G18/00; C08G18/06; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0861; C08G18/0866
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 |