US3582495A
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Treatment of hydrophilic polymeric capsule wall material with vanadium compounds
Assignee: NCR Voyix Corp
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Filing: 1968-01-29
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Granted: 1971-06-01
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Expires: 1988-01-29
Abstract
Abstract A PROCESS IS PROVIDED FOR MANUFACTURING NOVEL, MINUTE, CAPSULES, EN MASSE, WHEREIN EXISTING CAPSULES HAVING WALLS OF WATER-SWELLABLE, HYDROPHILIC, POLYMERIC MATERIAL ARE FURTHER TREATED BY URANIUM- OR VANADIUM-CONTAINING IONS IN AN AQUEOUS LIQUID SUPPORTING VEHICLE. CAPSULES PRODUCED BY PRACTICE OF THIS PROCESS HAVE WALLS WHICH EXHIBIT DECREASED SWELLING IN WATER AND DECREASED SENSITIVITY TO HIGH RELATIVE HUMIDITY.
Inventors
- 👤 Donald Day Emrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/206; 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)
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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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |