Patent US2800458A successfully refreshed from Google Patents.
US2800458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-containing microscopic capsules and method of making them
Assignee: NCR Voyix Corp
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Filing: 1953-06-30
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Granted: 1957-07-23
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Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 Barrett K Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:30
CPC Classifications
B; B41; B41J; B41J13/00; B41J13/10; A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5089; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/08; B01J13/10; B41M; B41M5/00; B41M5/124; B41M5/165; Y; Y10; Y10S; Y10S101/00; Y10S101/29; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF MAKING OIL-CONTAINING MICROSCOPIC CAPSULES OF GELLABLE HYDROPHILIC MATERIAL, INCLUDING THE STEPS OF MAKING AN AQUEOUS OF A GELLABLE HYDROPHILIC COLLOID MATERIAL; EMUSLSIFYING THEREIN AN OIL; ADDING AND STIRRING INTO THE EMULSION A PREVIOUSLY DETERMINDED AQUEOUS COACERVATE SALT SOLUTION, OF SUCH CONCENTERATION AND IN SUCH AMOUNT AS TO BRING THE EMULSION INTO THE COACERVATE REGION DEFINED BY THE OCCURRENCE OF A CLOUDING EFFECT WHEN THE AQUEOUS SALT SOLUTION IS ADDED TO THE COLLOID SOLUTION IN THE ABSENCE OF OIL, ALL OF THE FOREGOING STEPS BEING CARRIED OUT AT A TEMPERATURE ABOVE THE GELATION POINT OF THE COLLOID MATERIAL, WHEREBY THE COLLOID MATERIAL DEPOSITS AROUND EA CH OIL DROPLET BY COACERVATE FORCES, ENCAPSULATING EACH OF THEM; AND GELLING THE COLLOID MATERIAL BY COOLING.
Claim 2
Independent Claim
124 words
THE METHOD OF MAKING OIL-CONTAINING MICROSCOPIC CAPSULES OF GELLABLE HYDROPHILIC MATERIAL, INCLUDING THE STEPS OF MAKING AN AQUEOUS OF A GELLABLE HYDROPHILIC COLLOID MATERIAL; EMUSLSIFYING THEREIN AN OIL; ADDING AND STIRRING INTO THE EMULSION A PREVIOUSLY DETERMINDED AQUEOUS COACERVATE SALT SOLUTION, OF SUCH CONCENTERATION AND IN SUCH AMOUNT AS TO BRING THE EMULSION INTO THE COACERVATE REGION DEFINED BY THE OCCURRENCE OF A CLOUDING EFFECT WHEN THE AQUEOUS SALT SOLUTION IS ADDED TO THE COLLOID SOLUTION IN THE ABSENCE OF OIL, ALL OF THE FOREGOING STEPS BEING CARRIED OUT AT A TEMPERATURE ABOVE THE GELATION POINT OF THE COLLOID MATERIAL, WHEREBY THE COLLOID MATERIAL DEPOSITS AROUND EA CH OIL DROPLET BY COACERVATE FORCES, ENCAPSULATING EACH OF THEM; AND GELLING THE COLLOID MATERIAL BY COOLING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |