US2969331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making dual-walled oil containing capsules
Assignee: National Cash Register Co
•
Filing: 1958-07-14
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Granted: 1961-01-24
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 C Brynko
- 👤 J A Scarpelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:32
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/44; A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; B; B01; B01J; B01J13/00; B01J13/02; B01J13/06; B01J13/10; B01J13/14; B01J13/18; B01J13/185; B41; B41M; B41M5/00; B41M5/124; B41M5/165; D; D06; D06M; D06M23/00; D06M23/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987; Y10T428/2989
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR MAKING PRESSURE-RUPTURABLE MICROSCOPIC OIL-CONTAINING CAPSULES EACH HAVING AROUND A CENTRAL NUCLEUS OF OIL, A DUAL WALL STRUCTURE CONSISTING OF AN INNER WALL OF SOLID MATERIAL AND AN OUTER WALL OF SOLID MATERIAL ADHERENT TO THE INNER WALL, AND THE WALLS BLE IN THE OIL, DISPERSING THE MONOMER-CONTAINING OIL OF PREPARING AN OIL WITH AT LEAST ONE OIL-SOLUBLE MONOMER MATERIAL DISSOLVED THEREIN, THE MONOMER MATERIAL WHEN POLYMERIZED BEING INSOLUBLE IN THE OIL, PREPARING AN AQUEOUS SOL OF GELLABLE HYDROPHILIC FILM-FORMING COLLOID MATERIAL, DISPERSING THE OIL-MONOMER SOLUTION IN THE SOL AS DROPLETS, INDUCING POLYMERIZATION OF THE MONOMER
Claim 2
Dependent Claim
98 words
A PROCESS FOR MAKING PRESSURE-RUPTURABLE MICROSCOPIC OIL-CONTAINING CAPSULES EACH HAVING AROUND A CENTRAL NUCLEUS OF OIL, A DUAL WALL STRUCTURE CONSISTING OF AN INNER WALL OF SOLID MATERIAL AND AN OUTER WALL OF SOLID MATERIAL ADHERENT TO THE INNER WALL, AND THE WALLS BLE IN THE OIL, DISPERSING THE MONOMER-CONTAINING OIL OF PREPARING AN OIL WITH AT LEAST ONE OIL-SOLUBLE MONOMER MATERIAL DISSOLVED THEREIN, THE MONOMER MATERIAL WHEN POLYMERIZED BEING INSOLUBLE IN THE OIL, PREPARING AN AQUEOUS SOL OF GELLABLE HYDROPHILIC FILM-FORMING COLLOID MATERIAL, DISPERSING THE OIL-MONOMER SOLUTION IN THE SOL AS DROPLETS, INDUCING POLYMERIZATION OF THE MONOMER
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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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |