US3202731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming free flowing particles, containing a biologically valuable substance
Assignee: US Philips Corp
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Filing: 1961-04-03
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Granted: 1965-08-24
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Grevenstuk Anton Bernard
- 👤 Hoogesteger Francois J Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:16
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A23; A23K; A23K40/00; A23K40/10; A23L; A23L33/00; A23L33/10; A23L33/15; A23L33/155; A23P; A23P10/00; A23P10/40; A23P10/43; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5052; A61K9/5057; A61K9/5089; B; B01; B01J; B01J13/00; B01J13/02; B01J13/04; B01J2/00; B01J2/02; B01J2/04; B01J8/00; B01J8/08; B01J8/10; Y; Y10; Y10S; Y10S159/00; Y10S159/03; Y10S159/11; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2989
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A METHOD OF MANUFACTURING SOLID, AIR-STABLE FREE FLOWING, SPHERICAL PARTICLES EACH PARTICLE HAVING A CENTER PORTION CONTAINING AN AIR-OXIDIZABLE SUBSTANCE AND AT LEAST ONE ANTIOXIDANT AND AN OUTER PORTION CONTAINING A FILM-FORMING COLLOID AND A CARBOHYDRATE, SAID METHOD COMPRISING THE STEPS, FORMING IN WARM WATER AN AQUEOUS EMULSION OF SAID ABOVE-MENTIONED INGREDIENTS IN A CONCENTRATION SUCH THAT SAID MIXTURE SLOWLY HARDENS AT ROOM TEMPERATURE, ATOMIZING SAID AQUEOUS EMULSION AT A TEMPERATURE BETWEEN ABOUT 50*C. AND 100*C. INTO A GAS HAVING A TEMPERATURE LOW ENOUGH TO CAUSE THE RESULTANT FLUID DROPS TO SLOWLY HARDEN, FORCING THE RESULTANT DROPS TO IMPINGE UPON A FLUIDIZED BED CONSISTING INITIALLY OF A NON-WATER ABSORBENT POWDERED LUBRICANT POWDER, SOLIDIFIED SPHERICAL PARTICLES FORMED FROM SAID FLUID DROPS AND SOLIDIFYING DROPS FORMED FROM SAID FLUID DROPS, SAID BED KEPT IN THE FLUIDIZED STATE BY MEANS OF AN UPWARDLY DIRECTED GAS, SAID GAS HAVING A TEMPERATURE SUFFICIENTLY LOW TO CAUSE THE FLUID DROPS TO SOLIDIFY, WITHDRAWING THE RESULTANT SOLID SPHERICAL PARTICALS FROM THE FLUIDIZED BED, REMOVING THE LUBRICANT FROM SAID PARTICLES AND DRYING SAID PARTICLES.
Claim 2
Independent Claim
176 words
A METHOD OF MANUFACTURING SOLID, AIR-STABLE FREE FLOWING, SPHERICAL PARTICLES EACH PARTICLE HAVING A CENTER PORTION CONTAINING AN AIR-OXIDIZABLE SUBSTANCE AND AT LEAST ONE ANTIOXIDANT AND AN OUTER PORTION CONTAINING A FILM-FORMING COLLOID AND A CARBOHYDRATE, SAID METHOD COMPRISING THE STEPS, FORMING IN WARM WATER AN AQUEOUS EMULSION OF SAID ABOVE-MENTIONED INGREDIENTS IN A CONCENTRATION SUCH THAT SAID MIXTURE SLOWLY HARDENS AT ROOM TEMPERATURE, ATOMIZING SAID AQUEOUS EMULSION AT A TEMPERATURE BETWEEN ABOUT 50*C. AND 100*C. INTO A GAS HAVING A TEMPERATURE LOW ENOUGH TO CAUSE THE RESULTANT FLUID DROPS TO SLOWLY HARDEN, FORCING THE RESULTANT DROPS TO IMPINGE UPON A FLUIDIZED BED CONSISTING INITIALLY OF A NON-WATER ABSORBENT POWDERED LUBRICANT POWDER, SOLIDIFIED SPHERICAL PARTICLES FORMED FROM SAID FLUID DROPS AND SOLIDIFYING DROPS FORMED FROM SAID FLUID DROPS, SAID BED KEPT IN THE FLUIDIZED STATE BY MEANS OF AN UPWARDLY DIRECTED GAS, SAID GAS HAVING A TEMPERATURE SUFFICIENTLY LOW TO CAUSE THE FLUID DROPS TO SOLIDIFY, WITHDRAWING THE RESULTANT SOLID SPHERICAL PARTICALS FROM THE FLUIDIZED BED, REMOVING THE LUBRICANT FROM SAID PARTICLES AND DRYING SAID PARTICLES.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |