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US3914430A Expired / Lapsed US ⏱️ 0.0 years remaining

Free-flowing, high density, agglomerated vitamin E powder compositions

Assignee: F Hoffmann La Roche AG
•
Filing: 1974-06-26
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Granted: 1975-10-21
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Expires: 1994-06-26
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Abstract

Abstract A novel spray-drying technique process, and the resulting composition, for preparing a high density, agglomerated vitamincontaining composition having improved tableting characteristics.

Inventors

  • 👤 Marco Alfred Cannalonga
  • 👤 Louis Vincent Czarecki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 12:16
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/14; A61K9/141; A61K9/148; A61K9/143; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5052; A61K9/5057; B; B01; B01D; B01D1/00; B01D1/16; B01D1/18

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 126 words
A SPRAY-DRIED FREE-FLOWING VITAMIN E ACTIVE POWER COMPOSITION FOR USE IN DIRECT COMPRESSION TABLETTING TECHNIQUES COMPRISING, IN PERCENTS BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, FROM ABOUT 45% TO ABOUT 60% OF DL-ATOCOPHERYL ACETATE, FROM ABOUT 38% TO ABOUT 53% OF A HYDROLYZED GETALIN HAVING AN O BLOOM AND A MOLECULAR WEIGHT OF ABOUT 9,000 TO 11,000, ABOUT 0.1% OF SODIUM BENZOATE, ABOUT 0.2% OF SORBIC ACID AND FROM ABOUT 1% TO ABOUT 3% OF SILICIC ACID, SAID POWDER COMPOSITION IN THE FORM OF AGGLOMERATED PARTICLES HAVING A BULK DENSITY RANGE OF FROM 25 TO 32 POUNDS PER CUBIC FOOT AND A PARTICL SIZE RANGE WHEREIN FROM 75% TO 100% OF THE PARTICLES ARE THE RANGE OF FROM 74 MICRONS TO 287 MICRONS.
Claim 2
Dependent Claim 126 words
A SPRAY-DRIED FREE-FLOWING VITAMIN E ACTIVE POWER COMPOSITION FOR USE IN DIRECT COMPRESSION TABLETTING TECHNIQUES COMPRISING, IN PERCENTS BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE COMPOSITION, FROM ABOUT 45% TO ABOUT 60% OF DL-ATOCOPHERYL ACETATE, FROM ABOUT 38% TO ABOUT 53% OF A HYDROLYZED GETALIN HAVING AN O BLOOM AND A MOLECULAR WEIGHT OF ABOUT 9,000 TO 11,000, ABOUT 0.1% OF SODIUM BENZOATE, ABOUT 0.2% OF SORBIC ACID AND FROM ABOUT 1% TO ABOUT 3% OF SILICIC ACID, SAID POWDER COMPOSITION IN THE FORM OF AGGLOMERATED PARTICLES HAVING A BULK DENSITY RANGE OF FROM 25 TO 32 POUNDS PER CUBIC FOOT AND A PARTICL SIZE RANGE WHEREIN FROM 75% TO 100% OF THE PARTICLES ARE THE RANGE OF FROM 74 MICRONS TO 287 MICRONS.
Claim 3
Dependent Claim 235 words
A spray-dried free-flowing vitamin E active powder composition for use in direct compression tableting techniques, comprising, in percents by weight based on the total weight of the composition, for about 45% to about 60% of dl- Alpha -tocopheryl acetate, from about 38% to about 53% of a hydrolyzed gelatin having O Bloom and a molecular weight of abOut 9,000 to 11,000, about 0.1% of sodium benzoate, about 0.2% of sorbic acid and from about 1% to about 2% of an absorbent comprising from about 4% to about 12% of a calcium silicate having a particle size of 3.4 microns, an oil absorption capacity of 100-300 pounds per 100 pounds and a surface area of 175 square meters per gram and from about 96% to about 88% of a fine particle-sized spray-dried vitamin E composition comprising, in percents by weight based on the weight of the spray-dried composition, from about 15% to about 20% of dl- Alpha -tocopheryl acetate, from about 80% to about 85% of hydrolyzed gelatin of O Bloom and a molecular weight of 9,000 to 11,000 about 1% of sodium benzoate and about 0.7% of sorbic acid, said powder composition in the form of agglomerated particles having a bulk density range from 25 to 32 pounds per cubic foot and a particle size range wherein from 75% to 100% of the particles are in the range of from 74 microns to 287 microns.
Claim 4
Dependent Claim 235 words
A spray-dried free-flowing vitamin E active powder composition for use in direct compression tableting techniques, comprising, in percents by weight based on the total weight of the composition, for about 45% to about 60% of dl- Alpha -tocopheryl acetate, from about 38% to about 53% of a hydrolyzed gelatin having O Bloom and a molecular weight of abOut 9,000 to 11,000, about 0.1% of sodium benzoate, about 0.2% of sorbic acid and from about 1% to about 2% of an absorbent comprising from about 4% to about 12% of a calcium silicate having a particle size of 3.4 microns, an oil absorption capacity of 100-300 pounds per 100 pounds and a surface area of 175 square meters per gram and from about 96% to about 88% of a fine particle-sized spray-dried vitamin E composition comprising, in percents by weight based on the weight of the spray-dried composition, from about 15% to about 20% of dl- Alpha -tocopheryl acetate, from about 80% to about 85% of hydrolyzed gelatin of O Bloom and a molecular weight of 9,000 to 11,000 about 1% of sodium benzoate and about 0.7% of sorbic acid, said powder composition in the form of agglomerated particles having a bulk density range from 25 to 32 pounds per cubic foot and a particle size range wherein from 75% to 100% of the particles are in the range of from 74 microns to 287 microns.

References Cited (Backward Citations)

US3137630A Cited
US3608083A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-20 1979-04-21 1979-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-20 1983-04-21 1983-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-20 1987-04-21 1987-10-21 $7700.00 Window Closed / Lapsed

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