US4603143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-flowing, high density, fat soluble vitamin powders with improved stability
Assignee: BASF Corp
•
Filing: 1984-09-07
•
Granted: 1986-07-29
•
Expires: 2004-09-07
Abstract
Abstract Vitamin-active powders which are more free-flowing and stable, than conventional fat-soluble vitamin powders are prepared utilizing special silicon-containing materials which are predominately in the form of substantially discrete agglomerates. The agglomerates are such that preferably 50 percent of the total have a minimum length, width, or both of 300 microns.
Inventors
- 👤 Douglass N. Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:22
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/35; A61K31/352; A61K31/353; A61K31/355; A61K9/00; A61K9/14; A61K9/141; A61K9/143; A61K9/16; A61K9/1605; A61K9/1611
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A stable, free-flowing Vitamin E or Vitamin E acetate-containing powder comprising: (a) Vitamin E or Vitamin E acetate in an amount sufficient to yield a content of about 40 to about 60 percent by weight based upon the total weight of the powder, and (b) a silicon containing adsorbent in the form of substantially discrete nonamorphous agglomerates, at least 50 percent of said agglomerates having a minimum length, width or both of 300 microns.
Claim 2
Dependent Claim
74 words
A stable, free-flowing Vitamin E or Vitamin E acetate-containing powder comprising: (a) Vitamin E or Vitamin E acetate in an amount sufficient to yield a content of about 40 to about 60 percent by weight based upon the total weight of the powder, and (b) a silicon containing adsorbent in the form of substantially discrete nonamorphous agglomerates, at least 50 percent of said agglomerates having a minimum length, width or both of 300 microns.
Claim 3
Dependent Claim
93 words
A process for making a dry, finely divided, free-flowing vitamin E or Vitamin E acetate-containing powder comprising: (a) adding a silicon-containing adsorbent in the form of substantially discrete nonamorphous agglomerates, at least 50 percent of said agglomerates having a minimum length, width, or both of 300 microns, to a container, and, thereafter, (b) adding thereto while mixing, a liquid form of a Vitamin E or Vitamin E acetate in an amount sufficient to yield a content of about 40 to about 60 percent by weight based upon the total weight of the powder.
Claim 4
Dependent Claim
93 words
A process for making a dry, finely divided, free-flowing vitamin E or Vitamin E acetate-containing powder comprising: (a) adding a silicon-containing adsorbent in the form of substantially discrete nonamorphous agglomerates, at least 50 percent of said agglomerates having a minimum length, width, or both of 300 microns, to a container, and, thereafter, (b) adding thereto while mixing, a liquid form of a Vitamin E or Vitamin E acetate in an amount sufficient to yield a content of about 40 to about 60 percent by weight based upon the total weight of the powder.
References Cited (Backward Citations)
US2858215A
Cited
US3247064A
Cited
US3421282A
Cited
US3608083A
Cited
US3914430A
Cited
US3947596A
Cited
JPS5266615A
Cited
JPS5315429A
Cited
EP0062225A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |