IP Library Granted Patent US 8,715,731
Granted Patent B2
US 8,715,731 · App. 11/726,305 · Granted May 6, 2014

Process of reducing the bitter taste of water soluble actives by co-grinding the active with β cyclodextrin

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Quick Facts
Patent No.
US 8,715,731
App. No.
11/726,305
Granted
May 6, 2014
Kind
B2
Abstract

A process for reducing the intensity of the intrinsic bitter taste of a water soluble active which comprises dry mixing of said active with β-cyclodextrin.

Claims (7)

1. A process for reducing the intensity of the intrinsic bitter taste of a water soluble active, the process comprising dry mixing of said active with β-cyclodextrin for at least one hour at <30 rpm to form an inclusion complex, wherein the degree of formation of said inclusion complex upon dry mixing is at least 50% of said active and β-cyclodextrin, as determined quantitatively by Differential Scanning calorimetry (DSC); wherein said dry mixing step is carried out by co-grinding said active and said β-cyclodextrin in a ball mill, and wherein said active is famotidine.

2. A process according to claim 1 wherein said inclusion complex comprises said active and said β-cyclodextrin in about a 1:1 molar ratio.

3. A process according to claim 1 wherein said active has a water solubility of at least 1 mg/mL.

4. The product made from a process for reducing the intensity of the intrinsic bitter taste of a water soluble active, the process comprising dry mixing of said active with β-cyclodextrin for at least one hour at <30 rpm to form an inclusion complex, wherein the degree of formation of said inclusion complex upon dry mixing is at least 50% of said active and β-cyclodextrin, as determined quantitatively by Differential Scanning Calorimetry (DSC); wherein said dry mixing step is carried out by co-grinding said active and said β-cyclodextrin in a ball mill, and wherein said active is famotidine.

5. A tablet made from the product of a process for reducing the intensity of the intrinsic bitter taste of a water soluble active, the process comprising dry mixing of said active with β-cyclodextrin for at least one hour at <30 rpm to form an inclusion complex, wherein the degree of formation of said inclusion complex upon dry mixing is at least 50% of said active and β-cyclodextrin, as determined quantitatively by Differential Scanning Calorimetry (DSC); wherein said dry mixing step is carried out by co-grinding said active and said β-cyclodextrin in a ball mill, and wherein said active is famotidine.

6. A process according to claim 1 wherein the intensity of the bitter taste of said active is reduced by at least 50%.

7. A process for reducing the intensity of the intrinsic bitter taste of doxilamine succinate, the process comprising dry mixing of the doxilamine succinate with β-cyclodextrin to form an inclusion complex.

Assignments (7)
RELEASE OF SECURITY INTEREST Recorded Jan 10, 2020
From: THE BANK OF NOVA SCOTIA
To: AVOCA LLC; HERCULES LLC; ISP INVESTMENTS LLC; PHARMACHEM LABORATORIES LLC
Reel/Frame 051557/0504 →
SECURITY AGREEMENT Recorded Jul 3, 2017
From: AVOCA, INC.; HERCULES LLC; ISP INVESTMENTS LLC; PHARMACHEM LABORATORIES, INC.
To: THE BANK OF NOVA SCOTIA, AS ADMINISTRATIVE AGENT
Reel/Frame 043084/0753 →
CONVERSION Recorded Jan 30, 2017
From: ISP INVESTMENTS INC.
To: ISP INVESTMENTS LLC
Reel/Frame 041556/0499 →
RELEASE OF PATENT SECURITY AGREEMENT Recorded Mar 18, 2013
From: THE BANK OF NOVA SCOTIA
To: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; AQUALON COMPANY; ISP INVESTMENTS INC.; HERCULES INCORPORATED
Reel/Frame 030025/0320 →
PATENT RELEASE Recorded Sep 19, 2011
From: JPMORGAN CHASE BANK, N.A. (F/K/A THE CHASE MANHATTAN BANK)
To: ISP CAPITAL, INC.; ISP CHEMICAL PRODUCTS, INC.; VERONA, INC.
Reel/Frame 026930/0774 →
SECURITY AGREEMENT Recorded Sep 16, 2011
From: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; HERCULES INCORPORATED; AQUALON COMPANY; ISP INVESTMENT INC.
To: THE BANK OF NOVA SCOTIA, AS ADMINISTRATIVE AGENT
Reel/Frame 026918/0052 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2007
From: HALDAR, RAMA; RAY, DIPAN; TOBIA, DEBORAH; KOELMEL, DONALD; ETIENNE, SIDNEY
To: ISP INVESTMENTS INC.
Reel/Frame 019590/0889 →