Title:
METHOD OF MEASURING COATING AMOUNT AND METHOD OF ESTIMATING ELUTION BEHAVIOR
Document Type and Number:
WIPO Patent Application WO/2006/083001
Kind Code:
A1
Abstract:
The estimation method using near-infrared spectroscopy generally has low specificity and in particular, has difficulty in estimating of trace components. It has been difficult to accurately measure the amount of coating by near-infrared spectroscopy. For coping with this problem, the amount of coating applied onto objects, such as granules and uncoated tablets, is measured on the basis of scattering or absorption of light of 800 to 1100 nm wavelength region by additives applied onto the coating objects. Preferably, polyethylene glycol or compounds having long-chain hydrocarbon are used as the additives.
Inventors:
YOKOYAMA MAKOTO
UKAI KOJI
UKAI KOJI
Application Number:
PCT/JP2006/302200
Publication Date:
August 10, 2006
Filing Date:
February 02, 2006
Export Citation:
Assignee:
EISAI CO LTD (JP)
YOKOYAMA MAKOTO
UKAI KOJI
YOKOYAMA MAKOTO
UKAI KOJI
International Classes:
A61K9/36; G01N21/35; A61K47/10; A61K47/12; A61K47/14; A61K47/34; A61K47/38; G01N21/3563; G01N21/359; G01N33/15
Foreign References:
| JP2002530664A | 2002-09-17 | |||
| JPS6166115A | 1986-04-04 | |||
| JPH01221662A | 1989-09-05 | |||
| JPH0627019A | 1994-02-04 | |||
| JPH09113441A | 1997-05-02 | |||
| JPH08178842A | 1996-07-12 | |||
| JP2002538432A | 2002-11-12 | |||
| JPH11248624A | 1999-09-17 |
Other References:
KEISO, vol. 48, no. 1, 1 January 2005 (2005-01-01), pages 62 - 65, XP003000565
See also references of EP 1857809A4
See also references of EP 1857809A4
Attorney, Agent or Firm:
Furuya, Satoshi (2-17-8 Nihonbashi-Hamacho, Chuo-k, Tokyo 07, JP)
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