Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Tablets – lozenges – or pills
Reexamination Certificate
2000-08-07
2009-10-20
Hartley, Michael G (Department: 1618)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Tablets, lozenges, or pills
C424S490000, C424S494000, C424S495000, C424S497000
Reexamination Certificate
active
07604820
ABSTRACT:
A colonic delivery solid preparation containing chitosan powder, which can control the dissolution of a medicament therefrom in the large intestine and release the medicament contained therein specifically in the large intestine, obtained by successively coating a medicament-containing solid material with (1) a water-insoluble polymer having a chitosan powder dispersed therein and (2) an enteric polymer; and a solid preparation containing chitosan powder, which can partly release a medicament in the stomach and, after passing through the small intestine, disintegrate at an accelerated rate in the large intestine and release a medicament in the large intestine, obtained by coating a medicament-containing solid material with a water-insoluble polymer having a chitosan powder dispersed therein.
REFERENCES:
patent: 5188840 (1993-02-01), Iida et al.
patent: 5217720 (1993-06-01), Sekigawa et al.
patent: 5283064 (1994-02-01), Suzuki et al.
patent: 5731006 (1998-03-01), Akiyama et al.
patent: 5744166 (1998-04-01), Illum
patent: 5840332 (1998-11-01), Lerner et al.
patent: 6197322 (2001-03-01), Dutkiewicz et al.
patent: 6368629 (2002-04-01), Watanabe et al.
patent: 6506407 (2003-01-01), Watanabe et al.
patent: 2305762 (1999-04-01), None
patent: 466566 (1992-01-01), None
patent: 2 255 344 (1992-11-01), None
patent: 2255344 (1992-11-01), None
patent: 4-247026 (1992-09-01), None
patent: 04-247026 (1992-09-01), None
patent: 4-264021 (1992-09-01), None
patent: 04-264021 (1992-09-01), None
patent: 04-264022 (1992-09-01), None
patent: 4-264022 (1992-09-01), None
patent: 04-264023 (1992-09-01), None
patent: 4-264023 (1992-09-01), None
patent: 07-002701 (1995-01-01), None
patent: 7-2701 (1995-01-01), None
patent: 1997-7002071 (1997-05-01), None
patent: 89/00045 (1989-01-01), None
patent: 95/28963 (1995-11-01), None
patent: 99/18938 (1999-04-01), None
Higashi Yutaka
Mori Masaaki
Shimono Norihito
Dainippon Sumitomo Pharma Co. ,Ltd.
Hartley Michael G
Wenderoth , Lind & Ponack, L.L.P.
Young Micah-Paul
LandOfFree
Solid preparation containing chitosan powder and process for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solid preparation containing chitosan powder and process for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid preparation containing chitosan powder and process for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4073671