Stretchable patch

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Web – sheet or filament bases; compositions of bandages; or...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C424S400000, C424S443000, C424S447000, C514S772000, C514S772300

Reexamination Certificate

active

09959420

ABSTRACT:
A stretch plaster comprising a support membrane having a thickness of 1 to 50 μm and a drug containing adhesive layer having a thickness of 3 to 400 μm, wherein(i) the support membrane comprising a copolymer of 0 to 90% by weight of vinyl acetate, 10 to 97% by weight of alkyl (meth)acrylate having 3 to 14 of a mean carbon number of alkyl group and 0 to 15% by weight of (meth)acrylic acid,(ii) the copolymer is cross-linked by polyvalent metal such as aluminum or a poly-functional chain compound, wherein the cross-linking ratio is 20% or more of the theoretical total number of carboxyl group of the copolymer when the polymer is cross-linked by the polyvalent metal such as aluminum, and is 1 to 10% expressed by copolymerized ratio of the poly-functional chain compound when the copolymer is cross-linked by poly-functional chain compound,(iii) the support membrane has 150 g or less of self adhesion shown by an adhesion between the support membranes and(iv) the support membrane has 70% or more of an elasticity recovery when it stretches 10% of itself.

REFERENCES:
patent: 5298258 (1994-03-01), Akemi et al.
patent: 5344655 (1994-09-01), Sakai et al.
patent: 5393529 (1995-02-01), Hoffmann et al.
patent: 5753256 (1998-05-01), Cordes et al.
patent: 6045924 (2000-04-01), Bekele
patent: 6071531 (2000-06-01), Jona et al.
patent: 0 900 565 (1999-03-01), None
patent: 0900565 (1999-10-01), None
patent: 10-226638 (1998-08-01), None
patent: WO 97/23227 (1997-07-01), None
patent: WO 98/30210 (1998-07-01), None
Kokubo, Takemasa, et al. “Diffusion of drug in acrylic-type pressure-sensitive adhesive matrices. I. Influence of physical property of the matrices on the drug diffusion”, Journal of Controlled Release 17 Sep. 1991, No. 1, Amsterdam, NL.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Stretchable patch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stretchable patch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stretchable patch will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3729872

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.