Nova Patents
ATE61935T1

Method for producing microcapsule.

Abstract

Microcapsules are advantageously produced with a high take-up of a water-soluble drug by preparing a W/O emulsion composed of a water-soluble drug-containing solution as the inner aqueous phase and a polymer-containing solution as the oil phase, dispersing said emulsion in an aqueous phase and subjecting the resulting W/O/W emulsion to an in-water drying, wherein the viscosity of the W/0 emulsion used in preparing the W/O/W emulsion is adjusted to about 150 to about 10,000 centipoises.

Term

Term ended

Projected expiry passed 17 January 2006, 20.7 years ago.

  1. Priority
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  3. Published
  4. Projected expiry
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28 members in 15 offices

This recordMember, by publication datePriority claim5 more offices are in the list below

Priority claims2

Priority claims
DocumentOfficeKindDate
2297885JapanA
26797785JapanA

Members28

Family members, oldest first
DocumentOfficeKind
PT81980APortugalA
GR860332BGreeceB
IE860199LIrelandL
EP0190833A2European Patent Office (EPO)A2
KR860006266ARepublic of KoreaA
KR860006266ARepublic of KoreaA
ES551696A0SpainA0
ES8703739A1SpainA1
EP0190833A3European Patent Office (EPO)A3
JPS62201816AJapanA
PT81980BPortugalB
HUT45893AHungaryA
HU196702BHungaryB
CA1260395ACanadaA
US4954298AUnited States of AmericaA
EP0190833B1European Patent Office (EPO)B1
AT61935TAustriaT
ATE61935T1This recordAustriaT1
DE3678308D1GermanyD1
KR920007831B1Republic of KoreaB1
KR920007831B1Republic of KoreaB1
IE58930B1IrelandB1
HK137793AHong Kong, ChinaA
SG134693GSingaporeG
US5330767AUnited States of AmericaA
JPH0720859B2JapanB2
LV5822A4LatviaA4
LV5822B4LatviaB4