EP1559685A3

Devices that change size/shape via osmotic pressure

Abstract

The invention concerns water-desalination and/or purification devices. The devices include specified types of water-absorbing solute encapsulated by nonporous, water-permeable polymer membranes having specified properties. The invention also concerns methods of using the devices in water treatment.

Term

Term ended

Projected expiry passed 9 November 2021, 4.9 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

Every citation, both ways

Citations
DocumentRelationOfficeCategoryCited duringRelevant claims
EP0121099A2CitesEuropean Patent Office (EPO)XSearch report1-5
EP0360612A1CitesEuropean Patent Office (EPO)XSearch report1-5
DE2851105A1CitesGermanyXSearch report1-5
US4879030ACitesUnited States of AmericaXSearch report1-5
US4920105ACitesUnited States of AmericaXSearch report1-5
US5428123ACitesUnited States of AmericaDASearch report4
WO9841314A1CitesWorld Intellectual Property Organization (WIPO)XSearch report1-5