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Collapsible gel compositions

  • US RE35,068 E
  • Filed: 03/29/1994
  • Issued: 10/17/1995
  • Est. Priority Date: 01/28/1983
  • Status: Expired due to Term
First Claim
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1. A method of causing a discontinuous volume change in a gel, said gel including a polymer network defining an interstitial space and a gel fluid filling the interstitial space, comprising the steps of:

  • a) ionizing the gel sufficient to cause the gel to exhibit a discontinuous volume change upon exposure to sufficient electromagnetic radiation; and

    b) exposing the gel to electromagnetic radiation sufficient to cause the gel to exhibit a discontinuous volume change.

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