Multilayered filter films
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United States of America Patent
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Jul 11, 2000
Issued Date -
N/A
app pub date -
Jul 11, 1997
filing date -
Aug 28, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to multilayered filter films, and in particular, a multilayered filter film not having a substrate and a method for making the same. The method for making the multilayered filter film not having a substrate includes a step for forming a filter frame layer having a window on the substrate, a step for forming a multilayered film on the substrate inside the window and on the filter frame layer, and a step for removing the substrate from the filter frame layer and the multilayered film.
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