Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Reexamination Certificate
2007-04-24
2007-04-24
Green, Anthony J. (Department: 1755)
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
C008S09410R, C008S09419C, C008S094260, C008S094280, C252S008570, C427S389000
Reexamination Certificate
active
11368054
ABSTRACT:
Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338 , of at least 30 min.
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Kaplan Ahmet
Kleban Martin
Reiners Jürgen
Winther Henrik
Green Anthony J.
Lanxess Deutschland GmbH
Miller Michael A.
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