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You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 158 678 210 patent documents

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139 196 new documents added

884 989 documents amended

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EP 1068055 A1 20010117 - WATER VAPOUR PERMEABLE MEMBRANE

Title (en)

WATER VAPOUR PERMEABLE MEMBRANE

Title (de)

WASSERDAMPFDURCHLÄSSIGE MEMBRAN

Title (fr)

MEMBRANE PERMEABLE A LA VAPEUR D'EAU

Publication

EP 1068055 A1 20010117 (DE)

Application

EP 99917788 A 19990318

Priority

DE 9900753 W 19990318
DE 19812756 A 19980323

Abstract (en)

[origin: DE19812756A1] The invention relates to a method and device for producing a membrane or a sheet which is water vapour permeable but water impervious, and consequently air permeable. Said membrane is produced by elastic stretching of a polymer sheet which is perforated in its stretched condition, and then relieved after the perforating step.

IPC 1-7

B26F 1/24; B26D 7/14

IPC 8 full level

B26D 7/14 (2006.01); B26F 1/24 (2006.01)

CPC (source: EP)

B26D 7/14 (2013.01); B26F 1/24 (2013.01)

Citation (search report)

See references of WO 9948653A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

DOCDB simple family (publication)

DE 19812756 A1 19991007; EP 1068055 A1 20010117; WO 9948653 A1 19990930

DOCDB simple family (application)

DE 19812756 A 19980323; DE 9900753 W 19990318; EP 99917788 A 19990318