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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: 159 823 134 patent documents

This week's update (15/11/2024 12:00 CET):

143 307 new documents added

1 003 170 documents amended

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EP 0038008 B1 19830223 - CLEANING PROCESS FOR REGENERATED SIZE BATHS

Title (en)

CLEANING PROCESS FOR REGENERATED SIZE BATHS

Publication

EP 0038008 B1 19830223 (DE)

Application

EP 81102598 A 19810407

Priority

DE 3013925 A 19800411

Abstract (en)

[origin: US4331539A] A method of processing regenerated liquors of polyacrylate, polyvinyl alcohol and carboxymethylcellulose (CMC) sizes for reuse, wherein the impurities are substantially removed, without noticeably changing the properties of the size, by constantly aerating the liquor and separating off the precipitate thereby formed.

IPC 1-7

D06L 1/14

IPC 8 full level

D06M 15/00 (2006.01); D06L 1/14 (2006.01)

CPC (source: EP US)

D06L 1/14 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0038008 A1 19811021; EP 0038008 B1 19830223; AT E2628 T1 19830315; DE 3013925 A1 19811022; DE 3160083 D1 19830331; JP S56159367 A 19811208; US 4331539 A 19820525

DOCDB simple family (application)

EP 81102598 A 19810407; AT 81102598 T 19810407; DE 3013925 A 19800411; DE 3160083 T 19810407; JP 5308581 A 19810410; US 24230381 A 19810310