GPI coverage and content

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: 158 967 801 patent documents

This week's update (04/10/2024 12:00 CET):

150 730 new documents added

999 816 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0053897 B1 19850116 - FLEXIBLE STARCH BOUND NON-ASBESTOS PAPER

Title (en)

FLEXIBLE STARCH BOUND NON-ASBESTOS PAPER

Publication

EP 0053897 B1 19850116 (EN)

Application

EP 81305597 A 19811126

Priority

GB 8039121 A 19801205

Abstract (en)

[origin: EP0053897A1] Non-asbestos alternatives to starch-bound asbestos papers comprise a matrix of unfired ball clay which is reinforced by fine particles of a non-fibrous charged-layer-slicate mineral such as mica and by organic web-forming fibres such as cellulose, the whole being bound together by hydrolysed starch.

IPC 1-7

D21H 5/00

IPC 8 full level

D21H 13/36 (2006.01); D21H 13/44 (2006.01); D21H 17/00 (2006.01); D21H 17/28 (2006.01); D21H 17/68 (2006.01); D21H 21/34 (2006.01)

CPC (source: EP)

D21H 13/44 (2013.01); D21H 17/00 (2013.01); D21H 17/28 (2013.01); D21H 17/68 (2013.01)

Designated contracting state (EPC)

AT BE DE FR IT NL SE

DOCDB simple family (publication)

EP 0053897 A1 19820616; EP 0053897 B1 19850116; AT E11311 T1 19850215; DE 3168399 D1 19850228; JP S57121700 A 19820729; ZA 818290 B 19821124

DOCDB simple family (application)

EP 81305597 A 19811126; AT 81305597 T 19811126; DE 3168399 T 19811126; JP 19434881 A 19811202; ZA 818290 A 19811130