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: 157 117 910 patent documents

This week's update (12/07/2024 12:00 CET):

139 301 new documents added

1 340 825 documents amended

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EP 0842236 A1 19980520 - PHOTOCHROMIC POLYMER

Title (en)

PHOTOCHROMIC POLYMER

Title (de)

PHOTOCHROMISCHES POLYMER

Title (fr)

POLYMERE PHOTOCHROMIQUE

Publication

EP 0842236 A1 19980520 (EN)

Application

EP 96924708 A 19960725

Priority

AU 9600466 W 19960725
AU PN443695 A 19950728

Abstract (en)

[origin: WO9705213A1] A photochromic monomer having formula (1), wherein n is an integer of 0 to 5; P is a photochromic dye moiety or derivative thereof; S is an organic spacer group; and R is a polymerisable group.

IPC 1-7

C09K 9/02; C07D 235/02; C07D 498/10; C08F 220/20; C08F 220/28; C08F 220/30; C08F 246/00; G02B 1/10; G02C 7/10

IPC 8 full level

C07D 498/10 (2006.01); C08F 220/26 (2006.01); C09K 9/02 (2006.01); G02B 5/23 (2006.01)

CPC (source: EP)

C07D 498/10 (2013.01); C08F 220/26 (2013.01); C09K 9/02 (2013.01); G02B 5/23 (2013.01)

Designated contracting state (EPC)

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

DOCDB simple family (publication)

WO 9705213 A1 19970213; AU PN443695 A0 19950817; EP 0842236 A1 19980520; EP 0842236 A4 19981021

DOCDB simple family (application)

AU 9600466 W 19960725; AU PN443695 A 19950728; EP 96924708 A 19960725