EP0246842A3

A liquid crystal display device

Abstract

A liquid crystal display device comprising a liquid crystal cell (6) formed of a twist nematic liquid crystal (9) positioned between two electrode substrates (7,8) and a pair of polarisers (1,10) which are located one on either side of the liquid crystal cell (6), characterised in that at least one layer (5) of an optically anisotropic substance is provided between the pair of polarisers (1,10) in addition to the twist nematic liquid crystal (9).

EP0246842A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 18 May 2007, 19.4 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during
EP0107160A2	Cites	European Patent Office (EPO)	A	Search report
FR2564605A1	Cites	France	X	Search report
DE3431871A1	Cites	Germany	AD	Search report
US4443065A	Cites	United States of America	X	Search report
US4492433A	Cites	United States of America	X	Search report

31 members in 7 offices

This recordMember, by publication datePriority claim

Priority claims20

Priority claims
Document	Office	Kind	Date
11429986	Japan	–	1986-05-19
11429986	Japan	A	1986-05-19
17214286	Japan	–	1986-07-22
17214286	Japan	A	1986-07-22
17214386	Japan	–	1986-07-22
17214386	Japan	A	1986-07-22
17214486	Japan	–	1986-07-22
17214486	Japan	A	1986-07-22
30316886	Japan	–	1986-12-19
30316886	Japan	A	1986-12-19
11429986	–	–	–
17214286	–	–	–
17214386	–	–	–
17214486	–	–	–
30316886	–	–	–
JP19860114299	–	–	–
JP19860172142	–	–	–
JP19860172143	–	–	–
JP19860172144	–	–	–
JP19860303168	–	–	–

Members31

Family members, oldest first
Document	Office	Kind
EP0246842A2	European Patent Office (EPO)	A2	1987-11-25
KR870011494A	Republic of Korea	A	1987-12-23
JPS64519A	Japan	A	1989-01-05
JPH01131532A	Japan	A	1989-05-24
US4844569A	United States of America	A	1989-07-04
KR890016412A	Republic of Korea	A	1989-11-29
US4909606A	United States of America	A	1990-03-20
EP0246842A3This record	European Patent Office (EPO)	A3	1990-08-01
JPH0318164B2	Japan	B2	1991-03-11
US5035489A	United States of America	A	1991-07-30
US5136405A	United States of America	A	1992-08-04
KR920007409B1	Republic of Korea	B1	1992-08-31
JPH07191296A	Japan	A	1995-07-28
EP0795773A1	European Patent Office (EPO)	A1	1997-09-17
JP2674508B2	Japan	B2	1997-11-12
JPH09325314A	Japan	A	1997-12-16
JPH09325315A	Japan	A	1997-12-16
JPH09325316A	Japan	A	1997-12-16
EP0246842B1	European Patent Office (EPO)	B1	1998-09-23
DE3752219D1	Germany	D1	1998-10-29
DE3752219T2	Germany	T2	1999-02-18
JP2891227B2	Japan	B2	1999-05-17
HK1012041A1	Hong Kong, China	A1	1999-07-23
JPH11316363A	Japan	A	1999-11-16
JP2001100206A	Japan	A	2001-04-13
JP3188427B2	Japan	B2	2001-07-16
EP0795773B1	European Patent Office (EPO)	B1	2001-10-31
EP1156362A1	European Patent Office (EPO)	A1	2001-11-21
DE3752339D1	Germany	D1	2001-12-06
DE3752339T2	Germany	T2	2002-05-08
SG129210A1	Singapore	A1	2007-02-26

25 legal events, as 2 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2007-11-24	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2007-06-06	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2006-05-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2006-05-17	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2006-05-15	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2006-05-11	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2002-01-01	European patent in force as of 2002-01-01IF02	IF02	GB
1999-09-15	No opposition filedOpposition26N	26N	EP
1999-07-30	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
1999-07-30	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
1998-11-27	Fr: translation filedET	ET	EP
1998-10-29	Corresponds to:REF	REF	EP
1998-09-23	Designated contracting statesAK	AK	EP
1998-08-07	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
1998-08-05	Miscellaneous (deleted)DX	DX	EP
1998-03-12	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH	GRAH	EP
1997-12-01	Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG	GRAG	EP
1997-12-01	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH	GRAH	EP
1996-04-24	Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG	GRAG	EP
1993-03-24	First examination report despatched17Q	17Q	EP
1991-03-06	Request for examination filed17P	17P	EP
1990-08-01	Designated contracting statesAK	AK	EP
1990-06-13	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1987-11-25	Designated contracting statesAK	AK	EP
1987-10-10	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

A liquid crystal display device

Abstract

Term

Priority claims20

Members31

Over the term

Events

Numbers

Titles3

Classification

Designated states4