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EP About this file: EP0670510

EP0670510 - Liquid crystal spatial light phase modulator [Right-click to bookmark this link]
Former [1995/36]	Optical apparatus
	[2001/51]
Status	No opposition filed within time limit Status updated on 18.07.2003 Database last updated on 27.07.2024
Most recent event Tooltip	11.07.2008	Change - representative	published on 13.08.2008 [2008/33]
Applicant(s)	For all designated states Sharp Kabushiki Kaisha 22-22 Nagaike-cho Abeno-ku Osaka-shi Osaka-fu 545-0013 / JP
	[N/P]
Former [2002/37]	For all designated states SHARP KABUSHIKI KAISHA 22-22 Nagaike-cho, Abeno-ku Osaka-shi, Osaka-fu 545-0013 / JP
Former [1995/36]	For all designated states SHARP KABUSHIKI KAISHA 22-22 Nagaike-cho Abeno-ku Osaka 545 / JP
Inventor(s)	01 / May, Paul 19 Elizabeth Avenue Abingdon, Oxon, OX14 2NS / GB
	02 / Davis, Gillian 62 Farm Road Abingdon, Oxon, OX14 1LZ / GB
	[1995/36]
Representative(s)	Robinson, John Stuart Marks & Clerk LLP 4220 Nash Court Oxford Business Park South Oxford OX4 2RU / GB
	[N/P]
Former [2008/33]	Robinson, John Stuart Marks & Clerk, 4220 Nash Court, Oxford Business Park South Oxford OX4 2RU / GB
Former [2002/37]	Robinson, John Stuart Marks & Clerk Nash Court Oxford Business Park South Oxford OX4 2RU / GB
Former [1995/36]	Robinson, John Stuart MARKS & CLERK, Alpha Tower, Suffolk Street Queensway Birmingham, B1 1TT / GB
Application number, filing date	95301319.0	01.03.1995
	[1995/36]
Priority number, date	GB19940004001	02.03.1994 Original published format: GB 9404001
	[1995/36]
Filing language	EN
Procedural language	EN
Publication	Type:	A2 Application without search report
	No.:	EP0670510
	Date:	06.09.1995
	Language:	EN
	[1995/36]
	Type:	A3 Search report
	No.:	EP0670510
	Date:	25.10.1995
	Language:	EN
	[1995/43]
	Type:	B1 Patent specification
	No.:	EP0670510
	Date:	11.09.2002
	Language:	EN
	[2002/37]
Search report(s)	(Supplementary) European search report - dispatched on:	EP	04.09.1995
Classification	IPC:	G02F1/29, G02F1/035, G02F1/1337, G02F1/135	[1995/42]
	CPC:	G02F1/0356 (EP,US); G02F1/1337 (EP,US); G02F1/1358 (EP,US); G02F1/225 (EP,US); G02F1/292 (EP,US); G02F1/3558 (EP,US)
	Former IPC [1995/36]	G02F1/29, G02F1/035, G02F1/1337
Designated contracting states	DE, FR, GB [1995/36]
Title	German:	Optischer, räumlicher Flüssigkristall-Phasenmodulator	[2001/51]
	English:	Liquid crystal spatial light phase modulator	[2001/51]
	French:	Modulateur spatial de phase optique à cristal liquide	[2001/51]
	Former [1995/36]	Optischer Apparat
	Former [1995/36]	Optical apparatus
	Former [1995/36]	Appareil optique
Examination procedure	07.03.1996	Examination requested [1996/18]
	04.03.1999	Despatch of a communication from the examining division (Time limit: M06)
	06.09.1999	Reply to a communication from the examining division
	17.03.2000	Despatch of a communication from the examining division (Time limit: M04)
	01.07.2000	Reply to a communication from the examining division
	16.07.2001	Despatch of a communication from the examining division (Time limit: M04)
	22.10.2001	Reply to a communication from the examining division
	18.12.2001	Despatch of communication of intention to grant (Approval: Yes)
	08.04.2002	Communication of intention to grant the patent
	21.06.2002	Fee for grant paid
	21.06.2002	Fee for publishing/printing paid
Opposition(s)	12.06.2003	No opposition filed within time limit [2003/36]
Fees paid	Renewal fee
	12.03.1997	Renewal fee patent year 03
	10.03.1998	Renewal fee patent year 04
	11.03.1999	Renewal fee patent year 05
	13.03.2000	Renewal fee patent year 06
	16.03.2001	Renewal fee patent year 07
	13.03.2002	Renewal fee patent year 08
Opt-out from the exclusive Tooltip competence of the Unified Patent Court	See the Register of the Unified Patent Court for opt-out data
	Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:	Search	[X]EP0546891 (THOMSON CSF [FR]) [X] 1-4,7,8,12-15,22 * the whole document *;
		[X]EP0558801 (PIONEER ELECTRONIC CORP [JP]) [X] 1-4,7-9 * the whole document *;
		[X]US4576441 (KUBICK FREDERICK [US]) [X] 1-4,6,8-10,14-16,19-21 * the whole document *;
		[A]US3819248 (TAKEDA Y, et al) [A] 1-18 * column 3, line 49 - column 5, line 63; figures 3,4 *;
		[PX]US5317446 (MIR JOSE M [US], et al) [PX] 1-4,7-9,14,15 * column 4, line 22 - column 6, line 65; figures 3-5 *;
		[X]US3832033 (FURUHATA Y, et al) [X] 23,24 * the whole document *;
		[X]US5278924 (SCHAFFNER JAMES H [US]) [X] 1,2,25-28 * column 2, line 3 - line 27 * * column 3, line 50 - column 6, line 41; figures 2-6 *;
		[XA] - T.MOTOKI, "Low Voltage Optical Modulator Using Electrooptically Induced Phase Gratings", APPLIED OPTICS, NEW YORK, US, vol. 12, no. 7, pages 1472 - 1476 [X] 1-4,7-9,12-18 * the whole document * [A] 21
		[A] - K.YOSHINO ET AL., "Characteristics of Ferroelectric Liquid Crystal Sandwiched between Drawn and Poled Polyvinylidine Fluoride Thin Films", JAPANESE JOURNAL OF APPLIED PHYSICS, TOKYO, JP, vol. 27, no. 2, pages L129 - L131 [A] 23,24 * the whole document *
		[A] - Y.FURUHATA ET AL., "New Liquid-Crystal Method for Revealing Ferroelectric Domains", APPLIED PHYSICS LETTERS, NEW YORK, US, (19731001), vol. 23, no. 7, pages 361 - 362 [A] 23,24 * page 361, column R, line 40 - page 362, column L, line 9; figure 2 *
		[X] - V.I.BALAKSHII ET AL., "Amplitude Modulation of Light by Diffraction on Ba2NaNb5O15", SOVIET JOURNAL OF QUANTUM ELECTRONICS, NEW YORK, US, vol. 8, no. 9, pages 1078 - 1081 [X] 1,2,22 * abstract * * page 1078, column L, line 1 - column R, line 13 * * page 1079, column R, line 4 - page 1080, column L, line 12 *
		[Y] - FENG-ZHEN GUO ET AL., "Wide Sideband Generation by Quasi-Velocity-Matched Electrooptic Modulator Using Periodic Domain Inversion", PROCEEDINGS OF THE SPIE, BELLINGHAM, US, (19940124), vol. 2150, pages 243 - 246, XP000514278 [Y] 27,28 * abstract * * page 245 - page 246 *
		[Y] - T.SUETA ET AL., "High Speed Guided-Wave Optical Modulators", JOURNAL OF OPTICAL COMMUNICATION, BERLIN, DE, vol. 3, no. 2, pages 52 - 58 [Y] 27,28 * the whole document *

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