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Extract from the Register of European Patents

EP About this file: EP0895635

EP0895635 - OPTICAL FLYING HEAD WITH SOLID IMMERSION LENS HAVING RAISED CENTRAL SURFACE FACING MEDIA [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  10.03.2000
Database last updated on 21.09.2024
Most recent event   Tooltip10.03.2000Application deemed to be withdrawnpublished on 26.04.2000 [2000/17]
Applicant(s)For all designated states
Digital Papyrus Technologies
100 Kuniholm Drive
Holliston, MA 01746 / US
[1999/06]
Inventor(s)01 / LEE, Neville, K., S.
Hong Kong University of Science and Technnoloy
Dept. of IEEM Hong Kong / HK
02 / BERG, John, S.
175 Blackstone Street
Bellingham, MA 02019 / US
[1999/06]
Representative(s)Warren, Anthony Robert, et al
Baron Warren Redfern Cambridge House 100 Cambridge Grove Hammersmith London
W6 0LE / GB
[N/P]
Former [1999/06]Warren, Anthony Robert, et al
BARON & WARREN, 18 South End, Kensington
London W8 5BU / GB
Application number, filing date97922442.525.04.1997
[1999/06]
WO1997US06902
Priority number, dateUS1996063834926.04.1996         Original published format: US 638349
[1999/06]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report
No.:WO9741556
Date:06.11.1997
Language:EN
[1997/47]
Type: A2 Application without search report 
No.:EP0895635
Date:10.02.1999
Language:EN
The application published by WIPO in one of the EPO official languages on 06.11.1997 takes the place of the publication of the European patent application.
[1999/06]
Search report(s)International search report - published on:EP29.01.1998
ClassificationIPC:G11B7/12
[1999/06]
CPC:
B82Y10/00 (EP,US); G11B7/122 (EP,US); G11B7/1374 (EP,US);
G11B7/1387 (EP,US); G11B7/22 (EP,US); G11B2007/13727 (EP,US)
Designated contracting statesDE,   GB [1999/06]
TitleGerman:FLIEGENDER OPTISCHER ABTASTKOPF MIT FESTKÖRPERIMMERSIONSLINSE, DIE EINE DEM AUFZEICHNUNGSTRÄGER ZUGEWANDTE ERHABENE ZENTRALE FLÄCHE AUFWEIST[1999/06]
English:OPTICAL FLYING HEAD WITH SOLID IMMERSION LENS HAVING RAISED CENTRAL SURFACE FACING MEDIA[1999/06]
French:TETE OPTIQUE FLOTTANTE MUNIE D'UNE LENTILLE A IMMERSION MASSIVE DONT LA ZONE CENTRALE FACE AU SUPPORT EST SURELEVEE[1999/06]
Entry into regional phase19.11.1998National basic fee paid 
19.11.1998Designation fee(s) paid 
19.11.1998Examination fee paid 
Examination procedure21.11.1997Request for preliminary examination filed
International Preliminary Examining Authority: EP
26.11.1998Examination requested  [1999/06]
06.05.1999Despatch of a communication from the examining division (Time limit: M06)
02.11.1999Application deemed to be withdrawn, date of legal effect  [2000/17]
01.12.1999Despatch of communication that the application is deemed to be withdrawn, reason: renewal fee not paid in time  [2000/17]
Fees paidPenalty fee
Additional fee for renewal fee
30.04.199903   M06   Not yet paid
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Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Cited inInternational search[A]JPH07254185  ;
 [A]US4803337  (ISHIKAWA REIJI [JP], et al) [A] 21* claim 1 *;
 [A]EP0309947  (HONEYWELL INC [US]) [A] 21 * figures 1-3; claim 1 *;
 [X]EP0363966  (SANYO ELECTRIC CO [JP]) [X] 1-6,10,12 * page 9, line 58; figures 2,3,9; claims 1-11 *;
 [A]EP0405742  (DIGITAL EQUIPMENT CORP [US]) [A] 1,7 * figure 5; claims 1,2 *;
 [A]EP0409468  (MATSUSHITA ELECTRIC IND CO LTD [JP]) [A] 1 * figure 5; claim 1 *;
 [X]US5125750  (CORLE TIMOTHY R [US], et al) [X] 1 * figures 4,5B,6; claims 1-4 *;
 [A]EP0549236  (IBM [US]) [A] 1,7 * figures 3,4; claims 1-11 *;
 [A]EP0594193  (MATSUSHITA ELECTRIC IND CO LTD [JP]) [A] 1 * figure 1; claim 1 *;
 [X]EP0639830  (MATSUSHITA ELECTRIC IND CO LTD [JP]) [X] 1 * column 5, lines 22-31 * * column 8, lines 7-18; figure 3 *;
 [X]US5497359  (MAMIN HARRY J [US], et al) [X] 1,12-15,24,25 * the whole document *;
 [X]  - "Slider mounted solid immersion lens for optical storage", IBM TDB, ARMONK NY US, (1993), vol. 38, no. 12, page 51, XP002036756 [X] 1,13-15 * the whole document *
 [A]  - PATENT ABSTRACTS OF JAPAN, (19960229), vol. 096, no. 002, & JP07254185 A 19951003 (MATSUSHITA ELECTRIC IND CO LTD) [A] 1 * abstract *
 [A]  - "Use of Diamond-Like Carbon Thin-Film on a Silicon/Heat Sink", IBM TDB, ARMONK NY US, (199410), vol. 37, no. 10, page 501, XP000475753 [A] 1-5 * the whole document *
 [A]  - MANSFIELD S M, "High-numerical aperture lens system for optical storage", OPTIC LETTERS, USA, (19930215), vol. 18, no. 4, pages 305 - 307, XP000339186 [A] 1-5 * the whole document *
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.