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Extract from the Register of European Patents

EP About this file: EP0023261

EP0023261 - Compensated magnetic deflection coil for electron beam lithography systems [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  14.08.1984
Database last updated on 06.07.2024
Most recent event   Tooltip14.08.1984No opposition filed within time limitpublished on 17.10.1984 [1984/42]
Applicant(s)For all designated states
International Business Machines Corporation
New Orchard Road
Armonk, NY 10504 / US
[N/P]
Former [1981/05]For all designated states
International Business Machines Corporation
Old Orchard Road
Armonk, N.Y. 10504 / US
Inventor(s)01 / Pfeiffer, Hans Christian
25 Ketcham Road
Ridgefield, CO 06877 / US
02 / Sturans, Maris Andris
Cedar Hill Road, Rd No.1 Box 227
Bedford, NY 10506 / US
[1981/05]
Representative(s)Schröder, Otto Heinrich Albrecht
IBM Corporation Säumerstrasse 4
8803 Rüschlikon / CH
[N/P]
Former [1983/36]Schröder, Otto H., Dr. Ing.
IBM Corporation Säumerstrasse 4
CH-8803 Rüschlikon / CH
Former [1981/05]Böhmer, Hans Erich, Dipl.-Ing.
Schönaicher Strasse 220
D-7030 Böblingen / DE
Application number, filing date80103386.118.06.1980
[1981/05]
Priority number, dateUS1979006172630.07.1979         Original published format: US 61726
[1981/05]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0023261
Date:04.02.1981
Language:DE
[1981/05]
Type: B1 Patent specification 
No.:EP0023261
Date:12.10.1983
Language:DE
[1983/41]
Search report(s)(Supplementary) European search report - dispatched on:EP16.10.1980
ClassificationIPC:H01J37/09, H01J37/147
[1981/05]
CPC:
H01J37/09 (EP,US); H01J37/1475 (EP,US)
Designated contracting statesDE,   FR,   GB [1981/05]
TitleGerman:Kompensierte magnetische Ablenkspule für Elektronenstrahl-Lithographiesysteme[1981/05]
English:Compensated magnetic deflection coil for electron beam lithography systems[1981/05]
French:Bobine compensée de déflexion magnétique pour des systèmes de lithographie par faisceau électronique[1981/05]
File destroyed:12.06.1999
Examination procedure31.03.1981Examination requested  [1981/23]
04.09.1981Despatch of a communication from the examining division (Time limit: M04)
04.12.1981Reply to a communication from the examining division
05.03.1982Despatch of a communication from the examining division (Time limit: M02)
20.04.1982Reply to a communication from the examining division
20.12.1982Despatch of communication of intention to grant (Approval: )
22.03.1983Communication of intention to grant the patent
30.03.1983Fee for grant paid
30.03.1983Fee for publishing/printing paid
Opposition(s)13.07.1984No opposition filed within time limit [1984/42]
Fees paidRenewal fee
23.06.1982Renewal fee patent year 03
21.06.1983Renewal fee patent year 04
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Documents cited:SearchUS3911321  [ ] (WARDLY GEORGE A);
 US4125772  [ ] (HOLMES DUANE C);
 US3984687  [ ] (LOEFFLER KARL H, et al);
 US3173116  [ ] (SCHNEIDER WILBUR G)
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.