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Extract from the Register of European Patents

EP About this file: EP0399226

EP0399226 - Voltage clamping circuit [Right-click to bookmark this link]
StatusThe application has been refused
Status updated on  26.04.1995
Database last updated on 20.12.2024
Most recent event   Tooltip26.04.1995Refusal of applicationpublished on 14.06.1995 [1995/24]
Applicant(s)For all designated states
International Business Machines Corporation
New Orchard Road
Armonk, NY 10504 / US
[N/P]
Former [1990/48]For all designated states
International Business Machines Corporation
Old Orchard Road
Armonk, N.Y. 10504 / US
Inventor(s)01 / Kosson, Julie S.
38 Sherman Street, Apartment No. 4
Burlington, Vermont 05401 / US
02 / McLennan, Michael J.
662 1/2 South Street No. 10
Lafayette, Indiana 47901 / US
[1990/48]
Representative(s)Schäfer, Wolfgang
IBM Deutschland
Informationssysteme GmbH
Patentwesen und Urheberrecht
70548 Stuttgart / DE
[N/P]
Former [1994/37]Schäfer, Wolfgang, Dipl.-Ing.
IBM Deutschland Informationssysteme GmbH Patentwesen und Urheberrecht
D-70548 Stuttgart / DE
Former [1993/19]Klocke, Peter, Dipl.-Ing.
IBM Deutschland Informationssysteme GmbH Patentwesen und Urheberrecht Pascalstrasse 100
D-70569 Stuttgart / DE
Former [1993/12]Klocke, Peter, Dipl.-Ing.
Patentanwälte Dipl.-Ing. Elmar Ott, Dipl.-Ing. Peter Klocke, Dipl.-Phys. Hans-J. Neubauer, Kappelstrasse 8
D-72160 Horb / DE
Former [1990/48]Gaugel, Heinz, Dipl.-Ing.
IBM Deutschland GmbH Schönaicher Strasse 220
D-7030 Böblingen / DE
Application number, filing date90107764.424.04.1990
[1990/48]
Priority number, dateUS1989035691725.05.1989         Original published format: US 356917
[1990/48]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP0399226
Date:28.11.1990
Language:EN
[1990/48]
Type: A3 Search report 
No.:EP0399226
Date:02.10.1991
Language:EN
[1991/40]
Search report(s)(Supplementary) European search report - dispatched on:EP14.08.1991
ClassificationIPC:G05F1/613, G11C11/407
[1990/48]
CPC:
H03K5/08 (EP,US)
Designated contracting statesDE,   FR,   GB [1990/48]
TitleGerman:Spannungsklemmschaltung[1990/48]
English:Voltage clamping circuit[1990/48]
French:Circuit de fixation de tension[1990/48]
File destroyed:03.03.2001
Examination procedure13.12.1990Examination requested  [1991/06]
07.09.1993Despatch of a communication from the examining division (Time limit: M04)
09.12.1993Reply to a communication from the examining division
05.08.1994Despatch of communication of intention to grant (Approval: )
17.01.1995Despatch of communication that the application is refused, reason: formalities examination [1995/24]
27.01.1995Application refused, date of legal effect [1995/24]
Fees paidRenewal fee
29.04.1992Renewal fee patent year 03
27.04.1993Renewal fee patent year 04
29.04.1994Renewal fee patent year 05
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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.
Documents cited:Search[X]JP60246418  ;
 [X]JP63211414  ;
 [XP]EP0321226  (TOSHIBA KK [JP]);
 [A]US4780850  (MIYAMOTO HIROSHI [JP], et al);
 [A]DE3123457  (RCA CORP [US]);
 [A]US4634890  (LEE ROBERT D [US])
 [X]  - PATENT ABSTRACTS OF JAPAN vol. 10, no. 116 (P-452)(2173), 30 April 1986; & JP - A - 60246418 (NIPPON DENKI K.K.) 06.12.1985, & JP60246418 A 19860430
 [X]  - PATENT ABSTRACTS OF JAPAN vol. 13, no. 4 (P-809)(3352), 9 January 1989; & JP - A - 63211414 (OKI ELECTRIC IND. CO. LTD.) 02.09.1988, & JP63211414 A 19890109
 [A]  - IEEE JOURNAL OF SOLID-STATE CIRCUITS vol. SC-21, no. 5, October 1986, pages 643-648; S. FUJII et al.: "A 50-muA Standby 1M X 1/256K X 4 CMOS DRAM with High-Speed Sense Amplifier"
 [A]  - I.E.E.E. JOURNAL OF SOLID-STATE CIRCUITS vol. 23, no. 1, February 1988, pages 200-203, New York, NY, US; S.-L. LU: "A safe single-phase clocking scheme for CMOS circuits"
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.