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EP0618673
European procedure
Extract from the Register of European Patents
EP About this file: EP0618673
| EP0618673 - A differential amplification circuit wherein a DC level at an output terminal is automatically adjusted [Right-click to bookmark this link] | |||
| Former [1994/40] | A differential amplification circuit wherein a DC level at an output terminal is automatically adjusted and a power amplifier wherein a BTL drive circuit is driven by a half wave | ||
| [1998/51] | Status | No opposition filed within time limit Status updated on 09.06.2000 Database last updated on 15.07.2024 | Most recent event Tooltip | 09.06.2000 | No opposition filed within time limit | published on 26.07.2000 [2000/30] | Applicant(s) | For all designated states SANYO ELECTRIC CO., LTD. 5-5, Keihanhondori 2-chome Moriguchi-shi, Osaka 570 / JP | [N/P] |
| Former [1999/32] | For all designated states SANYO ELECTRIC Co., Ltd. 5-5, Keihanhondori 2-chome Moriguchi-shi, Osaka 570 / JP | ||
| Former [1994/40] | For all designated states SANYO ELECTRIC Co., Ltd. 5-5, Keihanhondori 2-chome Moriguchi-shi, Osaka / JP | Inventor(s) | 01 /
Takahashi, Yoshiaki 2855-6, Nakano, Ora-machi Ora-gun, Gunma / JP | [1994/40] | Representative(s) | Glawe, Delfs, Moll Partnerschaft mbB von Patent- und Rechtsanwälten Postfach 26 01 62 80058 München / DE | [N/P] |
| Former [1994/40] | Glawe, Delfs, Moll & Partner Patentanwälte Postfach 26 01 62 D-80058 München / DE | Application number, filing date | 94103930.7 | 14.03.1994 | [1994/40] | Priority number, date | JP19930069916 | 29.03.1993 Original published format: JP 6991693 | JP19930167864 | 07.07.1993 Original published format: JP 16786493 | [1994/40] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0618673 | Date: | 05.10.1994 | Language: | EN | [1994/40] | Type: | A3 Search report | No.: | EP0618673 | Date: | 06.12.1995 | Language: | EN | [1995/49] | Type: | B1 Patent specification | No.: | EP0618673 | Date: | 11.08.1999 | Language: | EN | [1999/32] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 19.10.1995 | Classification | IPC: | H03F1/02, H03F1/30, H03F3/45 | [1995/49] | CPC: |
H03F1/0244 (EP,KR,US);
H03F1/0233 (EP,KR,US);
H03F1/307 (EP,KR,US)
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| Former IPC [1994/40] | H03F1/02 | Designated contracting states | DE, FR, GB [1994/40] | Title | German: | Eine Differenzverstärkerschaltung mit automatisch eingestelltem Gleichstrompegel an dem Ausgangsanschluss | [1998/51] | English: | A differential amplification circuit wherein a DC level at an output terminal is automatically adjusted | [1998/51] | French: | Un circuit amplificateur différentiel dont un niveau de courant continu est réglé automatiquement à un terminal de sortie | [1998/51] |
| Former [1994/40] | Eine Differenzverstärkerschaltung mit automatisch eingestelltem Gleichstrompegel an dem Ausgangsanschluss und ein Leistungsverstärker mit einer durch eine Halbwelle gesteuerte BTL-Schaltung | ||
| Former [1994/40] | A differential amplification circuit wherein a DC level at an output terminal is automatically adjusted and a power amplifier wherein a BTL drive circuit is driven by a half wave | ||
| Former [1994/40] | Un circuit amplificateur différentiel dont un niveau de courant continu et réglé automatiquement à un terminal de sortie et un amplificateur de puissance dont un circuit BTL de commande est commandé par une demie onde | Examination procedure | 08.03.1996 | Examination requested [1996/19] | 10.12.1996 | Despatch of a communication from the examining division (Time limit: M06) | 17.06.1997 | Reply to a communication from the examining division | 12.11.1998 | Despatch of communication of intention to grant (Approval: Yes) | 12.02.1999 | Communication of intention to grant the patent | 18.05.1999 | Fee for grant paid | 18.05.1999 | Fee for publishing/printing paid | Opposition(s) | 12.05.2000 | No opposition filed within time limit [2000/30] | Fees paid | Renewal fee | 15.03.1996 | Renewal fee patent year 03 | 17.03.1997 | Renewal fee patent year 04 | 19.03.1998 | Renewal fee patent year 05 | 19.03.1999 | Renewal fee patent year 06 |
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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 | [A]JPS5970307 ; | [A]JPS5531302 ; | [X]JPS58123615U (SANSUI DENKI K. K.) [X] 1 * page 1, column 1, line 1 - column 2, line 10; figures 2-5 *; | [X]US5162752 (PADI GYULA [US]) [X] 1 * column 6, line 42 - column 8, line 26; figures 2-7 *; | [X] - L. TOMASINI ET AL., "A Fully Differential CMOS Line Driver for ISDN", IEEE JOURNAL OF SOLID-STATE CIRCUITS, NEW YORK US, vol. 25, no. 2, pages 546 - 554, XP000116700 [X] 1-5 * page 548, column 1, line 8 - column 2, line 42 * DOI: http://dx.doi.org/10.1109/4.52183 | [A] - "Power Amplifier (Buffer) with Low Output Impedance and Current Measurement Capability", IBM TECHNICAL DISCLOSURE BULLETIN, NEW YORK US, vol. 30, no. 7, pages 95 - 97 [A] 1,4,5 * figures 1-3 * | [A] - PATENT ABSTRACTS OF JAPAN, (19840814), vol. 8, no. 176, Database accession no. (E - 260), & JP59070307 A 00000000 (MATSUSHITA DENKI SANGYO KK) [A] 1 * abstract * | [A] - PATENT ABSTRACTS OF JAPAN, (19800513), vol. 4, no. 63, Database accession no. (E - 010), & JP55031302 A 19800305 (TOSHIBA CORP) [A] 1 * abstract * | [A] - "Sinuswellen aus Dreieckspannungen", ELEKTROTECHNIK, WURZBURG DE, vol. 60, no. 20, page 124 [A] 3 * the whole document * |