Inventor · disambiguated record
Franciscus A. C. M. Schoofs
Also filed as: SCHOOFS FRANCISCUS · SCHOOFS FRANCISCUS A C M · SCHOOFS FRANCISCUS ADRIANUS C
33 granted patents·643 citations·filing 1977–2015
98Inventor score
Top patents by PatentIndex Score
33 records- 0190US4642674AField effect semiconductor device having improved voltage breakdown characteristicsPHILIPS CORP·Filed 1986·Granted Feb 10, 1987·81 cites·11 claims
- 0290US4254442ACircuit for the protection of telephone linesPHILIPS CORP·Filed 1977·Granted Mar 3, 1981·41 cites·7 claims
- 0388US5387882ASwitched capacitor charge pump and sawtooth oscillator using samePHILIPS CORP·Filed 1994·Granted Feb 7, 1995·61 cites·11 claims
- 0487US5946207APower supply having a synchronous rectifier circuit for improved switching timingPHILIPS CORP·Filed 1998·Granted Aug 31, 1999·93 cites·7 claims
- 0576US5757625ASwitched mode power supply with transformer and feedback via primary windingPHILIPS CORP·Filed 1996·Granted May 26, 1998·56 cites·17 claims
- 0673US5369308APower transistor switching circuit with controlled turn-offPHILIPS CORP·Filed 1993·Granted Nov 29, 1994·28 cites·12 claims
- 0772US5095261ATransient protection circuit for a dc voltage supplyPHILIPS CORP·Filed 1989·Granted Mar 10, 1992·30 cites·18 claims
- 0868US9705489B2Cascode transistor circuitNXP BV·Filed 2015·Granted Jul 11, 2017·2 cites·15 claims
- 0966US6298222B1Communication system, device and methodPHILIPS CORP·Filed 1998·Granted Oct 2, 2001·23 cites·6 claims
- 1063US5068571ASwitched bridge circuitPHILIPS CORP·Filed 1990·Granted Nov 26, 1991·30 cites·24 claims
- 1163US4663749AApparatus for reproducing information from an optically readable record carrierPHILIPS CORP·Filed 1985·Granted May 5, 1987·14 cites·5 claims
- 1261US4712091ADigital/analog converter having a switchable reference currentPHILIPS CORP·Filed 1985·Granted Dec 8, 1987·18 cites·9 claims
- 1361US4459632AVoltage-limiting circuitPHILIPS CORP·Filed 1981·Granted Jul 10, 1984·19 cites·9 claims
- 1459US4370526AArrangement for applying a ringing voltage to a subscriber's linePHILIPS CORP·Filed 1981·Granted Jan 25, 1983·13 cites·3 claims
- 1558US4908551ADC/AC bridge circuitPHILIPS CORP·Filed 1988·Granted Mar 13, 1990·12 cites·13 claims
- 1655US5412234AIntegrated semiconductor circuit having improved breakdown voltage characteristicsPHILIPS CORP·Filed 1994·Granted May 2, 1995·17 cites·8 claims
- 1752US4535303ADriver circuitPHILIPS CORP·Filed 1982·Granted Aug 13, 1985·8 cites·10 claims
- 1850US5764205APicture display and selection driver and integrated driver circuit for use in such a picture display devicePHILIPS CORP·Filed 1996·Granted Jun 9, 1998·15 cites·8 claims
- 1948US4306122ATelephone line circuitPHILIPS CORP·Filed 1980·Granted Dec 15, 1981·8 cites·11 claims
- 2046US5304865AComparator circuit comprising input signal attenuatorPHILIPS CORP·Filed 1993·Granted Apr 19, 1994·12 cites·5 claims
- 2142US5617503AMotor control arrangement, and shaver comprising such a motor control arrangementPHILIPS CORP·Filed 1993·Granted Apr 1, 1997·11 cites·45 claims
- 2242US5418501ASawtooth oscillatorPHILIPS CORP·Filed 1993·Granted May 23, 1995·6 cites·15 claims
- 2342US4484151AAmplifier circuitPHILIPS CORP·Filed 1983·Granted Nov 20, 1984·5 cites·6 claims
- 2441US5338949ASemiconductor device having series-connected junction field effect transistorsPHILIPS CORP·Filed 1993·Granted Aug 16, 1994·9 cites·6 claims
- 2539US4267408AArrangement for applying a signal to a transmission linePHILIPS CORP·Filed 1979·Granted May 12, 1981·3 cites·4 claims
- 2637US5105328ASemiconductor circuit having an excess voltage protection circuitPHILIPS CORP·Filed 1989·Granted Apr 14, 1992·7 cites·22 claims
- 2736US4310733AArrangement for applying signals to a telephone linePHILIPS CORP·Filed 1980·Granted Jan 12, 1982·4 cites·5 claims
- 2835US4841564ADC-supply arrangement for a telecommunication linePHILIPS CORP·Filed 1987·Granted Jun 20, 1989·6 cites·4 claims
- 2931US5324978ASemiconductor device having an improved breakdown voltage-raising structurePHILIPS CORP·Filed 1993·Granted Jun 28, 1994·2 cites·9 claims
- 3031US4608461ASubscriber circuit for a telephone networkPHILIPS CORP·Filed 1983·Granted Aug 26, 1986·2 cites·3 claims
- 3131US4313034AConnecting circuit for a telephone linePHILIPS CORP·Filed 1980·Granted Jan 26, 1982·2 cites·6 claims
- 3230US4689501ASignal level detector for compact disc playerPHILIPS CORP·Filed 1986·Granted Aug 25, 1987·3 cites·3 claims
- 3330US4415775AArrangement for exchanging signals between separated circuitsPHILIPS CORP·Filed 1981·Granted Nov 15, 1983·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →