Inventor

Franciscus A. C. M. Schoofs

Inventor

Eindhoven, NL

Overview

31→

Patents

1981–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 31 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Mprimary

H04MTelephonic communication21%

H03KPulse technique17%

H02HEmergency protective circuit arrangements8%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%

H03FAmplifiers8%

H10DInorganic electric semiconductor devices8%

G01RMeasuring electric variables4%

G11BInformation storage based on relative movement between record carrier and transducer4%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications4%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters2%

PatentTitleYear

9,705,489'Cascode transistor circuit'2017 6,298,222'Communication system, device and method'2001 5,946,207'Power supply having a synchronous rectifier circuit for improved switching timing'1999 5,617,503'Motor control arrangement, and shaver comprising such a motor control arrangement'1997 5,418,501'Sawtooth oscillator'1995 5,412,234'Integrated semiconductor circuit having improved breakdown voltage characteristics'1995 5,387,882'Switched capacitor charge pump and sawtooth oscillator using same'1995 5,369,308'Power transistor switching circuit with controlled turn-off'1994 5,338,949'Semiconductor device having series-connected junction field effect transistors'1994 5,324,978'Semiconductor device having an improved breakdown voltage-raising structure'1994 5,304,865'Comparator circuit comprising input signal attenuator'1994 5,105,328'Semiconductor circuit having an excess voltage protection circuit'1992 5,095,261'Transient protection circuit for a dc voltage supply'1992 5,068,571'Switched bridge circuit'1991 4,908,551'DC/AC bridge circuit'1990 4,841,564'DC-supply arrangement for a telecommunication line'1989 4,712,091'Digital/analog converter having a switchable reference current'1987 4,689,501'Signal level detector for compact disc player'1987 4,663,749'Apparatus for reproducing information from an optically readable record carrier'1987 4,642,674'Field effect semiconductor device having improved voltage breakdown characteristics'1987 4,608,461'Subscriber circuit for a telephone network'1986 4,535,303'Driver circuit'1985 4,484,151'Amplifier circuit'1984 4,459,632'Voltage-limiting circuit'1984 4,415,775'Arrangement for exchanging signals between separated circuits'1983 4,370,526'Arrangement for applying a ringing voltage to a subscriber\'s line'1983 4,313,034'Connecting circuit for a telephone line'1982 4,310,733'Arrangement for applying signals to a telephone line'1982 4,306,122'Telephone line circuit'1981 4,267,408'Arrangement for applying a signal to a transmission line'1981 4,254,442'Circuit for the protection of telephone lines'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–2001Patents assigned to PHILIPS CORP (30)· patent assignee history

1981–2001Based in Eindhoven, NL· patent location history

2017Patents assigned to NXP BV (1)· patent assignee history

2017Patents assigned to Nexperia BV (1)· patent assignee history

2017Based in Valkenswaard, NL· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PHILIPS CORP	30	1981–2001
NXP BV	1	2017
Nexperia BV	1	2017

Locations

Location	Patents	Span
Eindhoven, NL	30	1981–2001
Valkenswaard, NL	1	2017