Inventor

John F. Ewen

Inventor

Rochester, MN, US

Overview

1987–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 16 as inventor

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

H03Kprimary

H03KPulse technique25%

H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses14%

G05FSystems for regulating electric or magnetic variables11%

H03FAmplifiers11%

H04LTransmission of digital information, e.g. telegraphic communication7%

H10DInorganic electric semiconductor devices7%

G01RMeasuring electric variables4%

G06FElectric digital data processing4%

H03GControl of amplification4%

H03HImpedance networks, e.g. resonant circuits4%

PatentTitleYear

9,542,354'Generating a parallel data signal by converting serial data of a serial data signal to parallel data'2017 9,369,263'Calibration of sampling phase and aperature errors in multi-phase sampling systems'2016 8,872,587'Generating negative impedance compensation'2014 7,936,208'Bias circuit for a MOS device'2011 7,888,998'Low-voltage CMOS error amplifier with implicit reference'2011 6,862,322'Switchable-bandwidth optical receiver'2005 6,735,731'Architecture for built-in self-test of parallel optical transceivers'2004 6,297,685'High-speed fully-compensated low-voltage differential driver/translator circuit arrangement'2001 6,265,857'Constant current source circuit with variable temperature compensation'2001 5,497,337'Method for designing high-Q inductors in silicon technology without expensive metalization'1996 5,440,277'VCO bias circuit with low supply and temperature sensitivity'1995 5,381,060'Differential current switch to super buffer logic level translator'1995 5,301,196'Half-speed clock recovery and demultiplexer circuit'1994 4,833,425'Analog macro embedded in a digital gate array'1989 4,831,284'Two level differential current switch MESFET logic'1989 4,694,261'Integrated high gain voltage controlled oscillator'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2016Patents assigned to IBM (15)· patent assignee history

1987–1995Based in Yorktown Heights, NY, US· patent location history

1996Based in Westchester, NY, US· patent location history

2001–2017Based in Rochester, MN, US· patent location history

2017Patents assigned to GLOBALFOUNDRIES INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	15	1987–2016
GLOBALFOUNDRIES INC	1	2017

Locations

Location	Patents	Span
Rochester, Minnesota, US	9	2001–2017
Yorktown Heights, New York, US	6	1987–1995
Westchester, New York, US	1	1996