Inventor

Karle J. Johnson

Inventor

Carlsbad, CA, US

Overview

1988–2013

Patent span

Electricity

Primary field (CPC H)

Patents· 24 as inventor

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

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication22%

H03DDemodulation or transference of modulation from one carrier to another20%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner10%

H03CModulation10%

H03HImpedance networks, e.g. resonant circuits10%

H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses9%

H04BTransmission9%

H04MTelephonic communication9%

H04WWireless communication networks3%

H04JMultiplex communication1%

PatentTitleYear

8,509,073'System and process for packet delineation'2013 7,916,641'System and process for packet delineation'2011 6,724,851'FIR chip for use in a wireless subscriber unit'2004 6,587,516'Subscriber unit producing a modulated digital frequency'2003 6,449,317'Digital synthesizer'2002 6,078,629'Digital synthesizer'2000 5,859,883'Subscriber unit for wireless digital subscriber communication system'1999 5,842,137'Subscriber unit for wireless digital telephone system'1998 5,694,430'Subscriber unit for wireless digital subscriber communication system'1997 5,644,602'Direct digital frequency synthesizer for use in a subscriber unit of a wireless digital communication system'1997 5,325,396'Subscriber unit for wireless digital subscriber communication system'1994 5,177,741'Subscriber unit for wireless digital telephone system'1993 5,168,507'Automatic adaptive equalizer'1992 5,159,705'Frequency synthesizer circuit'1992 5,146,473'Subscriber unit for wireless digital subscriber communication system'1992 5,101,418'Digital time-multiplexed quadrature frequency upconverter'1992 5,067,141'Interpolator for varying a signal sampling rate'1991 5,008,900'Subscriber unit for wireless digital subscriber communication system'1991 4,996,697'Deglitching means for digital communication systems'1991 4,994,802'Subscriber unit for wireless digital telephone system'1991 4,893,317'Digital signals and frequency correction in a digital wireless system'1990 4,881,240'AM equalizer circuit for digital systems'1989 4,825,448'Subscriber unit for wireless digital telephone system'1989 4,777,633'Base station for wireless digital telephone system'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1993Patents assigned to INT MOBILE MACHINES (12)· patent assignee history

1988–2013Based in Carlsbad, CA, US· patent location history

1994–2003Patents assigned to INTERDIGITAL TECH CORP (8)· patent assignee history

2011–2013Patents assigned to WI LAN INC (2)· patent assignee history

2013Patents assigned to ASIRVATHAM KRIPPS (1)· patent assignee history

2013Patents assigned to BOURLAS YAIR (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
INT MOBILE MACHINES	12	1988–1993
INTERDIGITAL TECH CORP	8	1994–2003
WI LAN INC	2	2011–2013
ASIRVATHAM KRIPPS	1	2013
BOURLAS YAIR	1	2013

Locations

Location	Patents	Span
Carlsbad, California, US	24	1988–2013