Joseph W Sheehan

Inventor

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Work History

Patent OwnerApplications FiledYear
True Position Inc.
1
2001
SKYHOOK HOLDING, INC.
1
6
6
4
1
1999
2000
2001
2002
2009
HITACHI METALS, LTD.
1
2000
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
3
4
2
2000
2001
2002
AIRTOUCH COMMUNICATIONS, INC.
1
1995
TRUEPOSITION, INC.
1
2002
Teletrac, Inc.
1
1995

Inventor Addresses

AddressDuration
Newton Square, PADec 25, 01 - May 13, 03
Newton Square, PA, USJun 27, 02 - Aug 01, 02
Newtown Square, PAJul 24, 01 - Feb 07, 06
Newtown Square, PA, USNov 29, 01 - Apr 12, 11
Wayne, PASep 01, 98 - Sep 01, 98

Technology Profile

Technology Matters
G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES 8
H04B: TRANSMISSION 2
H04M: TELEPHONIC COMMUNICATION 1

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Patents / Publication

Patents / Publication #Year of Publication / IssuedTitleCitations
RE422852011Applications processor including a database system, for use in a wireless location system22
69963922006E911 overlay solution for GSM, for use in a wireless location system91
2004/0203,4292004E911 overlay solution for GSM, for use in a wireless location system43
66613792003Antenna selection method for a wireless location system114
65634602003Collision recovery in a wireless location system132

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