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Inventor

William K. Stewart

Inventor
Lexington, MA, US

Overview

15→
Patents
1990–2019
Patent span
Physics
Primary field (CPC G)

Patents· 15 as inventor

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

G06Fprimary
G06FElectric digital data processing29%
G01SRadio direction-finding13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
G11BInformation storage based on relative movement between record carrier and transducer8%
H04MTelephonic communication8%
H04WWireless communication networks8%
A01KAnimal husbandry4%
G01RMeasuring electric variables4%
G05FSystems for regulating electric or magnetic variables4%
H03KPulse technique4%
PatentTitleYear
10,278,028System and method for monitoring locations of mobile devices20199,750,229'In-home pet feeding and monitoring system'20179,712,978'System and method for monitoring locations of mobile devices'2017D0759905'In-home pet feeding and monitoring system'20168,880,551'Field oriented pipeline architecture for a programmable data streaming processor'20147,840,838'Rapid regeneration of failed disk sector in a distributed database system'20107,730,077'Intelligent storage device controller'20107,698,338'Field oriented pipeline architecture for a programmable data streaming processor'20107,281,160'Rapid regeneration of failed disk sector in a distributed database system'20076,104,210'Method for avoiding bus contention in a digital circuit'20006,061,511'Reconstruction engine for a hardware circuit emulator'20005,583,464'Resistor circuit for integrated circuit chip using insulated field effect transistors'19965,384,594'Smart tracking system'19955,231,483'Smart tracking system'19934,980,871'Ultrasonic tracking system'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1993Patents assigned to VISIONARY PRODUCTS INC (2)· patent assignee history
1990–1995Based in Woburn, MA, US· patent location history
1996–2014Based in Lexington, MA, US· patent location history
2000Patents assigned to IKOS SYSTEMS INC (2)· patent assignee history
2007–2010Patents assigned to NETEZZA CORP (4)· patent assignee history
2016–2017Patents assigned to PETTRAX INC (2)· patent assignee history
2016–2017Based in Stoughton, MA, US· patent location history
2017–2019Patents assigned to QUALCOMM INC (2)· patent assignee history
2017–2019Based in San Francisco, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NETEZZA CORP42007–2010
IKOS SYSTEMS INC22000
PETTRAX INC22016–2017
QUALCOMM INC22017–2019
VISIONARY PRODUCTS INC21990–1993
Locations
LocationPatentsSpan
Lexington, Massachusetts, US81996–2014
Woburn, Massachusetts, US31990–1995
San Francisco, California, US22017–2019
Stoughton, Massachusetts, US22016–2017