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Inventor

Duane J. Loeper

Inventor
Spring City, PA, US

Overview

7→
Patents
1992–2009
Patent span
Electricity
Primary field (CPC H)

Patents· 7 as inventor

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

H03Kprimary
H03KPulse technique29%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers29%
G11CStatic stores14%
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 systems14%
H10DInorganic electric semiconductor devices14%
PatentTitleYear
7,529,070'Power pin to power pin electro-static discharge (ESD) clamp'20097,276,957'Floating well circuit having enhanced latch-up performance'20077,196,561'Programmable reset signal that is independent of supply voltage ramp rate'20076,191,963'Charge pump with no diode drop at output stage'20016,125,057'Segmented source memory array'20005,321,758'Power efficient hearing aid'19945,111,506'Power efficient hearing aid'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to ENSONIG CORP (1)· patent assignee history
1992Based in Phoenixville, PA, US· patent location history
1994Patents assigned to ENSONIC CORP (1)· patent assignee history
1994Based in Phoenxville, PA, US· patent location history
2000–2001Patents assigned to LUCENT TECHNOLOGIES INC (2)· patent assignee history
2000–2009Based in Spring City, PA, US· patent location history
2007–2009Patents assigned to AGERE SYSTEMS INC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AGERE SYSTEMS INC32007–2009
LUCENT TECHNOLOGIES INC22000–2001
ENSONIC CORP11994
ENSONIG CORP11992
Locations
LocationPatentsSpan
Spring City, Pennsylvania, US52000–2009
Phoenxville, Pennsylvania, US11994
Phoenixville, Pennsylvania, US11992