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Inventor

William J. Raddi

Inventor
Raleigh, NC, US

Overview

16→
Patents
1978–2006
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.

H02Jprimary
H02JElectric power networks38%
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 systems26%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications18%
G08BSignalling systems, e.g. personal calling systems6%
A61NElectrotherapy3%
F21SNon-portable lighting devices3%
F21VFunctional features or details of lighting devices or systems thereof3%
H03KPulse technique3%
PatentTitleYear
7,082,040'Power factor corrected UPS with improved connection of battery to neutral'20066,944,035'Power factor corrected UPS with improved connection of battery to neutral'20056,856,524'Power factor corrected UPS with improved connection of battery to neutral'20056,661,678'Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof'20036,400,586'Power factor corrected UPS with improved connection of battery to neutral'20026,314,007'Multi-mode power converters incorporating balancer circuits and methods of operation thereof'20016,262,899'Power factor corrected UPS maintaining neutral integrity and methods of operation thereof'20016,181,581'Multi-mode power converters incorporating balancer circuits and methods of operation thereof'20016,160,722'Uninterruptible power supplies with dual-sourcing capability and methods of operation thereof'20006,069,412'Power factor corrected UPS with improved connection of battery to neutral'20005,436,512'Power supply with improved circuit for harmonic paralleling'19954,935,861'Uninterrupted power supply having no low frequency power magnetics'19904,673,825'Uninterruptible power supply with isolated bypass winding'19874,255,746'Emergency lighting and fire detector system'19814,199,754'Circuit for an emergency lighting and fire detector system'19804,074,720'Cardiac pacer with rate runaway protection'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1981Patents assigned to ESB INC (3)· patent assignee history
1978–1981Based in Philadelphia, PA, US· patent location history
1987–1995Patents assigned to EXIDE ELECTRONICS CORP (2)· patent assignee history
1987–2006Based in Raleigh, NC, US· patent location history
1990Patents assigned to EXIDE ELECTRONICS (1)· patent assignee history
2000–2003Patents assigned to POWERWARE CORP (6)· patent assignee history
2005–2006Patents assigned to EATON POWER QUALITY CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
POWERWARE CORP62000–2003
ESB INC31978–1981
EATON POWER QUALITY CORP22005–2006
EXIDE ELECTRONICS CORP21987–1995
EXIDE ELECTRONICS11990
Locations
LocationPatentsSpan
Raleigh, NC, US131987–2006
Philadelphia, Pennsylvania, US31978–1981