Inventor

William P. Campbell

Inventor

Washington, DC, US

Overview

13→

Patents

1978–2013

Patent span

Electricity

Primary field (CPC H)

Patents· 13 as inventor

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

H10Fprimary

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation11%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution11%

A61MDevices for introducing media into, or onto, the body7%

F24SSolar heat collectors7%

H02SGeneration of electric power by conversion of infrared radiation, visible light or ultraviolet light, e.g. using photovoltaic [pv] modules7%

LOC247%

A47JKitchen equipment4%

A61FFilters implantable into blood vessels4%

A61NElectrotherapy4%

B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding4%

PatentTitleYear

D0682429'Hearing aid'2013 D0677388'Hearing aid'2013 6,992,951'Permanent seafloor seismic recording system utilizing micro electro-mechanical systems seismic sensors and method of deploying same'2006 5,290,233'Hypodermic injection device'1994 5,061,249'Hypodermic injection device'1991 5,022,560'Spigot and wrench combination for a beverage dispenser'1991 5,018,521'Method of and apparatus for increased transfer of heat into or out of the body'1991 4,705,913'Amorphous silicon devices and method of producing'1987 4,643,327'Insulated container hinge seal'1987 D0283866'Drinking vessel'1986 D0283775'Drinking vessel base'1986 4,172,740'Solar energy system'1979 4,081,289'Solar energy system'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1994Based in Washington, DC, US· patent location history

1986–1994Patents assigned to CAMPBELL WILLIAM P (7)· patent assignee history

1986–1991Based in Corona Del Mar, CA, US· patent location history

2006Based in Spring, TX, US· patent location history

2013Patents assigned to CAMPBELL WILLIAM (2)· patent assignee history

2013Patents assigned to CANO MIGUEL (2)· patent assignee history

2013Patents assigned to GN RESOUND AS (2)· patent assignee history

2013Patents assigned to PRUTNIKOV GREGORY (2)· patent assignee history

2013Based in Evanston, IL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CAMPBELL WILLIAM Pself	7	1986–1994
CAMPBELL WILLIAMself	2	2013
CANO MIGUEL	2	2013
GN RESOUND AS	2	2013
PRUTNIKOV GREGORY	2	2013

Locations

Location	Patents	Span
Washington, DC, US	6	1978–1994
Corona Del Mar, California, US	4	1986–1991
Evanston, Illinois, US	2	2013
Spring, Texas, US	1	2006