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Inventor

Douglas Kirkpatrick

Inventor
San Francisco, CA, US

Overview

3→
Patents
1998–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

A61Gprimary
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons20%
F42BExplosive charges, e.g. for blasting, fireworks, ammunition20%
H01LSemiconductor devices20%
H05KPrinted circuits20%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1020%
PatentTitleYear
11,089,671Integrated circuit / printed circuit board assembly and method of manufacture20219,188,413'Shaped charge casing'20155,791,761'Wheelchair warning lamp, umbrella, and accessory storage apparatus'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998Based in Colorado Springs, CO, US· patent location history
2015Patents assigned to CHAPMAN NIGEL (1)· patent assignee history
2015Patents assigned to KIRKPATRICK DOUGLAS (1)· patent assignee history
2015Patents assigned to MCLEAN STEPHEN JAMES (1)· patent assignee history
2015Patents assigned to SECR DEFENCE (1)· patent assignee history
2015Based in Sevenoaks, GB· patent location history
2021Patents assigned to ERIDAN COMMUNICATIONS INC (1)· patent assignee history
2021Based in San Francisco, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHAPMAN NIGEL12015
ERIDAN COMMUNICATIONS INC12021
KIRKPATRICK DOUGLASself12015
MCLEAN STEPHEN JAMES12015
SECR DEFENCE12015
Locations
LocationPatentsSpan
San Francisco, California, US12021
Sevenoaks, GB12015
Colorado Springs, CO, US11998