Inventor

Martin Redpath Johnson

Inventor
Stevenage, GB

Overview

10→
Patents
1991–2021
Patent span
Human necessities
Primary field (CPC A)

Patents· 10 as inventor

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

A61Pprimary
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations30%
C07DHeterocyclic compounds30%
A41DOuterwear3%
A42BHats3%
A61FFilters implantable into blood vessels3%
A61KPreparations for medical, dental or toiletry purposes3%
A62BDevices, apparatus or methods for life-saving3%
F16PSafety devices in general3%
G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2010Patents assigned to GLAXO GROUP LTD (5)· patent assignee history
1991–1995Based in Ware, GB· patent location history
1999–2001Patents assigned to GLAXO WELLCOME INC (4)· patent assignee history
1999–2001Based in Royston, GB· patent location history
2001–2010Based in Stevenage, GB· patent location history
2021Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history
2021Based in Farmington, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GLAXO GROUP LTD51991–2010
GLAXO WELLCOME INC41999–2001
3M INNOVATIVE PROPERTIES CO12021
Locations
LocationPatentsSpan
Stevenage, GB52001–2010
Royston, GB21999–2001
Ware, GB21991–1995
Farmington, Minnesota, US12021