Inventor

Olof Johnson

Inventor
Ashburnham, MA, US

Overview

4→
Patents
1977–2020
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
G01VGeophysics20%
A61BDiagnosis10%
G01TMeasurement of nuclear or x-radiation10%
G03DApparatus for processing exposed photographic materials10%
G21FProtection against x-radiation, gamma radiation, corpuscular radiation or particle bombardment10%
G21KHandling of particles or ionising radiation not otherwise provided for10%
H05BElectric heating10%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to EIKONIX CORP (1)· patent assignee history
1977Based in Chelmsford, MA, US· patent location history
2006Patents assigned to PHOTODETECTION SYSTEMS INC (1)· patent assignee history
2006–2020Based in Ashburnham, MA, US· patent location history
2019–2020Patents assigned to PHOTO DIAGNOSTIC SYSTEMS INC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PHOTO DIAGNOSTIC SYSTEMS INC22019–2020
EIKONIX CORP11977
PHOTODETECTION SYSTEMS INC12006
Locations
LocationPatentsSpan
Ashburnham, Massachusetts, US32006–2020
Chelmsford, Massachusetts, US11977