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Inventor

Alan R. Johnston

Inventor
La Canada, CA, US

Overview

3→
Patents
1984–2005
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

A62Bprimary
A62BDevices, apparatus or methods for life-saving20%
B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general20%
G01SRadio direction-finding20%
G08BSignalling systems, e.g. personal calling systems20%
G11CStatic stores20%
PatentTitleYear
6,955,170'Automated respirator fit testing method and system'20054,884,243'Multi-port, optically addressed RAM'19894,479,053'Focal plane array optical proximity sensor'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984Patents assigned to NASA (1)· patent assignee history
1984–1989Based in La Canada, CA, US· patent location history
1989Patents assigned to CALIFORNIA INST OF TECHN (1)· patent assignee history
2005Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history
2005Based in West St. Paul, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
3M INNOVATIVE PROPERTIES CO12005
CALIFORNIA INST OF TECHN11989
NASA11984
Locations
LocationPatentsSpan
La Canada, California, US21984–1989
West St. Paul, Minnesota, US12005