Inventor

Clarence A. Niven

Inventor
White Bear Lake, MN, US

Overview

9→
Patents
1988–2000
Patent span
Human necessities
Primary field (CPC A)

Patents· 9 as inventor

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

A61Bprimary
A61BDiagnosis55%
A61FFilters implantable into blood vessels9%
B41FPrinting machines or presses9%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
Y10TTechnical subjects covered by former us classification9%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2000Patents assigned to MINNESOTA MINING & MFG (8)· patent assignee history
1988–2000Based in White Bear Lake, MN, US· patent location history
1989–1999Based in St. Paul, MN, US· patent location history
1999Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MINNESOTA MINING & MFG81988–2000
3M INNOVATIVE PROPERTIES CO11999
Locations
LocationPatentsSpan
White Bear Lake, Minnesota, US71988–2000
St. Paul, Minnesota, US21989–1999