LexDanaLexDanabeta
Inventor

David M. Ziemann

Inventor
Coon Rapids, MN, US

Overview

2→
Patents
2009–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 2 as inventor

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

B01Dprimary
B01DSeparation33%
F24FAir-conditioning33%
G06FElectric digital data processing33%
PatentTitleYear
10,921,020Air filter comprising frame with bowed inner edge20217,516,139'Processing of tree data structures'2009

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2009Patents assigned to JP MORGAN CHASE BANK (1)· patent assignee history
2009Based in London, GB· patent location history
2021Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history
2021Based in Coon Rapids, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
3M INNOVATIVE PROPERTIES CO12021
JP MORGAN CHASE BANK12009
Locations
LocationPatentsSpan
Coon Rapids, Minnesota, US12021
London, GB12009