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Inventor

Daniel M. Spearman

Inventor
Shoreview, MN, US

Overview

3→
Patents
1989–1999
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B01Dprimary
B01DSeparation67%
LOC2333%
PatentTitleYear
D0410727'Inlet filter'19994,836,931'Reinforced filter tube and method of making the same'19894,814,033'Method of making a reinforced filter tube'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1999Patents assigned to POROUS MEDIA CORP (3)· patent assignee history
1989Based in Shoreview, MN, US· patent location history
1999Based in The Woodlands, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
POROUS MEDIA CORP31989–1999
Locations
LocationPatentsSpan
Shoreview, Minnesota, US21989
The Woodlands, Texas, US11999