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Inventor

Cynthia D. Bellefeuille

Inventor
Eden Prairie, MN, US

Overview

4→
Patents
1999–2001
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B01Dprimary
B01DSeparation33%
G11BInformation storage based on relative movement between record carrier and transducer33%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
PatentTitleYear
6,168,681'Method of making a filter device'20016,077,335'Filter and method for making a filter'20005,997,618'Filter and method for making a filter'19995,869,009'Filter device'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2000Patents assigned to DONALDSON CO INC (3)· patent assignee history
1999–2001Based in Eden Prairie, MN, US· patent location history
2001Patents assigned to DONALDSON & COMPANY INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DONALDSON CO INC31999–2000
DONALDSON & COMPANY INC12001
Locations
LocationPatentsSpan
Eden Prairie, Minnesota, US41999–2001