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Inventor

Randall L. Derr

Inventor
Bellbrook, OH, US

Overview

4→
Patents
1992–2001
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 4 as inventor

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

F16Fprimary
F16FSprings38%
Y10TTechnical subjects covered by former us classification25%
B60GVehicle suspension arrangements13%
B60TVehicle brake control systems or parts thereof13%
F16KValves13%
PatentTitleYear
6,264,290'Single-operation valve assembly for braking systems and the like'20015,577,579'Method of manufacturing a suspension damper'19965,333,708'Compression cut-off valve for a hydraulic damper'19945,163,538'Low level damping valve and method for a semi-active hydraulic damper'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1996Patents assigned to GEN MOTORS CORP (3)· patent assignee history
1992–2001Based in Bellbrook, OH, US· patent location history
2001Patents assigned to DELPHI TECH INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GEN MOTORS CORP31992–1996
DELPHI TECH INC12001
Locations
LocationPatentsSpan
Bellbrook, OH, US41992–2001