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Inventor

David M. Ruch

Inventor
Columbus, IN, US

Overview

3→
Patents
1995–2000
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F01Mprimary
F01MLubricating of machines or engines in general60%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof20%
Y02TClimate change mitigation technologies related to transportation20%
PatentTitleYear
6,123,061'Crankcase ventilation system'20005,669,366'Closed crankcase ventilation system'19975,456,239'Crankcase ventilation system'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2000Patents assigned to CUMMINS ENGINE CO INC (2)· patent assignee history
1995–2000Based in Columbus, IN, US· patent location history
1997Patents assigned to FLEETGUARD INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CUMMINS ENGINE CO INC21995–2000
FLEETGUARD INC11997
Locations
LocationPatentsSpan
Columbus, IN, US31995–2000