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Inventor

John S. Wiese

Inventor
Lakeville, MN, US

Overview

4→
Patents
1986–1998
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.

F01Nprimary
F01NGas-flow silencers or exhaust apparatus for machines or engines in general57%
Y02TClimate change mitigation technologies related to transportation29%
F02BInternal-combustion piston engines14%
PatentTitleYear
5,808,245'Vertical mount catalytic converter muffler'19985,426,269'Muffler with catalytic converter arrangement; and method'19954,969,537'Muffler assembly and method of manufacture'19904,580,657'Integral fluted tube for sound suppression and exhaust ejection'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1998Patents assigned to DONALDSON CO INC (4)· patent assignee history
1986–1990Based in Bloomington, MN, US· patent location history
1995–1998Based in Lakeville, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DONALDSON CO INC41986–1998
Locations
LocationPatentsSpan
Lakeville, Minnesota, US21995–1998
Bloomington, Minnesota, US21986–1990