Inventor
James C. Rothman
Inventor
Burnsville, MN, US
Overview
Patents· 12 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 general35%
F02BInternal-combustion piston engines19%
Y02TClimate change mitigation technologies related to transportation15%
B01DSeparation12%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof12%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
PatentTitleYear
6,892,854'Muffler with catalytic converter arrangement; and method'20056,550,573'Muffler with catalytic converter arrangement, and method'20035,828,013'Muffler with catalytic converter arrangement; and method'19985,683,479'Air cleaner having scavenger arrangement'19975,575,826'Air cleaner'19965,426,269'Muffler with catalytic converter arrangement; and method'19955,401,285'Air cleaner having scavenger arrangement for precleaner and filter thereof'19955,355,973'Muffler with catalytic converter arrangement; and method'19945,293,742'Trap apparatus with tubular filter element'19945,246,205'Valve assembly and use'19935,123,501'In-line constricted sound-attenuating system'19924,588,423'Electrostatic separator'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–2005Patents assigned to DONALDSON CO INC (12)· patent assignee history
1986Based in Apple Valley, MN, US· patent location history
1992–2005Based in Burnsville, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DONALDSON CO INC | 12 | 1986–2005 |
Locations
| Location | Patents | Span |
|---|---|---|
| Burnsville, Minnesota, US | 11 | 1992–2005 |
| Apple Valley, Minnesota, US | 1 | 1986 |