Tenneco GmbH
194Patents
157Active
194Granted
57Portfolio score
Filing activity: Sep 27, 1972 → Jun 2, 2023 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4465308A | Connection flange for tubular members | Mechanical Engineering; Lighting; Heating | 110 | Expired |
| US4846302A | Acoustic muffler | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4913260A | Gas silencing system with controlling sound attenuation | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4028243A | Relief valve for a fluid filter assembly | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4004887A | Catalytic converter having a resilient thermal-variation compensating monolith-mounting arrangement | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US3989471A | Radial flow catalytic converter having thermal expansion compensating means | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4161509A | Monolithic converter | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US3960232A | Exhaust system mounting | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4373329A | Tubular exhaust manifold | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4192401A | Complete louver flow muffler | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4331210A | Live spindle vehicle drive wheel assembly with axially moveable axle | Performing Operations; Transporting | 19 | Expired |
| US4087039A | Method of making catalytic converters for exhaust gases | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4756383A | Muffler with adjustable bushing | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4111279A | Louver flow muffler | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4735283A | Muffler with flow director plates | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4109755A | Noise attenuator | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4655035A | Auxiliary air injector assembly | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4557358A | Synchronized clutch assembly with selective override for four-wheel drive vehicles | Emerging Cross-Sectional Technologies | 9 | Expired |
| US9587543B2 | Apparatus for the aftertreatment of the exhaust gases of diesel engines | Emerging Cross-Sectional Technologies | 9 | Active |
| US4166792A | In-line fluid filter | Performing Operations; Transporting | 9 | Expired |
| US3975826A | Catalytic converter for exhaust gases | Emerging Cross-Sectional Technologies | 9 | Expired |
| US3946764A | Insulator sleeve for conduits | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4343386A | Ball movement coordinator and cam member for torque responsive hub clutch | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US10041389B2 | Valve housing and valve | Emerging Cross-Sectional Technologies | 8 | Active |
| US4019599A | Spring type pipe support | Mechanical Engineering; Lighting; Heating | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.