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patent | score | priority | expiry | expired | references | current assignee | title |
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6544935 | 47 | 1999-07-09 | 2020-07-06 | 1 | 12 | The Lubrizol Corporation; | Nitrogen-containing esterified carboxy-containing interpolymers having enhanced oxidative stability and lubricants containing them |
11923574 | 79 | 2021-05-04 | 2042-09-15 | 0 | 0 | Toyota Motor Engineering & Manufacturing Nort…; | Fuel cell powertrain with integrated air filter |