Flexsys S.A./N.V.
Records under this name other than patents Flexsys S.A./N.V. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,824,538 | Process for Improving the Purity of Quaternary Ammonium Hydroxides by Electrolysis in a Two-Compartment Cell Term ended Term ended Jan 23, 2026 · High confidence | Term ended | Term ended Jan 23, 2026 | High confidence |
| US 6,770,189 | Process for Improving the Purity of Quaternary Ammonium Hydroxides by Electrolysis Term ended Term ended May 24, 2022 · High confidence | Term ended | Term ended May 24, 2022 | High confidence |
| US 6,756,435 | Silica-Filled Rubbers Comprising a Quinone Diimine Term ended Term ended Mar 8, 2022 · High confidence | Term ended | Term ended Mar 8, 2022 | High confidence |
| US 8,048,489 | Compositions Comprising Biscitraconimide, Bisitaconimide, And/Or Citraconimido-Itaconimide Formerly held Lapsed on the fee record Ended Nov 1, 2015 · High confidence | Lapsed on the fee record | Ended Nov 1, 2015 | High confidence |
| US 6,465,691 | Solvent-free process for preparing thiuram disulfides Lapsed on the fee record Ended Oct 15, 2010 · From the USPTO record | Lapsed on the fee record | Ended Oct 15, 2010 | From the USPTO record |
| US 6,444,759 | Rubber vulcanizates having improved ageing properties Lapsed on the fee record Ended Sep 3, 2006 · From the USPTO record | Lapsed on the fee record | Ended Sep 3, 2006 | From the USPTO record |
| US 4,229,970 | Method and apparatus for measuring the rheological properties of an extrudable material Formerly held Term ended Term ended no later than Oct 28, 2000 · Low confidence | Term ended | Term ended no later than Oct 28, 2000 | Low confidence |
| US 4,245,517 | Method and apparatus for measuring modulus of a plastic polymer Formerly held Term ended Term ended no later than Jan 20, 2001 · Low confidence | Term ended | Term ended no later than Jan 20, 2001 | Low confidence |
| US 4,343,190 | Moving die rheometer, method of testing materials therewith, and die for use therein Formerly held Term ended Term ended no later than Aug 10, 2002 · Low confidence | Term ended | Term ended no later than Aug 10, 2002 | Low confidence |
| US 4,417,012 | Organic thiosulphates and thiosulphonates useful as stabilising agents for rubber vulcanisates Term ended Term ended no later than Nov 22, 2003 · Low confidence | Term ended | Term ended no later than Nov 22, 2003 | Low confidence |