ER Fluid Developments Limited

Also on record

Records under this name other than patents ER Fluid Developments Limited holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

Showing 1 to 6 of 6 · Back to ER Fluid Developments Limited

Patent	Title	Status	Expires	Confidence
US 6,272,852	High speed actuators and vibrators based on electro-rheological fluids Lapsed on the fee record Ended Aug 14, 2009 · From the USPTO record	Lapsed on the fee record	Ended Aug 14, 2009	From the USPTO record
US 4,483,788	Electric field responsive fluids Term ended Term ended no later than Nov 20, 2004 · Low confidence	Term ended	Term ended no later than Nov 20, 2004	Low confidence
US 4,664,236	Electrically controlled, progressive, frictional, torque transmitting device Term ended Term ended no later than May 12, 2007 · Low confidence	Term ended	Term ended no later than May 12, 2007	Low confidence
US 4,812,251	Electro-rheological fluids/electric field responsive fluids Term ended Term ended no later than Mar 14, 2009 · Low confidence	Term ended	Term ended no later than Mar 14, 2009	Low confidence
US 5,356,269	Variable displacement pump Term ended Term ended no later than Oct 18, 2014 · Low confidence	Term ended	Term ended no later than Oct 18, 2014	Low confidence
US 5,409,354	Variable displacement pump Term ended Term ended no later than Apr 25, 2015 · Low confidence	Term ended	Term ended no later than Apr 25, 2015	Low confidence