Magnetorheological compositions
Patent 6395193 Issued on May 28, 2002. Estimated Expiration Date: 
May 3, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 3, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2751352 2772761 2804955 3360475 Stable ferrofluid compositions and method of making same Magnetically controllable couplings containing ferrafluids Magnetorheological fluid dampers Magnetorheological fluid devices Fluid responsive to a magnetic field Powder metallurgy lubricant composition and methods for using same InventorsAssigneeApplicationNo. 564124 filed on 05/03/2000US Classes:252/62.52Flaw detection or magnetic clutchExaminersPrimary: Koslow, C. MelissaAttorney, Agent or FirmInternational ClassH01R 001/28AbstractThe invention provides a magnetorheological composition having reduced off-state forces and good performance. Specifically, this invention is directed to a magnetorheological composition that may comprise non-sperical magnetic-responsive particles and at least one friction-reducing additive that reduces the interparticle friction between the magnetic-responsive particles.Other References
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