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USPTO Patent Rankings Data through Dec 31, 2025
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Robert T. Foister — 19 Patents

Delphi Technologies: 9 patents #304 of 4,124Top 8%
General Motors: 6 patents #2,630 of 18,328Top 15%
BSBwi Company Limited S.A.: 2 patents #4 of 45Top 9%
BCBeijing West Industries Co.: 1 patents #53 of 102Top 55%
Rochester, MI: #49 of 860 inventorsTop 6%
Michigan: #4,375 of 86,293 inventorsTop 6%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
Robert T. Foister has been granted 19 US patents while listed as an inventor at Delphi Technologies. The first was granted in 1985 and the most recent in April 2015. Robert T. Foister ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Robert T. Foister in Rochester, MI, US.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9004243 Magneto-rheological damping assembly Thomas W. Nehl, Frederic Bailly, Guy Tessier 2015-04-14
8327984 Magnetorheological (MR) piston assembly with primary and secondary channels to improve MR damper force Thomas W. Nehl, William C. Kruckemeyer, Oliver Raynauld 2012-12-11
8286763 Magnetorheological fluid-based device having a magnetorheological piston assembly Thomas W. Nehl, Alexander Apostolos Alexandridis, William C. Kruckemeyer, Fang Deng 2012-10-16
7731863 Magnetorheological fluid with a fluorocarbon thickener Vardarajan R. Iyengar, Sally M. Yurgelevic 2010-06-08
7575695 Additives package and magnetorheological fluid formulations for extended durability Vardarajan R. Iyengar, Sally M. Yurgelevic 2009-08-18
6811717 Magnetorheological compositions for use in magnetorheological fluids and method of preparing same Vardarajan R. Iyengar 2004-11-02 $2,697,000
6787058 Low-cost MR fluids with powdered iron Vardarajan R. Iyengar, Sally M. Yurgelevic 2004-09-07 $1,705,000
6679999 MR fluids containing magnetic stainless steel Vardarajan R. Iyengar, James C. Johnson 2004-01-20 $1,480,000
6638443 Optimized synthetic base liquid for magnetorheological fluid formulations Vardarajan R. Iyengar 2003-10-28 $1,083,000
6599439 Durable magnetorheological fluid compositions Vardarajan R. Iyengar 2003-07-29 $10,062,000
6592772 Stabilization of magnetorheological fluid suspensions using a mixture of organoclays Vardarajan R. Iyengar, Sally M. Yurgelevic 2003-07-15 $2,284,000
6451219 Use of high surface area untreated fumed silica in MR fluid formulation Vardarajan R. Iyengar 2002-09-17 $5,195,000
6439556 Active decoupler hydraulic mount Thomas Baudendistel, Sanjiv Tewani, Mark Long, James Eugene Dingle 2002-08-27 $2,663,000
6149832 Stabilized magnetorheological fluid compositions 2000-11-21
5667715 Magnetorheological fluids 1997-09-16
5279754 Electrorheological fluids having polypropylene carbonate adsorbed on the solid phase Elio Eusebi 1994-01-18
5122292 Methods of varying the frequency to produce predetermined electrorheological responses Elio Eusebi 1992-06-16
5122293 Method of activating and deactivating an electrorheological response at constant alternating current Elio Eusebi 1992-06-16
4544432 Method of bonding phosphated steel surfaces electrodeposited with a primer Richard K. Gray 1985-10-01