Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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SM Rahmat ULLAH — 7 Patents

DIDionex: 6 patents #17 of 171Top 10%
Fremont, CA: #2,381 of 9,298 inventorsTop 30%
California: #82,707 of 386,348 inventorsTop 25%
Overall (All Time): #714,767 of 4,157,543Top 20%
7 Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
11123655 Apparatus for parallel accelerated solvent extraction Kannan Srinivasan 2021-09-21
10948466 Flow control in an electrolytic reagent concentrator for ion chromatography Kannan Srinivasan, Mrinal Sengupta 2021-03-16
10746639 Method and device to extract an analyte from a sample with gas assistance Kannan Srinivasan 2020-08-18
10571374 Method and device to extract an analyte from a sample with gas assistance Kannan Srinivasan 2020-02-25
9440166 Method and device to extract an analyte from a sample with gas assistance Kannan Srinivasan 2016-09-13
9375697 Extraction cell assembly with quick-release seal removal Michael John McAdams, Kannan Srinivasan 2016-06-28
9063045 Sample pretreatment and extraction Kannan Srinivasan, Bruce Richter, Christopher A. Pohl, Brett Murphy, Brian Dorich 2015-06-23