Inventor
ROELLE MATTHEW
US22 patents
⚠️ This page may combine multiple inventors who share the name “ROELLE MATTHEW”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MAINSPRING ENERGY INC
13 patentsUS11339735B2May 24, 2022
Control of piston trajectory in a linear generator
MAINSPRING ENERGY INC4 citations83
US11053876B2Jul 6, 2021
Control of piston trajectory in a linear generator
MAINSPRING ENERGY INC5 citations83
US11211885B2Dec 28, 2021
Auto-braking for an electromagnetic machine
MAINSPRING ENERGY INC4 citations82
US12283911B2Apr 22, 2025
Auto-braking for an electromagnetic machine
MAINSPRING ENERGY INC2 citations73
US11739705B2Aug 29, 2023
Control of piston trajectory in a linear generator
MAINSPRING ENERGY INC2 citations72
US11578646B2Feb 14, 2023
Energy storage and conversion in linear generators
MAINSPRING ENERGY INC2 citations72
US11652432B2May 16, 2023
Auto-braking for an electromagnetic machine
MAINSPRING ENERGY INC2 citations71
US12170501B2Dec 17, 2024
Core synchronization for linear generators
MAINSPRING ENERGY INC2 citations65
US12473855B2Nov 18, 2025
Energy storage and conversion in linear generators
MAINSPRING ENERGY INC0 citations62
US12209548B2Jan 28, 2025
Control of piston trajectory in a linear generator
MAINSPRING ENERGY INC0 citations62
US11867116B2Jan 9, 2024
Energy storage and conversion in linear generators
MAINSPRING ENERGY INC0 citations62
US11352947B2Jun 7, 2022
Energy storage and conversion in linear generators
MAINSPRING ENERGY INC0 citations62
US12587118B2Mar 24, 2026
Core synchronization for linear generators
MAINSPRING ENERGY INC0 citations55
ETAGEN INC
9 patentsUS9657675B1May 23, 2017
Control of piston trajectory in a free-piston combustion engine
ETAGEN INC35 citations97
US10738688B2Aug 11, 2020
Energy storage and conversion in free-piston combustion engines
ETAGEN INC3 citations83
US10731586B2Aug 4, 2020
Control of piston trajectory in a free-piston combustion engine
ETAGEN INC4 citations83
US10408150B2Sep 10, 2019
Control of piston trajectory in a free-piston combustion engine
ETAGEN INC8 citations83
US10156198B2Dec 18, 2018
Control of piston trajectory in a free-piston combustion engine
ETAGEN INC4 citations83
US9719415B2Aug 1, 2017
Energy storage and conversion in free-piston combustion engines
ETAGEN INC5 citations83
US10715068B2Jul 14, 2020
Auto-braking for an electromagnetic machine
ETAGEN INC5 citations82
US10404199B2Sep 3, 2019
Auto-braking for an electromagnetic machine
ETAGEN INC4 citations82
US10190490B2Jan 29, 2019
Energy storage and conversion in free-piston combustion engines
ETAGEN INC0 citations51