Patent assignee · US · COMPANY

Mainspring Energy, Inc.

44Patents
44Active
44Granted
57Portfolio score

Filing activity: Aug 9, 2018 → Apr 30, 2024

Most-cited patents

PatentTitleAreaCited byStatus
US11404937B2 Integrated linear generator system Electricity 6 Active
US10927953B2 Piston seal with solid lubricant applicator Mechanical Engineering; Lighting; Heating 4 Active
US11053876B2 Control of piston trajectory in a linear generator Mechanical Engineering; Lighting; Heating 3 Active
US10731759B2 Reinforced sealing rings Mechanical Engineering; Lighting; Heating 3 Active
US10975966B2 Piston sealing ring assembly having a gap cover element Mechanical Engineering; Lighting; Heating 3 Active
US11346445B2 Piston sealing ring assemblies Mechanical Engineering; Lighting; Heating 2 Active
US11339735B2 Control of piston trajectory in a linear generator Mechanical Engineering; Lighting; Heating 2 Active
US11193588B2 Reinforced sealing rings Mechanical Engineering; Lighting; Heating 2 Active
US11578646B2 Energy storage and conversion in linear generators Electricity 2 Active
US10738688B2 Energy storage and conversion in free-piston combustion engines Electricity 2 Active
US11211885B2 Auto-braking for an electromagnetic machine Electricity 2 Active
US10731586B2 Control of piston trajectory in a free-piston combustion engine Mechanical Engineering; Lighting; Heating 2 Active
US11616428B2 Linear electromagnetic machine system Electricity 2 Active
US11236827B2 Piston-integrated gap cover Mechanical Engineering; Lighting; Heating 1 Active
US11767915B2 Piston sealing ring assembly having a gap cover element Mechanical Engineering; Lighting; Heating 1 Active
US11530691B2 Sealing ring assemblies configured for pressure locking Mechanical Engineering; Lighting; Heating 1 Active
US10985641B2 Linear electromagnetic machine system with bearing housings having pressurized gas Electricity 1 Active
US11739705B2 Control of piston trajectory in a linear generator Mechanical Engineering; Lighting; Heating 1 Active
US11976730B2 Manifold interface seal Mechanical Engineering; Lighting; Heating 0 Active
US12027956B2 Integrated linear generator system Electricity 0 Active
US11873906B2 Springs for piston ring biasing Mechanical Engineering; Lighting; Heating 0 Active
US11525391B2 High-efficiency linear generator Emerging Cross-Sectional Technologies 0 Active
US12283911B2 Auto-braking for an electromagnetic machine Electricity 0 Active
US11867116B2 Energy storage and conversion in linear generators Electricity 0 Active
US12170501B2 Core synchronization for linear generators Electricity 0 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.