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Caporus Technologies

High energy density dielectric film for capacitors

Raised to date

$3.5M

of $5M offered across 1 Form D filing

Still open
$1.5M
Investors
4
Last filed
Aug 14, 2026

About

Caporus Technologies develops and manufactures advanced thin-film dielectric materials for high energy density capacitors used in power conversion and energy storage systems. Its patented Nanoscale Lamellar Porosity (NLP) dielectric is designed to hold up at the higher voltages and temperatures that next-generation power electronics require, combining ceramic-like high-temperature performance with the stability and processability of film capacitors. The company is scaling production through a roll-to-roll manufacturing process and sells capacitive film to capacitor manufacturers and power equipment OEMs. It was founded by Kevin O'Connor and incubated at Argonne National Laboratory through the Chain Reaction Innovations program.

Nanoscale Lamellar Porosity (NLP) dielectric technology, patented in the US, Japan and China, that delivers ceramic-class high-temperature and high-voltage performance in a roll-to-roll manufacturable polymer film format.

Funding

  • EquityFiled Aug 14, 2026Form D
    $3.5M/ $5M

Product

NLP capacitor dielectric film

Advanced materials / electronic components

A thin-film capacitor dielectric built around a nanoscale porous lamellar structure that stores more energy per unit volume than conventional polymer films, produced at volume via roll-to-roll processing.

  • Nanoscale Lamellar Porosity (NLP) dielectric structure
  • High energy density capacitive storage
  • Ceramic-like high-temperature performance with film-capacitor processability

Built for

Capacitor manufacturers and power equipment OEMs building medium- to high-voltage power conversion systems for electric vehicles, industrial motor drives, distributed energy resources and grid-scale energy storage

People on file