ESPIN TECHNOLOGIES, INC.

Chattanooga, TN · Clean tech · Private

Non-PFSA proton exchange membranes (PEM) manufactured using electrospun nanofiber scaffolds with embedded ionomers

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Updated Oct 23, 2026 · espintechnologies.com

Sector: Clean tech
Headquarters: Chattanooga, TN
Total capital: $11.1M

Federal grants: $1.7M; 5 awards · 2015–2023; Rank in peer group#6 of 26
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $9.4M; 15 awards · Defense, General Services A, State; Rank in Clean tech#13 of 914
Granted patents: None on recordNo USPTO grants. Applications publish after 18 months.

Capital timeline

Latest events

Jul 2023Federal grantEnergy · Phase I · Nanofiber Wipes for Decontamination of Equipment/Structures$207K
Jul 2023Federal grantEnergy · Phase I · Non-PFSA Membranes from Sulfonated Polyphenylene Composites for Electrolyzers and Fuel Cells$207K
Sep 2022Federal contractDefense · Sbir/sttr Phase II R&d$1.5M
Jul 2019Federal grantEnergy · Phase I · Nanostructured Proton Exchange Membrane$207K
Aug 2018Federal grantDefense · Phase I · Nanofiber-based Paint Overspray air filters for hexavalent chromium$50K
Sep 2017Federal contractDefense · Igf::ot::igf Broad Agency Announcement (baa) - Espin Technologies Inc.$817K
Aug 2017Federal contractDefense · Igf::ot::igf Project EW-201724 Energy Efficiency For Military Buildings Project Title: Nanofiber-based Low Energy Consuming HVAC Air Filters$769K

Show 12 earlier federal awards

Jul 2017Federal contractDefense · ::igf::ot::igf Sbir/sttr Phase II R&d$2.5M
Nov 2016Federal contractDefense · Igf::ot::igf Phase II Contract FA8651-04-C-0338$1.1M
Apr 2016Federal contractDefense · ::igf::ot::igf Sbir/sttr Phase I Research&development$140K
Sep 2015Federal grantDefense · Phase II · Corrosion Protection of High-Value Test & Evaluation Assets$1M
Mar 2014Federal contractDefense · Igf::ot::igf Ph I Research&development Proposal Title: Corrosion Protection Of High-value Test&evaluation Assets$100K
Mar 2013Federal contractDefense · SBIR Phase I - Erms # 13342014 - Proposal # A123-116-0206$100K
Sep 2012Federal contractState · Mex Fm 1901.0 Air Handler Unit Filters And Inyectors$6K
Sep 2011Federal contractDefense · Prepare Pan Nanofiber Sheets$45K
Jan 2011Federal contractDefense · SBIR Phase I A102-115-0272$836K
May 2010Federal contractDefense · Nanofiber Sheets$37K
Apr 2009Federal contractDefense · Development Of A Novel Air Filtration Media$804K
Jul 2008Federal contractDefense · Activated Carbon Nanofibers$614K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

1 record has no date or no amount, so it isn’t placed on the timeline.

Standing among 26 peers

Line = median

Clean tech · Material

Federal grants#6 · top 23%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

No founders are linked to this company yet.

Founders appear once a person is matched to the company through its own patents, grants or filings. We never infer people from social profiles.

Checked: USPTO inventors; federal award principal investigators; SEC Form D related persons · Oct 23, 2026

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What it has protected

No granted patents are on record.

USPTO usually publishes applications 18 months after filing, so recent applications may not be visible yet. Patents assigned under a different entity name won’t match.

Checked: USPTO granted patents and published applications · Oct 23, 2026

OTHER LAB, INC.Similar federal contract value in Clean tech · $12.3M in contracts
PORIFERA, INC.Similar federal contract value in Clean tech · $10M in contracts
Honolulu Seawater Air Conditioning, LLCSimilar federal contract value in Clean tech · $9.6M in contracts
LEIDEN MEASUREMENT TECHNOLOGY LLCSimilar federal contract value in Clean tech · $8.8M in contracts
ENERGY QUEST TECHNOLOGIES INCSimilar federal contract value in Clean tech · $8.4M in contracts
GENESIS SYSTEMS LLCSimilar federal contract value in Clean tech · $8.3M in contracts

Regulatory activity · Clean tech

Sector-level, not company-level

09 Jul 2026Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
02 Jul 2026Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
02 Jul 2026Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
30 Jun 2026Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
30 Jun 2026Fluoxapiprolin; Pesticide TolerancesEnvironmental Protection Agency
30 Jun 2026Chlormequat Chloride; Pesticide TolerancesEnvironmental Protection Agency

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.