API Engineering LLC

Defense · Private

Oxygen generation system for fuel cells using thermal decomposition of lithium chlorate solution, integrated with solid oxide fuel cells for unmanned undersea vehicles

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Updated Oct 23, 2026 · apiengr.com

Sector: Defense
Total capital: $3.6M

Federal grants: $1.4M; 1 award · 2014; Rank in peer group#45 of 66
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $2.2M; 4 awards · Defense; Rank in Defense#669 of 1442
Granted patents: 1; first 2016; Rank in peer group#21 of 66

Capital timeline

Latest events

Sep 2018Federal contractDefense · Disassemble, Crate And Ship The Oxygen Generation Test System Under N00014-15-C-0074, Part Number 2015-000-5 As Described In Statement Of Work-shipment Of Oxygen Generation Test System, Attachment 1$25K
Dec 2014Federal grantDefense · Phase II · Thermal/Mechanical Aqueous Chlorate Solution Oxygen Generator$1.4M
Dec 2014Federal contractDefense · Igf::ct::igf SBIRSOL2014.1$1.3M
Sep 2011Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences (except Biotechnology)$750K
May 2010Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences (except Biotechnology)$100K

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.

Standing among 66 peers

Line = median

Defense · System

Federal grantsBelow median
Granted patents#21 · top 32%

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

USPTO · 1 granted of 1

Oct 11, 2016GrantedPowered Cargo Rack For Tall VehiclesUSPTOUS 9,463,748

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SensoDX II, LLCSimilar federal contract value in Defense · $2.1M in contracts

Regulatory activity · Defense

Sector-level, not company-level

11 Jun 2026Danger Zone; Waters of Carr Creek and Whitehall Bay in the Vicinity of the Naval Support Activity AnnapolisEngineers Corps
13 Mar 2026Federal Acquisition Regulation; Federal Acquisition Circular 2026-01; IntroductionNational Aeronautics and Space Administration
13 Mar 2026Federal Acquisition Regulation: Trade Agreements ThresholdsNational Aeronautics and Space Administration
13 Mar 2026Federal Acquisition Regulation; Federal Acquisition Circular 2026-01; Small Entity Compliance GuideNational Aeronautics and Space Administration
27 Aug 2025Federal Acquisition Regulation; Federal Acquisition Circular 2025-06; Small Entity Compliance GuideNational Aeronautics and Space Administration
27 Aug 2025Federal Acquisition Regulation; Federal Acquisition Circular 2025-06; IntroductionNational Aeronautics and Space Administration

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.