ADELPHI TECHNOLOGY INC

Redwood City, CA · Defense · Private

Ultraportable battery-operated Associated Particle Imaging neutron generator for detection and characterization of special nuclear materials

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Updated Oct 23, 2026 · adelphitech.com

Sector: Defense
Headquarters: Redwood City, CA
Latest Form D: $2.6M, May 2026
Total capital: $23.8M

Federal grants: $11.8M; 23 awards · 2017–2024; Rank in peer group#32 of 164
Private capital raised: $2.6M; 1 Form D · last May 2026; 5 months since last filing
Federal contracts: $9.4M; 17 awards · Defense, Homeland Security, Agriculture; Rank in Defense#402 of 1442
Granted patents: 11; 5 pending · first 2017; Rank in peer group#16 of 164

Capital timeline

Latest events

May 2026Private capital raisedForm D · SEC · 1st filing$2.6M
Feb 2026Federal contractAgriculture · Repair Of Associated Particle Imaging Neutron Generator (model DT108-API)$18K
Sep 2025Federal contractHealth and Human S · A Compact Source For Neutron Capture Therapy For Pontine Glioma.$500K
May 2025Federal contractDefense · This Requirement Is To Procure A High Output Neutron Generator For The Nuclear Engineering Department Of The Air Force Institute Of Technology (afit).$405K
Aug 2024Federal contractHomeland Security · New Research & Development Contract For Adelphi Technolgy Inc.$2.3M
Jun 2024Federal contractDefense · Develop A Compact Neutron Generator$164K
May 2024Federal grantDefense · Phase I · Develop A Compact Neutron Generator$164K

Show 34 earlier federal awards

Aug 2023Federal grantEnergy · Phase II · Ultra-portable Associated Particle Imaging (API) neutron source$1.1M
Aug 2023Federal contractTransportation · Small Business Innovation Research (SBIR) FY22 Phase 2 For Compact Broadband Leak Detector For Autonomous Vehicles Submitted Against Dot SBIR Topic 22-PH2$997K
Apr 2023Federal grantEnergy · Phase II · Lab-Based Small Angle Neutron Scattering Instrument$1.1M
Feb 2023Federal grantEnergy · Phase I · Aberration-corrected High Frequency RF Flipper for High-Resolution Neutron Spectroscopy$200K
Feb 2023Federal grantEnergy · Phase I · Compact, portable single-crystal neutron diffractometer$207K
Jul 2022Federal contractTransportation · FY22 SBIR PH1 On Topic 22-PH2 Autonomous Vehicle Leak Detectors$200K
Feb 2022Federal grantEnergy · Phase I · Compact accelerator SANS instrument, Neutron generator SANS instrument$200K
Feb 2022Federal grantEnergy · Phase I · Universal Neutron Spin Flipper$200K
Jan 2022Federal contractHealth and Human S · SBIR Innovative Concept Award - Detection, Diagnosis, Treatment, Prevention And Research Of Pediatric Cancers And/or Rare Cancers.$300K
Aug 2021Federal grantEnergy · Phase II · Ultra-Portable API Neutron Source$1.1M
May 2021Federal grantEnergy · Phase II · Multiplexing Focusing Analyzer for Efficient Stress-Strain Measurements$1.1M
Feb 2021Federal grantEnergy · Phase I · Field Analyzer for Soil and Water Emissions$250K
Feb 2021Federal grantEnergy · Phase I · Polarization Manipulation and Correction Device$200K
Jun 2020Federal grantEnergy · Phase I · Ultra-Portable API Neutron Source$200K
Apr 2020Federal grantEnergy · Phase II · Grating-Based Imaging-Scattering with Portable Neutron Generator$1.5M
Feb 2020Federal grantEnergy · Phase I · Multiplexing Focusing Analyzer for Efficient Stress-Strain Measurements$200K
Aug 2019Federal grantEnergy · Phase II · Portable Advanced Neutron Imaging Capability$1M
Aug 2019Federal contractAgriculture · Associated Particle Imaging Neutron Generator.$178K
May 2019Federal grantEnergy · Phase II · Wide Angle Neutron Spin Echo Device$1.0M
Feb 2019Federal grantEnergy · Phase I · Grating-Based Imaging-Scattering with Portable Neutron Generator$225K
Dec 2018Federal grantDefense · Phase I · Integration of Living Cells in Nanospring Networks for Multisensory Odor Detector$150K
Jul 2018Federal grantEnergy · Phase I · Compact API system using a semiconductor alpha detector$150K
May 2018Federal grantEnergy · Phase II · Development of a superconducting RF flipper$1M
Apr 2018Federal grantEnergy · Phase I · Axisymmetric and Focusing Analyzers to Enable Efficient Powder and Residual Stress Neutron Diffractometers$150K
Apr 2018Federal grantEnergy · Phase I · Wide Angle Neutron Spin Echo Device$150K
Feb 2017Federal grantEnergy · Phase I · Neutron optical device to measure mesoscopic space and time correlations and eliminate quasi-elastic scattering from SANS$155K
Dec 2016Federal contractDefense · Igf::ot::igf The Contractor Will Conduct Research In Support Of The Intense And Compact Neutron Sources Two (ICONS2)PROGRAM.$1.4M
Jul 2016Federal contractHomeland Security · Igf::ot::igf SBIR Phase I Award$150K
Mar 2015Federal contractDefense · Igf::ot::igf Intense And Compact Neutron Sources (icons) Program$1.2M
Dec 2013Federal contractDefense · Power Supply Upgrade$58K
Sep 2010Federal contractDefense · Neutron Generator, Model DD-108$98K
Sep 2010Federal contractHomeland Security · Baa Fy 2010 New Starts This Pr Commits $3 M Towards Tar's Exploratory Research Baa. Cotr: Mark Wrobel (202) 254-7629 Mark.wrobel@dhs.gov Tar Spend Plan Line: 104$600K
Jan 2008Federal contractDefense · SBIR I$100K
Sep 2007Federal contractDefense · Detection Of Improvied Explosives Devices$730K

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.

Federal first

224months

from ADELPHI TECHNOLOGY INC’s first federal award to its first private round.

First federal award · Sep 2007: Defense · $730K
First Form D · May 2026: $2.6M · 1st Form D
Awards before first raise: 40 awards

An association in public records, not a cause or a prediction.

Standing among 164 peers

Line = median

Defense · Device

Federal grants#32 · top 20%
Granted patents#16 · top 10%

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

Researcher links verified by same-company patents and grants

David Lowndes WilliamsResearcherExecutive OfficerLinked by $3.6M in grants as PI

What it has protected

USPTO · 11 granted of 16

Jul 2, 2026PendingPulsed Ion SourceUSPTOApplication 19006646
Feb 7, 2023GrantedAn Ion Source Having A Magnetic Field Translatable Along An Axis Of The SourceUSPTOUS 11,574,788
Aug 17, 2021GrantedNeutron Source with Beam Shaping Apparatus for Cancer TreatmentUSPTOUS 11,090,509

Show all 16 patent records

Pulsed Ion SourceJul 2, 2026 · Application 19006646Pending
An Ion Source Having A Magnetic Field Translatable Along An Axis Of The SourceFeb 7, 2023 · US 11,574,788Granted
Neutron Source with Beam Shaping Apparatus for Cancer TreatmentAug 17, 2021 · US 11,090,509Granted
Neutron Source with Beam Shaping Apparatus for RadiographyMar 23, 2021 · US 10,955,365Granted
Neutron Source for Neutron Capture TherapyDec 29, 2020 · US 10,874,881Granted
Neutron Source for Neutron Capture TherapyDec 22, 2020 · US 10,870,020Granted
Neutron Source for Neutron Capture TherapyDec 1, 2020 · US 10,850,131Granted
Neutron Source for Neutron Capture TherapyDec 1, 2020 · US 10,850,130Granted
Neutron Source for Neutron Capture TherapyOct 13, 2020 · US 10,799,722Granted
Neutron Source for Neutron Capture TherapyAug 11, 2020 · US 10,737,121Granted
Neutron Source for Neutron Capture TherapyMar 31, 2020 · US 10,603,516Granted
Neutron Source for Neutron Capture TherapyMay 2, 2017 · US 9,636,524Granted
Miniature Ion SourceApplication PCTUS2022045059Pending
Neutron Source For Netrun Capture TherapyApplication PCTUS2019057884Pending
High Flux Neutron SourceApplication PCTUS2012045565Pending
Neutron Source For Neutron Capture TherapyApplication PCTUS2012044194Pending

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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.