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Access Sensor Technologies LLC

Clean tech · Private

AirPen: a wearable and stationary air quality monitoring device that samples particulate matter and volatile organic compounds while logging real-time sensor data

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Updated · accsensors.com

Sector
Clean tech
Total capital
$11.2M
Federal grants
$10.5M
19 awards · 2015–2025
Rank in peer group#9 of 53
Private capital raised
None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts
$692K
5 awards · Health and Human S, Commerce, NASA
Rank in Clean tech#65 of 914
Granted patents
1
3 pending · first 2022
Rank in peer group#17 of 53

Capital timeline

201520172019202120232025FEDERAL ↑EQUITY ↓Cumulative $11.2M$1.1M$1.0M$934K$961K$883K$914K
201520172019202120232025FEDERAL ↑EQUITY ↓Cumulative $11.2M$1.1M$1.0M$934K$961K

Latest events

  • Federal grantHealth and Human S · Phase I · High-Throughput Automated Air Sample Analysis Platform for Exposomics and Precision Environmental Health Research$306K
  • Federal grantHealth and Human S · Phase I · AirPen: A Wearable Sampler for Airborne Hazards in support of Disaster Response Research$305K
  • Federal grantHealth and Human S · Phase II · Citizen-Science Technology for Healthy Living at Home$622K
  • Federal grantHealth and Human S · Phase II · Validation of the UPAS+: A filter-based air sampler coupled with a suite of real-time sensors$914K
  • Federal grantHealth and Human S · Phase II · Citizen-Science Technology for Healthy Living at Home$883K
  • Federal grantHealth and Human S · Phase II · Validation of the UPAS+: A filter-based air sampler coupled with a suite of real-time sensors$961K
  • Federal grantHealth and Human S · Phase II · Validation of the UPAS+: A filter-based air sampler coupled with a suite of real-time sensors$934K
Show 17 earlier federal awards
  • Federal contractNASA · Access Sensor Technologies$78K
  • Federal grantNSF · Phase I · STTR Phase I: Advanced Microfluidic Devices for Point-of-Care COVID-19 Serological Testing$256K
  • Federal grantHealth and Human S · Phase I · AST: On Target Cards for Monitoring Superfund Sites$172K
  • Federal grantHealth and Human S · Phase I · Citizen-Science Technology for HealthyLiving at Home$225K
  • Federal grantHealth and Human S · Phase II · Low-cost Personal Sampling Pump$480K
  • Federal contractNASA · The Purpose Of This Phase III Contract Is To Proceed Along The Development Path Of A Wearable Sampler/monitor For Assessing Astronaut Exposure To Airborne Particulate Matter On The International Space Station.$83K
  • Federal contractCommerce · This Award Is For The Small Business Innovative Research (SBIR) Phase II For FY19'S Program Announcement For The Technology Partnerships Office Under Oceanic And Atmospheric Research (oar) In Silver Spring, Md. This Award Is For Proposal 18-2-067.$400K
  • Federal grantHealth and Human S · Phase II · Low-cost Personal Sampling Pump$1.0M
  • Federal grantHealth and Human S · Phase II · Low-cost Personal Sampling Pump$520K
  • Federal grantHealth and Human S · Phase II · Electrochemical Paper-Based Analytical Devices for Metal Determination$500K
  • Federal contractCommerce · This Award Is For The Small Business Innovation Research (SBIR) Phase I For FY2018'S Program Announcement For The Technology Partnerships Office Under The Office Of Atmospheric Research In Silver Spring, Md. This Award Is For Proposal 18-1-067 Entitled "development A Solar Powered Aerosol Reference Calibrator."$120K
  • Federal contractHealth and Human S · Personal Air Sampler$11K
  • Federal grantHealth and Human S · Phase II · Electrochemical Paper-Based Analytical Devices for Metal Determination$491K
  • Federal grantAgriculture · A Low-cost Pathogen Detection System Is Proposed Comprising An Incubator-reader Unit As Well As A Low-cost Consumable Paper-based Indicator Test Str$600K
  • Federal grantHealth and Human S · Phase I · Low Cost Personal Sampling Pump$150K
  • Federal grantNSF · Phase II · SBIR Phase II: Measuring Aqueous Metal Concentrations with the Chemometer$1.1M
  • Federal grantAgriculture · A Low-cost Pathogen Detection System For Food Safety$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 53 peers

Line = median

Clean tech · Device

  • Federal grants#9 · top 17%
  • Granted patents#17 · top 32%
  • Linked publications#2 · top 4%

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 4
Show all 4 patent records
  • Sampling Device For Exposure Measurement Of Particles And GasesOct 18, 2022 · US 11,474,005Granted
  • Portable Atmospheric MonitorMay 5, 2022 · Application 17602147Pending
  • Portable Atmospheric MonitorApplication PCTUS2020027524Pending
  • Sampling Device For Exposure Measurement Of Particles And GasesApplication PCTUS2019033850Pending

Recent research by its founders

  • A national crowdsourced network of low-cost fine particulate matter and aerosol optical depth monitors: results from the 2021 wildfire season in the United States20235 cites
  • Author response for "A national crowdsourced network of low-cost fine particulate matter and aerosol optical depth monitors: results from the 2021 wildfire season in the United States"20230 cites
  • Multinational prediction of household and personal exposure to fine particulate matter (PM2.5) in the PURE cohort study202127 cites

Related companies, and why

Regulatory activity · Clean tech

Sector-level, not company-level

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 . SBIR and STTR awards through .