Achates Power Inc
Opposed-piston internal combustion engines with advanced combustion architecture
- Sector
- Energy
- Headquarters
- SAN DIEGO, CA
- Founded
- 2007
- Latest Form D
- $29.8M, Oct 2017
- Total capital
- $53.1M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $53.1M
- 3 Form D · last Oct 2017
- 109 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 31
- 9 pending · first 2020
- Rank in peer group#4 of 151
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 3rd filing$29.8M
- Private capital raisedForm D · SEC · 2nd filing$11.2M
- Private capital raisedForm D · SEC · 1st filing$12.1M
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 151 peers
Line = medianEnergy · Device
- Granted patents#4 · top 3%
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
From SEC Form D filings- David JohnsonExecutive Officer, DirectorNamed in SEC Form D filings
- David PrendDirectorNamed in SEC Form D filings
- Eric HaskelDirectorNamed in SEC Form D filings
- Frank MacherDirectorNamed in SEC Form D filings
- Gary ConvisDirectorNamed in SEC Form D filings
- Greg McAdooDirectorNamed in SEC Form D filings
Show all 14 people
- Hal HarveyDirectorNamed in SEC Form D filings
- James LemkeDirectorNamed in SEC Form D filings
- Jamie McJunkinDirectorNamed in SEC Form D filings
- John KoszewnikExecutive Officer, DirectorNamed in SEC Form D filings
- John WallDirectorNamed in SEC Form D filings
- K Michael GarrettExecutive OfficerNamed in SEC Form D filings
- Robert MurashigeExecutive OfficerNamed in SEC Form D filings
- Shauna McIntyreExecutive OfficerNamed in SEC Form D filings
What it has protected
USPTO · 31 granted of 40- GrantedPiston With A Biaxial Bearing For An Opposed-piston EngineUSPTOUS 12,442,328
- GrantedHydrogen Opposed-piston EngineUSPTOUS 12,338,763
- GrantedPiston Assembly With Opposing Injection Regions For An Opposed-piston EngineUSPTOUS 12,320,312
Show all 40 patent records
- Piston With A Biaxial Bearing For An Opposed-piston EngineOct 14, 2025 · US 12,442,328Granted
- Hydrogen Opposed-piston EngineJun 24, 2025 · US 12,338,763Granted
- Piston Assembly With Opposing Injection Regions For An Opposed-piston EngineJun 3, 2025 · US 12,320,312Granted
- Parent Bore Cylinder Block Of An Opposed-piston EngineApr 29, 2025 · US 12,286,940Granted
- Exhuast Catalyst Light-off In An Opposed-piston EngineAug 6, 2024 · US 12,055,111Granted
- Hybrid Drive System With An Opposed-piston, Internal Combustion EngineMay 14, 2024 · US 11,982,225Granted
- Thermal Management Of Aftertreatment Devices Of Opposed-Piston Engines Under Motoring ConditionsApr 9, 2024 · US 11,952,951Granted
- Hydrogen Opposed-Piston EngineMar 19, 2024 · US 11,933,215Granted
- Hydrogen-powered Opposed-piston EngineFeb 13, 2024 · US 11,898,448Granted
- Exhaust Catalyst Light-off In An Opposed-piston EngineNov 14, 2023 · US 11,815,042Granted
- Piston For An Opposed-piston EngineOct 3, 2023 · US 11,773,769Granted
- Connecting Rod AssemblyApr 18, 2023 · US 11,629,751Granted
- Cylinder Bore Surface Structures For An Opposed-piston EngineMar 7, 2023 · US 11,598,211Granted
- Hybrid Drive System With An Opposed-piston, Internal Combustion EngineMar 7, 2023 · US 11,598,259Granted
- Air Handling In A Heavy-duty Opposed-piston EngineJul 26, 2022 · US 11,396,841Granted
- Control Of An Opposed-piston Engine With A Mass Airflow Sensor Located After A Charge Air CoolerJul 12, 2022 · US 11,384,681Granted
- Fuel Injector Mounting Assembly For An Opposed-piston EngineMay 10, 2022 · US 11,326,569Granted
- Cylinder For Opposed-Piston EnginesApr 12, 2022 · US 11,300,071Granted
- Exhaust Catalyst Light-off In An Opposed-piston EngineFeb 8, 2022 · US 11,242,809Granted
- Cylinder Cooling In Opposed-piston EnginesOct 26, 2021 · US 11,156,184Granted
- Exhaust Manifold Constructions Including Thermal Barrier Coatings For Opposed-piston EnginesAug 24, 2021 · US 11,098,634Granted
- Parent Bore Cylinder Block Of An Opposed-piston EngineAug 5, 2021 · Application 17213008Pending
- Parent Bore Cylinder Block Of An Opposed-piston EngineAug 5, 2021 · Application 17213039Pending
- Intake Chamber Air Diffusing Feature In An Opposed-piston EngineJun 29, 2021 · US 11,047,334Granted
- Dual-crankshaft, Opposed-piston Engine With Mechanically Uncoupled CrankshaftsApr 29, 2021 · Application 16661334Pending
- Parent Bore Cylinder Block Of An Opposed-piston EngineApr 27, 2021 · US 10,989,136Granted
- Air Handling System Constructions With Externally-assisted Boosting For Turbocharged Opposed-piston EnginesMar 9, 2021 · US 10,941,733Granted
- Ported Engine Constructions With Low-tension Compression SealsMar 2, 2021 · US 10,935,134Granted
- Piston Cooling For Opposed-piston EngineDec 22, 2020 · US 10,871,099Granted
- Opposed-piston Engine In A Light-duty TruckDec 15, 2020 · US 10,865,746Granted
- Main Bearings Of Opposed-piston Engines With Two CrankshaftsNov 17, 2020 · US 10,837,357Granted
- Fuel Limiter For A Uniflow-scavenged, Two-stroke Cycle, Opposed-piston EngineJul 16, 2020 · Application 16830622Pending
- Piston Assembly With Opposing Injection Regions For An Opposed-piston EngineJun 18, 2020 · Application 16790552Pending
- Exhaust Plenum Chamber Constructions Including Thermal Barrier Coatings For Opposed-piston EnginesJun 11, 2020 · Application 16782918Pending
- Cylinder Liner For An Opposed-piston EngineJun 9, 2020 · US 10,677,188Granted
- Thermal Management Of Aftertreatment Devices Of Opposed-piston Engines Under Motoring ConditionsJun 4, 2020 · Application 16735247Pending
- Robust Supercharger For Opposed-piston Engines Equipped With Exhaust Gas RecirculationMay 21, 2020 · Application 16735526Pending
- Multi-layered Piston Crown For Opposed-piston EnginesApr 28, 2020 · US 10,634,091Granted
- Mass Airflow Sensor Monitoring Using Supercharger Airflow Characteristics In An Opposed-piston EngineMar 24, 2020 · US 10,598,104Granted
- Supercharger Protection In An Opposed-piston Engine With EgrMar 19, 2020 · Application 16663756Pending
Related companies, and why
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- RocketFrac Services Ltd.Similar federal contract value in Energy · null in contracts
- ESS Tech, Inc.Similar federal contract value in Energy · null in contracts
- Perpetua Power Source Technologies IncSimilar federal contract value in Energy · null in contracts
- Canada Lithium Corp.Similar federal contract value in Energy · null in contracts
Regulatory activity · Energy
- Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
- List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16Nuclear Regulatory Commission
- Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
- Fluoxapiprolin; 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 . SBIR and STTR awards through .