Tau Motors, Inc.
Software-defined power conversion platform for electrification
- Sector
- Energy
- Headquarters
- SAN FRANCISCO, CA
- Founded
- 2017
- Latest Form D
- $750K, Mar 2018
- Total capital
- $750K
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $750K
- 1 Form D · last Mar 2018
- 104 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 22
- 18 pending · first 2021
- Rank in peer group#1 of 19
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 1st filing$750K
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 19 peers
Line = medianEnergy · Platform
- Granted patents#1 · top 5%
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- Jonathan Wesley EllmanDirectorNamed in SEC Form D filings
- Walter Wesley Pennington IIIExecutive Officer, DirectorNamed in SEC Form D filings
What it has protected
USPTO · 22 granted of 40- PendingWirelessly Transferring Power Within An Electric Machine With Actively Rectified Rotor WindingsUSPTOApplication 19680903
- PendingElectric MotorsUSPTOApplication 19682946
- GrantedDrive UnitUSPTOUS D1,132,248
Show all 40 patent records
- Wirelessly Transferring Power Within An Electric Machine With Actively Rectified Rotor WindingsSep 17, 2026 · Application 19680903Pending
- Electric MotorsSep 17, 2026 · Application 19682946Pending
- Drive UnitJun 30, 2026 · US D1,132,248Granted
- Electric MotorsJun 23, 2026 · US 12,665,453Granted
- Wirelessly Transferring Power Within An Electric Machine With Actively Rectified Rotor WindingsJun 23, 2026 · US 12,665,474Granted
- Wirelessly Transferring Power Within An Electric Machine Having Ac And Dc Rotor CoilsJun 9, 2026 · US 12,651,992Granted
- Wirelessly Transferring Power Within An Electric Machine Having Ac And Dc Rotor CoilsMay 14, 2026 · Application 19441534Pending
- Power Distribution Within An Electric Machine With Rectified Rotor WindingsMar 17, 2026 · US 12,580,503Granted
- Power Distribution Within An Electric Machine With Rectified Rotor WindingsMar 12, 2026 · Application 19387170Pending
- Power InverterFeb 24, 2026 · US D1,114,734Granted
- Electric MotorOct 21, 2025 · US 12,451,787Granted
- Electric MotorsJun 5, 2025 · Application 19042429Pending
- Power Distribution Within An Electric MachineApr 17, 2025 · Application 19002080Pending
- Electric MotorsMar 11, 2025 · US 12,249,874Granted
- Power Distribution Within An Electric MachineJan 14, 2025 · US 12,199,482Granted
- System And Method For Controlling A MotorJan 2, 2025 · Application 18809909Pending
- Dynamically Configurable Hardware System For Motor System And Method For Operating SameDec 5, 2024 · Application 18776810Pending
- System And Method For Controlling A MotorOct 1, 2024 · US 12,107,522Granted
- Dynamically Configurable Hardware System For Motor System And Method For Operating SameAug 27, 2024 · US 12,074,546Granted
- Power Distribution Within An Electric Machine With Rectified Rotor WindingsJun 4, 2024 · US 12,003,144Granted
- Electric MotorsApr 2, 2024 · US 11,949,289Granted
- Power Distribution Within An Electric MachineMar 19, 2024 · US 11,936,255Granted
- Electric MotorJan 9, 2024 · US 11,870,319Granted
- System And Method For Thermal Management Of Electronic Machines Using Coolant CansDec 7, 2023 · Application 18033775Pending
- Electric Motors Having Flux Shields For Motor PolesNov 28, 2023 · US 11,831,199Granted
- Power Distribution Within An Electric MachineSep 12, 2023 · US 11,757,338Granted
- Power Distribution Within An Electric Machine With Rectified Rotor WindingsApr 25, 2023 · US 11,637,481Granted
- Electric Motors Having Flux BarriersApr 4, 2023 · US 11,621,612Granted
- Electric MotorsJan 24, 2023 · US 11,563,347Granted
- Electric MotorSep 20, 2022 · US 11,451,124Granted
- Electric Motor With Flux BarriersJun 22, 2021 · US 11,043,879Granted
- Electric MotorsApplication PCTUS2021013750Pending
- Motors Including Coolant CansApplication 63106096Pending
- Wirelessly Transfering Power Within An Electric Machine With Rectified Rotor WindingsApplication 63059930Pending
- Wirelessly Transfering Power Within An Electric MachineApplication 63059929Pending
- Synchronous Electric MotorsApplication 62962159Pending
- Electric MotorsApplication PCTUS2019045456Pending
- Electric MotorApplication PCTUS2019033811Pending
- Electric MotorsApplication 62715386Pending
- Electric MotorApplication 62675207Pending
Related companies, and why
- ROCKETRUCK INCSimilar federal contract value in Energy · null in contracts
- Arisdyne Systems IncSimilar federal contract value in Energy · null in contracts
- One Three Energy, Inc.Similar federal contract value in Energy · null in contracts
- NexGen Power Systems, Inc.Similar federal contract value in Energy · null in contracts
- NUSCALE POWER INCSimilar federal contract value in Energy · null in contracts
- PECOS WIND POWER INCSimilar 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 .