Quidnet Energy
Geomechanical long-duration energy storage system using subsurface pressure mechanics
- Sector
- Energy
- Headquarters
- Houston, TX
- Latest Form D
- $10M, Jun 2020
- Total capital
- $18M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $18M
- 2 Form D · last Jun 2020
- 77 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 13
- 22 pending · first 2016
- Rank in peer group#12 of 166
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 2nd filing$10M
- Private capital raisedForm D · SEC · 1st filing$8M
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 166 peers
Line = medianEnergy · System
- Granted patents#12 · top 7%
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- Howard SchmidtResearcherDirectorLinked by 6 patents
- Aaron MandellExecutive OfficerNamed in SEC Form D filings
- Christina KarapatakiDirectorNamed in SEC Form D filings
- Dagong ZhouExecutive Officer, DirectorNamed in SEC Form D filings
- Matthew NordanDirectorNamed in SEC Form D filings
- Michael BiddleDirectorNamed in SEC Form D filings
What it has protected
USPTO · 13 granted of 35- PendingSystem And Method To Fracture And Seal Subterranean FormationsUSPTOApplication 19205646
- PendingSystem Of Expanding The Storage Capability For Geomechanical Energy StorageUSPTOApplication 19200801
- PendingMethod To Measure Fracture WidthUSPTOApplication 19174598
Show all 35 patent records
- System And Method To Fracture And Seal Subterranean FormationsNov 20, 2025 · Application 19205646Pending
- System Of Expanding The Storage Capability For Geomechanical Energy StorageNov 13, 2025 · Application 19200801Pending
- Method To Measure Fracture WidthOct 30, 2025 · Application 19174598Pending
- Subterranean Fluid Storage And Method For Energy And Waste ManagementSep 11, 2025 · Application 19071613Pending
- Method for Borehole CompletionJul 10, 2025 · Application 19095309Pending
- Hydraulic Geofracture Energy Storage System and Associated MethodsJun 17, 2025 · US 12,331,622Granted
- Geothermal System and MethodApr 15, 2025 · US 12,276,443Granted
- Method and Materials for Manipulating Hydraulic Fracture GeometryApr 1, 2025 · US 12,264,569Granted
- Method for Borehole CompletionApr 1, 2025 · US 12,264,566Granted
- Method for Generating Self-Propped Hydraulic FracturesFeb 6, 2025 · Application 18923257Pending
- Mitigation of Fluid Loss from Underground Reservoirs by Electrostatically-Driven Assembly of ParticlesDec 24, 2024 · US 12,173,227Granted
- Energy Storage System for Overpressure EnvironmentsDec 19, 2024 · Application 18706320Pending
- Method for Generating Self-Propped Hydraulic FracturesOct 22, 2024 · US 12,123,293Granted
- Reversible Reciprocating PumpAug 22, 2024 · Application 18648951Pending
- Hydraulic Geofracture Energy Storage System with DesalinationMar 12, 2024 · US 11,927,085Granted
- Method for Modelling Geomechanical Pumped Storage in Horizontal Fluid-Filled LensesNov 23, 2023 · Application 18077033Pending
- Method and Materials for Manipulating Hydraulic Fracture GeometryOct 24, 2023 · US 11,795,802Granted
- Method and Apparatus for Fracture Width MeasurementNov 10, 2022 · Application 17741369Pending
- Reversible Reciprocating PumpNov 10, 2022 · Application 17623480Pending
- Method and Materials for Manipulating Hydraulic Fracture GeometryMay 10, 2022 · US 11,326,435Granted
- Reversible Reciprocating PumpApr 28, 2022 · Application 16913801Pending
- Hydraulic Geofracture Energy Storage System with DesalinationSep 21, 2021 · US 11,125,065Granted
- Hydraulic Geofracture Energy Storage System with DesalinationJun 2, 2020 · US 10,669,471Granted
- Hydraulic Geofracture Energy Storage System with DesalinationNov 13, 2018 · US 10,125,035Granted
- Hydraulic Geofracture Energy Storage System with DesalinizationNov 1, 2016 · US 9,481,519Granted
- Reversible Reciprocating PumpApplication PCTUS2020039935Pending
- Hydraulic Geofracture Energy Storage System With DesalinationApplication PCTUS2017058407Pending
- Hydraulic Geofracture Energy Storage System With DesalinazationApplication PCTUS2015038363Pending
- Method And Apparatus For Fracture Width MeasurementApplication PCTUS2022028635Pending
- Energy Storage System For Overpressure EnvironmentsApplication PCTUS2023031595Pending
- Geothermal System And MethodApplication PCTUS2022017366Pending
- System and Method to Store Fuel Underground to Feed Power PlantsApplication 63562553Pending
- Mitigation Of Fluid Loss From Underground Reservoirs By Electrostatically-driven Assembly Of ParticlesApplication PCTUS2022017367Pending
- Method Of Expanding The Storage Capability For Geomechanical Energy StorageApplication 63644542Pending
- Hydraulic Geofracture Energy Storage System And Associated MethodsApplication PCTUS2024052190Pending
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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 .