THIOZEN INC.

Belmont, MA · Founded 2020 · Energy · Private

Chemical cycle process that converts hydrogen sulfide waste into hydrogen gas

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Updated · thiozen.com

Sector
Energy
Headquarters
Belmont, MA
Founded
2020
Latest Form D
$3M, Jun 2021
Total capital
$4.5M
Federal grants
$1.5M
2 awards · 2021–2023
Rank in peer group#10 of 11
Private capital raised
$3M
1 Form D · last Jun 2021
65 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
0
14 pending

Capital timeline

202120222023FEDERAL ↑EQUITY ↓Cumulative $4.5M$254K$1.2M1st Form D$3M
202120222023FEDERAL ↑EQUITY ↓Cumulative $4.5M$254K$1.2M1st Form D$3M

Latest events

  • Federal grantNSF · Phase II · SBIR Phase II:Hydrogen from Hydrogen Sulfide$1.2M
  • Federal grantNSF · Phase I · SBIR Phase I:Hydrogen from Hydrogen Sulfide$254K
  • Private capital raisedForm D · SEC · 1st filing$3M

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 11 peers

Line = median

Energy · System

  • Federal grantsBelow median

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
  • Ryan GillisResearcherExecutive Officer, DirectorLinked by $1.5M in grants as PI
  • Ajay H. BawaExecutive OfficerNamed in SEC Form D filings
  • Massimiliano H. PieriDirectorNamed in SEC Form D filings
  • William H. Green, Jr.DirectorNamed in SEC Form D filings

What it has protected

USPTO · 0 granted of 14
  • PendingLow Temperature Hydrogen Sulfide Removal Systems with Hydriodic Acid and Iodine MixturesUSPTOApplication 19041335
  • PendingReactive Distillation System and Method for Production of Hydrogen from Hydriodic AcidUSPTOApplication 18780946
  • PendingA Liquid-liquid Absorber For The Treatment Of Sour Hydrocarbon Liquids Using IodineUSPTOApplication PCTUS2025038441
Show all 14 patent records
  • Low Temperature Hydrogen Sulfide Removal Systems with Hydriodic Acid and Iodine MixturesJul 31, 2025 · Application 19041335Pending
  • Reactive Distillation System and Method for Production of Hydrogen from Hydriodic AcidJan 30, 2025 · Application 18780946Pending
  • A Liquid-liquid Absorber For The Treatment Of Sour Hydrocarbon Liquids Using IodineApplication PCTUS2025038441Pending
  • Hydrogen Production From Hydrogen Sulfide Through An Iodine Cycle In Coal Conversion ProcessesApplication PCTUS2025034004Pending
  • Low Temperature Hydrogen Sulfide Removal Systems With Hydriodic Acid And Iodine MixturesApplication PCTUS2025013837Pending
  • Subsurface Hydrogen Extraction through a Sulfur Dioxide/Hydrogen Sulfide LoopApplication 63717985Pending
  • Integrated hydrogen and sulfuric acid production methods from hydrogen sulfideApplication 63700053Pending
  • Liquid-Liquid Absorber for the Treatment of Sour Hydrocarbon Liquids using IodineApplication 63678220Pending
  • Reactive Distillation System And Method For Production Of Hydrogen From Hydriodic AcidApplication PCTUS2024039143Pending
  • Hydrogen production from hydrogen sulfide through an iodine cycle using gasified coalApplication 63661286Pending
  • Low Temperature Hydrogen Sulfide Removal Systems with Hydriodic Acid and Iodine MixturesApplication 63627212Pending
  • Subsurface Hydrogen Extraction Through A Sulfur Dioxide/hydrogen Sulfide LoopApplication PCTUS2025053293Pending
  • Reactive Distillation System and Method for Production of Hydrogen from Hydriodic AcidApplication 63515215Pending
  • Integrated Hydrogen And Sulfuric Acid Production Methods From Hydrogen SulfideApplication PCTUS2025046583Pending

Regulatory activity · Energy

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 .