Sublime Systems, Inc.
Electrochemical system for producing lime from calcium sources using renewable electricity instead of thermal decomposition of limestone
- Sector
- Clean tech
- Headquarters
- Weston, MA
- Founded
- 2020
- Latest Form D
- $5.9M, May 2021
- Total capital
- $6.1M
- Federal grants
- $253K
- 1 award · 2021
- Rank in peer group#25 of 59
- Private capital raised
- $5.9M
- 1 Form D · last May 2021
- 65 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 3
- 29 pending · first 2024
- Rank in peer group#6 of 59
Capital timeline
Latest events
- Federal grantEnergy · Phase I · Electrochemical Synthesis of Low-Carbon Cement$253K
- Private capital raisedForm D · SEC · 1st filing$5.9M
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 59 peers
Line = medianClean tech · System
- Federal grants#25 · top 42%
- Granted patents#6 · top 10%
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- Johanna WolfsonDirectorNamed in SEC Form D filings
- Katie RaeDirectorNamed in SEC Form D filings
- Leah EllisExecutive Officer, DirectorNamed in SEC Form D filings
- Yet-Ming ChiangExecutive Officer, DirectorNamed in SEC Form D filings
What it has protected
USPTO · 3 granted of 32- PendingDecarbonized Cement BlendsUSPTOApplication 19400384
- GrantedDecarbonized Cement BlendsUSPTOUS 12,600,672
- PendingHigh Efficiency Acid-base Leaching Methods And SystemsUSPTOApplication 19110657
Show all 32 patent records
- Decarbonized Cement BlendsJun 4, 2026 · Application 19400384Pending
- Decarbonized Cement BlendsApr 14, 2026 · US 12,600,672Granted
- High Efficiency Acid-base Leaching Methods And SystemsDec 25, 2025 · Application 19110657Pending
- Low Voltage Electrolyzer And Methods Of Using ThereofDec 18, 2025 · Application 18878340Pending
- Methods And Systems Of Acid-base Leaching For Industrial ByproductsSep 11, 2025 · Application 19075548Pending
- Electrochemical Materials Production And ProcessingMay 15, 2025 · Application 18955349Pending
- Siliceous Materials And Methods Of ManufactureApr 3, 2025 · Application 18834414Pending
- Systems And Methods For Using Heat Produced From Acid GenerationFeb 13, 2025 · Application 18717854Pending
- Electrochemical Materials Production And ProcessingJan 7, 2025 · US 12,187,647Granted
- Decarbonized Cement BlendsAug 20, 2024 · US 12,065,379Granted
- Methods For Extracting CO2 From Metal Carbonates And Use ThereofOct 5, 2023 · Application 18017221Pending
- Systems And Methods For Using Heat Produced From Acid GenerationApplication PCTUS2022081160Pending
- High Efficiency Acid-base Leaching Methods And SystemsApplication 63417272Pending
- High Efficiency Acid-base Leaching Methods And SystemsApplication 63375307Pending
- Low Voltage ElectrolyzerApplication 63366943Pending
- Siliceous Materials And Methods Of ManufactureApplication 63363650Pending
- Electrochemical Materials Production And ProcessingApplication PCTUS2022023534Pending
- Decarbonized Cement BlendsApplication PCTUS2022021204Pending
- Capturing and Sequestering Carbon Dioxide While Producing Valuable Co-ProductsApplication 63320527Pending
- Siliceous Materials And Methods Of ManufactureApplication 63307446Pending
- Methods For Using Heat From Hydrogen Halide Production For Materials Processing And SynthesisApplication 63287293Pending
- Methods For Extracting CO2 From Metal Carbonates And Use ThereofApplication PCTUS2021042746Pending
- Methods And Systems Of Acid-base Leaching For Industrial ByproductsApplication PCTUS2025019233Pending
- Cementitious Materials And Additives Containing Aluminum And/or Siliceous Materials And Methods Of Making ThereofApplication 19595761Pending
- Cementitious Materials And Additives Containing Aluminum And/or Siliceous Materials And Methods Of Making ThereofApplication PCTUS2024060170Pending
- Methods And Systems Of Acid-base Leaching For Industrial ByproductsApplication 63563684Pending
- Cation-depleted Crystalline Supplementary Cementitious MaterialApplication 63614296Pending
- Cementitious Materials And Additives Containing Aluminum CompoundsApplication 63609762Pending
- High Efficiency Acid-base Leaching Methods And SystemsApplication PCTUS2023073967Pending
- Low Voltage Electrolyzer And Methods Of Using ThereofApplication PCTUS2023069007Pending
- Siliceous Materials And Methods Of ManufactureApplication PCTUS2023062144Pending
- Siliceous Materials And Methods Of ManufactureApplication 63436307Pending
Related companies, and why
- ACLARITY INC.Similar federal contract value in Clean tech · null in contracts
- Nth Cycle, LLCSimilar federal contract value in Clean tech · null in contracts
- Rubi Laboratories, LLCSimilar federal contract value in Clean tech · null in contracts
- ENCHI CORPORATIONSimilar federal contract value in Clean tech · null in contracts
- Allumia, IncSimilar federal contract value in Clean tech · null in contracts
- Avatar Sustainable TechnologiesSimilar federal contract value in Clean tech · null in contracts
Regulatory activity · Clean tech
- 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
- Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
- Fluoxapiprolin; Pesticide TolerancesEnvironmental Protection Agency
- Chlormequat Chloride; 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 .