Calcarea, Inc.
A reactor system that accelerates natural carbonation processes to enable permanent CO2 storage and removal
- Sector
- Clean tech
- Headquarters
- ALTADENA, CA
- Founded
- 2022
- Latest Form D
- $3M, Jan 2023
- Total capital
- $3M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $3M
- 1 Form D · last Jan 2023
- 45 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 0
- 11 pending
Capital timeline
Latest events
- 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.
Founders and team
From SEC Form D filings- Jess AdkinsExecutive Officer, DirectorNamed in SEC Form D filings
What it has protected
USPTO · 0 granted of 11- PendingSplit Acid-Base Streams to Improve AWL and Other Carbon Capture ReactorsUSPTOApplication 19249781
- PendingShip Based Carbon Capture, Systems and Methods of Use ThereofUSPTOApplication 18645286
- PendingSplit Acid-base Streams To Improve Awl And Other Carbon Capture ReactorsUSPTOApplication PCTUS2025035286
Show all 11 patent records
- Split Acid-Base Streams to Improve AWL and Other Carbon Capture ReactorsDec 25, 2025 · Application 19249781Pending
- Ship Based Carbon Capture, Systems and Methods of Use ThereofOct 24, 2024 · Application 18645286Pending
- Split Acid-base Streams To Improve Awl And Other Carbon Capture ReactorsApplication PCTUS2025035286Pending
- Underway CO2 Storage Solution For Ship Based Scrubber SystemsApplication PCTUS2025019442Pending
- Horizontal System for CO2 Adsorption and Conversion to Bicarbonate for Marine VesselsApplication 63744727Pending
- Split Acid-Base Streams to Improve Awl and Other Carbon Capture ReactorsApplication 63664040Pending
- Ship Based Carbon Capture, Systems And Methods Of Use ThereofApplication PCTUS2024026093Pending
- Underway CO2 Storage Solution for Marine Vessel Based Scrubber SystemsApplication 63563832Pending
- Horizontal System For CO2 Adsorption And Conversion To Bicarbonate For Marine VesselsApplication PCTUS2026011093Pending
- Ship Based Carbon Capture, Systems and Methods of Use ThereofApplication 63497890Pending
- Device And Method For Determining Inorganic Carbon System ParametersApplication PCTUS2025038162Pending
Related companies, and why
- Molekule Group, Inc./DESimilar federal contract value in Clean tech · null in contracts
- Capture6 CorpSimilar federal contract value in Clean tech · null in contracts
- EMPRISE CONCEPTS LLCSimilar federal contract value in Clean tech · null in contracts
- Ecotone Renewables PBCSimilar federal contract value in Clean tech · null in contracts
- MICROSEISMIC INCSimilar federal contract value in Clean tech · null in contracts
- FrostCarbon, Inc.Similar 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 .