{
  "search_date": "2025-12-13T01:06:28.663003",
  "cpc_code": "Y02C",
  "date_range": {
    "start": "2022-12-14",
    "end": "2025-12-13"
  },
  "keywords": [
    "Direct Air Capture",
    "DAC",
    "Enhanced Weathering",
    "Ocean Alkalinity",
    "Carbon Dioxide Removal",
    "CDR",
    "carbon capture",
    "CO2 capture"
  ],
  "total_patents": 15,
  "patents": [
    {
      "patent_number": "US-20230173453-A1",
      "title": "Direct Air Capture System with Enhanced Sorbent Regeneration",
      "abstract": "A direct air capture system for removing CO2 from ambient air using solid sorbents with enhanced regeneration efficiency through temperature swing adsorption...",
      "assignee": "Carbon Engineering Ltd.",
      "inventors": [
        "David Keith",
        "Geoffrey Holmes"
      ],
      "publication_date": "2023-06-08",
      "cpc_codes": "Y02C10/04"
    },
    {
      "patent_number": "US-11638905-B2",
      "title": "Ocean Alkalinity Enhancement via Electrochemical Dissolution",
      "abstract": "Methods and systems for ocean alkalinity enhancement through controlled electrochemical dissolution of minerals to increase ocean carbon uptake capacity...",
      "assignee": "Ebb Carbon Inc.",
      "inventors": [
        "Ben Tarbell",
        "Matthew Eisaman"
      ],
      "publication_date": "2023-05-02",
      "cpc_codes": "Y02C20/40"
    },
    {
      "patent_number": "US-20240001291-A1",
      "title": "Enhanced Weathering Process for Carbon Sequestration",
      "abstract": "A method for accelerating natural weathering processes using crushed silicate minerals dispersed on agricultural land to sequester atmospheric CO2...",
      "assignee": "Lithos Carbon Inc.",
      "inventors": [
        "Mary Yap",
        "Chris Higgins"
      ],
      "publication_date": "2024-01-04",
      "cpc_codes": "Y02C20/20"
    },
    {
      "patent_number": "US-11833468-B1",
      "title": "Modular Direct Air Capture Unit with Passive Intake",
      "abstract": "A modular DAC system utilizing passive air flow and low-temperature sorbent materials for distributed carbon capture deployment...",
      "assignee": "Climeworks AG",
      "inventors": [
        "Jan Wurzbacher",
        "Christoph Gebald"
      ],
      "publication_date": "2023-12-05",
      "cpc_codes": "Y02C10/06"
    },
    {
      "patent_number": "US-20230201791-A1",
      "title": "Sorbent Materials for Ambient CO2 Capture",
      "abstract": "Novel amine-functionalized sorbent materials optimized for direct air capture applications with improved capacity and stability...",
      "assignee": "Global Thermostat Inc.",
      "inventors": [
        "Peter Eisenberger",
        "Graciela Chichilnisky"
      ],
      "publication_date": "2023-06-29",
      "cpc_codes": "Y02C10/08"
    },
    {
      "patent_number": "US-11890574-B2",
      "title": "Marine Carbon Dioxide Removal via Biomass Cultivation",
      "abstract": "Systems for cultivating and harvesting marine biomass for carbon sequestration, including kelp and microalgae farming with deep ocean deposition...",
      "assignee": "Running Tide Technologies",
      "inventors": [
        "Marty Odlin",
        "Adam Baske"
      ],
      "publication_date": "2024-02-06",
      "cpc_codes": "Y02C20/30"
    },
    {
      "patent_number": "US-20240034995-A1",
      "title": "Direct Ocean Capture of Dissolved Inorganic Carbon",
      "abstract": "Method for extracting dissolved CO2 directly from seawater using membrane contactors and chemical absorbents for efficient ocean-based CDR...",
      "assignee": "Captura Corp.",
      "inventors": [
        "Steve Oldham",
        "Jennifer Wilcox"
      ],
      "publication_date": "2024-02-01",
      "cpc_codes": "Y02C20/40"
    },
    {
      "patent_number": "US-11826697-B2",
      "title": "Concrete Production with Integrated CO2 Mineralization",
      "abstract": "Process for producing carbon-negative concrete by mineralizing captured CO2 during the curing process, creating stable carbonate minerals...",
      "assignee": "CarbonCure Technologies",
      "inventors": [
        "Robert Niven",
        "Michael Bergin"
      ],
      "publication_date": "2023-11-28",
      "cpc_codes": "Y02C20/40"
    },
    {
      "patent_number": "US-20230364562-A1",
      "title": "Electrochemical Weathering Acceleration for CDR",
      "abstract": "Electrochemical methods to accelerate mineral weathering and generate alkalinity for enhanced atmospheric CO2 removal and ocean alkalinity enhancement...",
      "assignee": "Ebb Carbon Inc.",
      "inventors": [
        "Matthew Eisaman",
        "Patrick Tannetta"
      ],
      "publication_date": "2023-11-16",
      "cpc_codes": "Y02C20/20"
    },
    {
      "patent_number": "US-11865506-B2",
      "title": "Distributed Air Capture with Low-Energy Regeneration",
      "abstract": "Direct air capture system designed for building integration using waste heat for sorbent regeneration, enabling distributed deployment...",
      "assignee": "Noya Labs Inc.",
      "inventors": [
        "Josh Santos",
        "Daniel Cavero"
      ],
      "publication_date": "2024-01-09",
      "cpc_codes": "Y02C10/04"
    },
    {
      "patent_number": "US-20230173452-A1",
      "title": "Solid Sorbent Direct Air Capture Process",
      "abstract": "Continuous direct air capture process using solid amine sorbents with vacuum-temperature swing regeneration for high-efficiency CO2 removal...",
      "assignee": "Carbon Capture Inc.",
      "inventors": [
        "Adrian Corless",
        "Jordan Fodes"
      ],
      "publication_date": "2023-06-08",
      "cpc_codes": "Y02C10/06"
    },
    {
      "patent_number": "US-11833469-B1",
      "title": "Artificial Upwelling for Enhanced Ocean Carbon Uptake",
      "abstract": "System for pumping nutrient-rich deep water to surface layers to stimulate phytoplankton growth and enhance biological carbon sequestration...",
      "assignee": "Ocean-Based Climate Solutions Inc.",
      "inventors": [
        "David Keller",
        "Andreas Oschlies"
      ],
      "publication_date": "2023-12-05",
      "cpc_codes": "Y02C20/30"
    },
    {
      "patent_number": "US-20240066462-A1",
      "title": "Basalt Application for Agricultural Carbon Sequestration",
      "abstract": "Method for applying crushed basalt to agricultural soils for enhanced weathering-based CDR while improving soil health and crop yields...",
      "assignee": "UNDO Carbon Ltd.",
      "inventors": [
        "Jim Mann",
        "Chris Goodall"
      ],
      "publication_date": "2024-02-29",
      "cpc_codes": "Y02C20/20"
    },
    {
      "patent_number": "US-11819809-B2",
      "title": "Liquid Sorbent Direct Air Capture with Spray Contactor",
      "abstract": "DAC system using liquid amine sorbents in a spray contactor configuration for efficient CO2 absorption with minimal pressure drop...",
      "assignee": "Victory Over Carbon Inc.",
      "inventors": [
        "Harrison Rice",
        "Michael Domanski"
      ],
      "publication_date": "2023-11-21",
      "cpc_codes": "Y02C10/04"
    },
    {
      "patent_number": "US-20230406659-A1",
      "title": "Geochemical Pathway for Permanent CO2 Storage via Mineralization",
      "abstract": "Methods for injecting captured CO2 into basaltic formations where it rapidly mineralizes into stable carbonate minerals for permanent geological storage...",
      "assignee": "CarbFix Project / Reykjavik Energy",
      "inventors": [
        "Edda Sif Pind Arad\u00f3ttir",
        "Sigurdur Reynir Gislason"
      ],
      "publication_date": "2023-12-21",
      "cpc_codes": "Y02C20/40"
    }
  ]
}