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ConocoPhillipsPatent grant

ConocoPhillips was granted a patent for a closed-loop LNG process.

What happened

In September 2026 ConocoPhillips patented a liquefied natural gas process for treating nitrogen-containing feed gas in LNG production facilities.

Source

patents.google.comSep 22, 2026

US patent US12742589

Closed loop LNG process for a feed gas with nitrogen

Abstract

Systems and methods for processing liquefied natural gas (LNG) can include an LNG production system with a methane refrigeration cycle downstream from an ethylene refrigeration cycle. The methane refrigeration cycle can be a closed loop methane refrigeration cycle that maintains a methane refrigerant separate from a natural gas feed, (e.g., compared to an open loop methane refrigeration cycle that extracts the methane refrigerant from the natural gas feed and recombines the methane refrigerant with the natural gas feed). The natural gas feed can be a medium or high nitrogen gas feed having a nitrogen content greater than 1.0% molarity.

patents.google.com/patent/US12742589Read the full source

Extracted by Autobound

From the Signal API record
Signal
Patent grant

What this signalsA new patent often shows where a company is putting its R&D budget.

Grant date
Sep 22, 2026
Inventors
4
Patent number
US12742589
Assignee
ConocoPhillips Company

The full record

From the Signal API record

People

  • Ying ZhangInventor
  • Qi MaInventor
  • Wesley R. QuallsInventor
  • Will T. JamesInventor
  • Jinghua ChanInventor

Details

Primary CPC class
F25J 1/0055
USPTO assignee
ConocoPhillips Company
What the invention does
A method that uses separate, recirculating methane refrigerant after ethylene cooling to liquefy natural gas without mixing the refrigerant into the feed stream.

Topics and mentions

Tags

  • Intellectual Property
  • Research & Development
  • Oil & Gas
  • Engineering

Technologies named

  • LNG processing
  • natural gas liquefaction
  • refrigeration cycles
  • process engineering

Extraction

Detected
Sep 23, 2026
signal_type
patents-company
signal_subtype
patentGrant

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Company

  • linkedin_urlValue in the API
  • industriesValue in the API
  • employee_count_lowValue in the API
  • employee_count_highValue in the API
  • revenueValue in the API
  • descriptionValue in the API

Signal

  • signal_nameValue in the API
  • associationValue in the API
Show the full JSONThe record on this page and the API request

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{
  "signal_id": "c21ad719-a593-5054-891f-fce3078ef774",
  "signal_type": "patents-company",
  "signal_subtype": "patentGrant",
  "detected_at": "2026-09-23T14:57:25+00:00",
  "company": {
    "name": "ConocoPhillips",
    "domain": "conocophillips.com"
  },
  "data": {
    "cpc": [
      {
        "code": "F25J 1/0055"
      },
      {
        "code": "F25J 1/0022"
      },
      {
        "code": "F25J 1/004"
      },
      {
        "code": "F25J 2220/62"
      }
    ],
    "tags": [
      "Intellectual Property",
      "Research & Development",
      "Oil & Gas",
      "Engineering"
    ],
    "detail": "In September 2026 ConocoPhillips patented a liquefied natural gas process for treating nitrogen-containing feed gas in LNG production facilities.",
    "summary": "ConocoPhillips was granted a patent for a closed-loop LNG process.",
    "event_at": "2026-09-22",
    "inventors": [
      {
        "name": "Ying Zhang",
        "status": "unresolved",
        "is_primary": true
      },
      {
        "name": "Qi Ma",
        "status": "unresolved",
        "is_primary": false
      },
      {
        "name": "Wesley R. Qualls",
        "status": "resolved",
        "is_primary": false,
        "linkedin_url": "https://www.linkedin.com/in/wes-qualls-13620016"
      },
      {
        "name": "Will T. James",
        "status": "unresolved",
        "is_primary": false
      },
      {
        "name": "Jinghua Chan",
        "status": "unresolved",
        "is_primary": false
      }
    ],
    "event_kind": "grant_date",
    "grant_date": "2026-09-22",
    "source_url": "https://patents.google.com/patent/US12742589",
    "cpc_primary": {
      "code": "F25J 1/0055"
    },
    "patent_title": "Closed loop LNG process for a feed gas with nitrogen",
    "patent_number": "US12742589",
    "uspto_assignee": "ConocoPhillips Company",
    "patent_abstract": "Systems and methods for processing liquefied natural gas (LNG) can include an LNG production system with a methane refrigeration cycle downstream from an ethylene refrigeration cycle. The methane refrigeration cycle can be a closed loop methane refrigeration cycle that maintains a methane refrigerant separate from a natural gas feed, (e.g., compared to an open loop methane refrigeration cycle that extracts the methane refrigerant from the natural gas feed and recombines the methane refrigerant with the natural gas feed). The natural gas feed can be a medium or high nitrogen gas feed having a nitrogen content greater than 1.0% molarity.",
    "precision_class": "structural",
    "invention_explanation": "A method that uses separate, recirculating methane refrigerant after ethylene cooling to liquefy natural gas without mixing the refrigerant into the feed stream.",
    "technologies_mentioned": [
      "LNG processing",
      "natural gas liquefaction",
      "refrigeration cycles",
      "process engineering"
    ]
  }
}

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