UnfoldIPThemes

Company patents

SixRing Inc.

SixRing Inc.'s patent strategy appears to be undergoing a significant shift, with a surprising decline across its core materials and pharma_biotech categories. For instance, Non-metallic Inorganic Compounds, representing 21.4% of its portfolio, saw a 50.0% decline in 2025 and zero patents so far in 2026, mirroring a similar sharp drop in Fermentation & Biosynthesis (14.3% of portfolio) which also had no patents in 2026 after a period of activity.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

56 US filings (since 2023) · 4 categories · 6 themes

Bio-derived Chemical Production

Methods for producing organic chemicals from biomass or through fermentation processes, often focusing on carbohydrates or fatty acid derivatives for food, health, or industrial applications.

Acyclic / Carbocyclic Compounds
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10since 2023
+25.0%YoY
Bioprocess Optimization and Control

Developing advanced bioreactor designs, fermentation strategies, and downstream processing techniques to optimize yield, purity, and efficiency of biotechnological production.

Fermentation & Biosynthesis
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5since 2023
-33.3%YoY
Carbon Dioxide Capture & Conversion

Technologies and materials for capturing carbon dioxide from gas streams and subsequently converting it into valuable chemical products or materials, rather than simply storing it.

Non-metallic Inorganic CompoundsAcyclic / Carbocyclic Compounds
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3since 2023
-50.0%YoY
Specialty Solvents and Coolants

Formulated liquid compositions designed for specific industrial applications, such as non-flammable cleaning, thermal management in electronics, or as low-viscosity, high-flash-point base fluids.

Functional Materials (LCD, Lubricants)
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2since 2023
n/a
Lithium Compound Synthesis for Batteries

Methods for synthesizing high-purity lithium compounds, such as lithium carbonate, lithium sulfide, or composite salts, specifically optimized for use in battery electrodes or electrolytes.

Non-metallic Inorganic Compounds
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1since 2023
n/a
Industrial Organic Synthesis

Methods and apparatus for the efficient and selective production of organic compounds, including amines, acids, and esters, often involving catalytic or continuous processes and purification steps.

Acyclic / Carbocyclic Compounds
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1since 2023
n/a

Patents

Showing 61-70 of 73

Page 7 of 8
US 20220267953 A1APPLICATION
D21C3/00

MODIFIED SULFURIC ACID AND USES THEREOF

Filed:2021-08-20Pub:2022-08-25
Applicant:SixRing Inc.

An aqueous composition comprising: sulfuric acid; a substituted aromatic compound; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.

US 20220267952 A1APPLICATION
D21C3/00

MODIFIED SULFURIC ACID AND USES THEREOF

Filed:2021-08-20Pub:2022-08-25
Applicant:SixRing Inc.

An aqueous composition comprising: sulfuric acid; an alkanesulfonic acid; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.

US 20220267951 A1APPLICATION
D21C3/00

MODIFIED SULFURIC ACID AND USES THEREOF

Filed:2021-08-20Pub:2022-08-25
Applicant:SixRing Inc.

An aqueous composition comprising: sulfuric acid; a heterocyclic compound; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.

US 20220267150 A1APPLICATION
C01B17/69

MODIFIED SULFURIC ACID AND USES THEREOF

Filed:2021-08-20Pub:2022-08-25
Applicant:SixRing Inc.

An aqueous composition comprising: sulfuric acid; a modifying agent comprising an amine group; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.

US 20220195665 A1APPLICATION
D21C3/04

NOVEL APPROACH TO BIOMASS DELIGNIFICATION

Filed:2021-08-18Pub:2022-06-23
Applicant:SixRing Inc.

Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; aryl sulfonic acid; triethanolamine; and combinations thereof; a metal salt; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.

US 20220195664 A1APPLICATION
D21C3/04

APPROACH TO BIOMASS DELIGNIFICATION

Filed:2021-08-18Pub:2022-06-23
Applicant:SixRing Inc.

A process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of: providing said lignocellulosic feedstock; providing a composition comprising; an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; imidazole derivatives; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a peroxide salt; and a peroxide; exposing said lignocellulosic feedstock to said composition for a period of time sufficient to depolymerize substantially all of the lignin present in said lignocellulosic feedstock into lignin oligomers and lignin monomers; wherein said process is carried out at atmospheric pressure.

US 20220186436 A1APPLICATION
D21C3/04

NOVEL APPROACH TO BIOMASS DELIGNIFICATION

Filed:2021-08-18Pub:2022-06-16
Applicant:SixRing Inc.

Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifiying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material.

US 20220186435 A1APPLICATION
D21C3/04

USE OF A 2 LIQUID PHASE SYSTEM IN BIOMASS DELIGNIFICATION

Filed:2021-08-18Pub:2022-06-16
Applicant:SixRing Inc.

Method for controlled delignification of lignocellulosic feedstock, said method comprising the steps of: providing a reactive phase of pH less than 1, said reactive phase comprising: water; sulfuric acid; a source of peroxide; a modifying agent, said modifying agent adapted to control the reactivity of the sulfuric acid; providing a holding phase, said holding phase comprising an organic solvent which does not react with the aqueous acidic composition; combining said reactive phase and holding phase to form a reaction mixture; exposing a lignocellulosic material to said reaction mixture for a period of time sufficient to allow delignification of the lignocellulosic material.

US 20220186434 A1APPLICATION
D21C3/04

COMBINATION APPROACH TO DELIGNIFICATION OF BIOMASS UNDER AMBIENT CONDITIONS

Filed:2021-08-17Pub:2022-06-16
Applicant:SixRing Inc.

Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifying agent selected from the group consisting of: sulfamic acid; imidazole; N-alkylimidazole derivative; taurine; a taurine derivative; a taurine-related compound; alkylsulfonic acid; arylsulfonic acid; triethanolamine; and combinations thereof; a metal oxide; and a peroxide; adding an organic solvent to the resulting mixture; allowing a delignification reaction to occur for a period of time sufficient to remove at least 80% of the lignin present on said plant material.

US 20220170206 A1APPLICATION
D21C3/04

NOVEL APPROACH TO BIOMASS DELIGNIFICATION

Filed:2021-08-18Pub:2022-06-02
Applicant:SixRing Inc.

Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a capping agent; and a peroxide; for a period of time sufficient to remove substantially all (at least 80%) of the lignin present on said plant material. Also disclosed are compositions to accomplish such delignification and processes using such.

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