Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026
10 patents granted to the 5 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Comstock Inc.’s names, not what it holds today.
Patents granted
10
10 utility, 1976 to Dec 31, 2025
Granted in 2025
3
Against none in 2024 and 1 in 2023
Applications published
13
3 of them in 2025
Names they are printed under
5
its holding company, its own name, a subsidiary
By yearGrantedApplications published
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Basic materials chemistry2
Environmental technology2
Semiconductors1
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name5 counted
Comstock IP Holdings LLC its holding company
named as the applicant on its applications, in US; a holding company under the name Comstock Inc.
12 publishedComstock, Inc. its own name
US, as the owner printed on each patent
0 publishedComstock IP Holdings LLC its holding company
US, as the owner printed on each patent; a holding company under the name Comstock Inc.
0 publishedBioleum Corporation a subsidiary
US, as the owner printed on each patent
0 publishedComstock IP Holding LLC its holding company
named as the applicant on its applications, in US; a holding company under the name Comstock Inc.
1 published
Newest grantseach row opens the USPTO’s own copy
| Granted | Patent | Title | Field | Owner as printed |
|---|
| Oct 14, 2025 | 12,440,801 | Systems and methods for separation of CO2 from a gaseous mixture, collection, and conversion | Environmental technology | Bioleum Corporation |
| Jul 15, 2025 | 12,359,132 | Lignocellulosic biomass derived biointermediates and renewable fuels | Basic materials chemistry | Comstock IP Holdings LLC |
| Jun 10, 2025 | 12,325,006 | Electric field assisted Ranque-Hilsch (EFARH) vortex tube for enhanced product separation and transformation | Environmental technology | Comstock IP Holdings LLC |
| Apr 4, 2023 | 11,618,862 | Organic monolignol biopolymer impregnated wood particle briquettes/pellets and method of making | Basic materials chemistry | Comstock IP Holdings LLC |
| Oct 25, 2022 | 11,482,631 | Broadband exciton scavenger device | Semiconductors | Comstock IP Holdings LLC |
| Oct 19, 1999 | 5,969,350 | Maldi/LDI time-of-flight mass spectrometer | Electrical machinery, apparatus, energy | Comstock, Inc. |
| Sep 21, 1999 | 5,955,730 | Reflection time-of-flight mass spectrometer | Electrical machinery, apparatus, energy | Comstock, Inc. |
| Oct 20, 1998 | 5,825,025 | Miniaturized time-of-flight mass spectrometer | Electrical machinery, apparatus, energy | Comstock, Inc. |
| Jan 12, 1993 | 5,178,349 | Railroad signal system | Transport | Comstock, Inc. |
| Feb 9, 1988 | 4,724,538 | Emergency roadside telephone communications system | Digital communication | Comstock, Inc. |
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|
| May 8, 2025 | 2025/0145830 | CRYSTALLINE GRAPHITE AND COMPOSITES FROM MELT-FLOWABLE POLYLIGNIN | Macromolecular chemistry, polymers | Comstock IP Holdings LLC |
| Apr 24, 2025 | 2025/0129396 | METHOD OF MAKING A MICROBIAL FATTY ACID AND FATTY ACID BUTYL ESTER USING A HYBRID BIOSOLVENT WASHING/EXTRACTION PROCESS AND MICROBIAL LIPID OIL AND HYDROPHOBIC BIOHYDROCARBON AS A LIQUID FUEL INTERMEDIARY | Biotechnology | Comstock IP Holdings LLC |
| Jan 30, 2025 | 2025/0034335 | METHOD FOR SEPARATING AND RECOVERING LIGNIN AND MELTABLE FLOWABLE BIOLIGNIN POLYMERS | Macromolecular chemistry, polymers | Comstock IP Holdings LLC |
| Jun 13, 2024 | 2024/0191143 | LIGNOCELLULOSIC BIOMASS DERIVED BIOINTERMEDIATES AND RENEWABLE FUELS | Basic materials chemistry | Comstock IP Holding LLC · patent 12,359,132 granted from it |
| Sep 14, 2023 | 2023/0287538 | REACTIVE PHASE SEPARATION OF BLACK MASS FROM LITHIUM-ION BATTERY RECYCLING AND METHODS | Materials, metallurgy | Comstock IP Holdings LLC |
| Jun 8, 2023 | 2023/0175099 | LI-ION BATTERY RECYCLING PROCESS AND SYSTEM FOR BLACK MASS FRACTIONATION AND RECOVERY OF SPECIFIC MATERIALS | Materials, metallurgy | Comstock IP Holdings LLC |
| Apr 13, 2023 | 2023/0115052 | LITHIUM BATTERY RECYCLING PROCESS, APPARATUS, AND SYSTEM FOR THE PRODUCTION OF BLACK MASS | Materials, metallurgy | Comstock IP Holdings LLC |
| Apr 13, 2023 | 2023/0113236 | CRYSTALLINE GRAPHITE AND COMPOSITES FROM MELT-FLOWABLE POLYLIGNIN | Macromolecular chemistry, polymers | Comstock IP Holdings LLC |
| Mar 16, 2023 | 2023/0079926 | ELECTRIC FIELD ASSISTED RANQUE-HILSCH (EFARH) VORTEX TUBE FOR ENHANCED PRODUCT SEPARATION AND TRANSFORMATION | Environmental technology | Comstock IP Holdings LLC · patent 12,325,006 granted from it |
| Jan 19, 2023 | 2023/0015442 | METHOD FOR SEPARATING AND RECOVERING LIGNIN AND MELTABLE FLOWABLE BIOLIGNIN POLYMERS | Macromolecular chemistry, polymers | Comstock IP Holdings LLC |
What it applied for, 2024 to 2025: Macromolecular chemistry, polymers 2 · Basic materials chemistry 1 · Biotechnology 1.
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.