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Energy Recovery, Inc. (ERII)

Nasdaq: ERII · Special Industry Machinery, NEC · San Leandro, CA · filing with the SEC since 2008
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◀ Past 6.9● Present 6.2▶ Future 4.6
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Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

76 patents granted to the 2 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 Energy Recovery, Inc.’s names, not what it holds today.

Patents granted
76
75 utility, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
9
Against 9 in 2024 and 3 in 2023
Applications published
93
7 of them in 2025
Names they are printed under
2
its own name
By yearGrantedApplications published
'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
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
Thermal processes and apparatus11
Civil engineering9
Engines, pumps, turbines9
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name2 counted
Energy Recovery, Inc. its own name
named as the applicant on its applications, in US
0 granted
85 published
Energy Recovery, Inc. its own name
US, as the owner printed on each patent
76 granted
8 published
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 23, 202512,504,028Cartridge sealing and alignment in a pressure exchangerEngines, pumps, turbinesEnergy Recovery, Inc.
Sep 9, 202512,410,821Reducing cavitation, noise, and vibration in a pressure exchangerEngines, pumps, turbinesEnergy Recovery, Inc.
Sep 2, 202512,404,877Pressure exchangers with fouling and particle handling capabilitiesEngines, pumps, turbinesEnergy Recovery, Inc.
Aug 19, 202512,392,528Control of refrigeration and heat pump systems that include pressure exchangersThermal processes and apparatusEnergy Recovery, Inc.
Jul 8, 202512,352,143Hydraulic energy transfer system with fluid mixing reductionCivil engineeringEnergy Recovery, Inc.
May 27, 202512,313,103Control of a pressure exchanger systemEngines, pumps, turbinesEnergy Recovery, Inc.
May 13, 202512,296,421Systems and methods for repairing fluid handling equipmentCivil engineeringEnergy Recovery, Inc.
Apr 15, 202512,276,447Refrigeration system with high speed rotary pressure exchangerThermal processes and apparatusEnergy Recovery, Inc.
Jan 28, 202512,209,778Refrigeration and heat pump systems with pressure exchangersThermal processes and apparatusEnergy Recovery, Inc.
Dec 31, 202412,181,195Low energy consumption refrigeration system with a rotary pressure exchanger replacing the bulk flow compressor and the high pressure expansion systemThermal processes and apparatusEnergy Recovery, Inc.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Nov 20, 20252025/0354569PRESSURE EXCHANGERS WITH FOULING AND PARTICLE HANDLING CAPABILITIESEngines, pumps, turbinesEnergy Recovery, Inc.
Oct 30, 20252025/0334034HYDRAULIC ENERGY TRANSFER SYSTEM WITH FLUID MIXING REDUCTIONCivil engineeringEnergy Recovery, Inc.
Aug 7, 20252025/0251177REFRIGERATION SYSTEM WITH HIGH SPEED ROTARY PRESSURE EXCHANGERThermal processes and apparatusEnergy Recovery, Inc.
Jul 3, 20252025/0215861GEOTHERMAL POWER GENERATION SYSTEMS WITH PRESSURE EXCHANGERSEngines, pumps, turbinesEnergy Recovery, Inc.
Jun 26, 20252025/0207614PRESSURE EXCHANGER FLOW ADAPTEREngines, pumps, turbinesEnergy Recovery, Inc.
Jun 12, 20252025/0188957PRESSURE EXCHANGERS WITH FOULING AND PARTICLE HANDLING CAPABILITIESEngines, pumps, turbinesEnergy Recovery, Inc. · patent 12,404,877 granted from it
Mar 20, 20252025/0093077LOW ENERGY CONSUMPTION REFRIGERATION SYSTEM WITH A ROTARY PRESSURE EXCHANGER REPLACING THE BULK FLOW COMPRESSOR AND THE HIGH PRESSURE EXPANSION VALVEThermal processes and apparatusEnergy Recovery, Inc.
Dec 19, 20242024/0418416CONTROL OF REFRIGERATION AND HEAT PUMP SYSTEMS THAT INCLUDE PRESSURE EXCHANGERSThermal processes and apparatusEnergy Recovery, Inc.
Nov 28, 20242024/0393017REFRIGERATION AND HEAT PUMP SYSTEMS WITH PRESSURE EXCHANGERSThermal processes and apparatusEnergy Recovery, Inc.
Aug 8, 20242024/0263848REFRIGERATION SYSTEM WITH HIGH SPEED ROTARY PRESSURE EXCHANGERThermal processes and apparatusEnergy Recovery, Inc. · patent 12,276,447 granted from it
What it applied for, 2024 to 2025: Thermal processes and apparatus 7 · Engines, pumps, turbines 5 · Civil engineering 2.

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.

SI Assistanton ERII · research, not advice