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Waters Corp (WAT)

NYSE: WAT · Laboratory Analytical Instruments · Milford, MA · filing with the SEC since 1996
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◀ Past 6.5● Present 6.9▶ Future 5.7
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Patents

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

1,607 patents granted to the 15 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 Waters Corp’s names, not what it holds today.

Patents granted
1,607
1,583 utility, 23 design, 1 reissue, 1976 to Dec 31, 2025
Granted in 2025
77
Against 113 in 2024 and 104 in 2023
Applications published
1,782
82 of them in 2025
Names they are printed under
15
a subsidiary, 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
Measurement214
Electrical machinery, apparatus, energy144
Chemical engineering54
Medical technology21
Analysis of biological materials14
Mechanical elements9
Computer technology8
Engines, pumps, turbines5
Macromolecular chemistry, polymers4
Biotechnology4
Surface technology, coating4
Digital communication3
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name15 counted
Waters Technologies Corporation a subsidiary
US, as the owner printed on each patent
691 granted
505 published
Micromass UK Limited a subsidiary
GB, as the owner printed on each patent. 2 more under the same name are not counted (printed in US)
678 granted
366 published
Micromass UK Limited a subsidiary
named as the applicant on its applications, in GB
0 granted
364 published
Waters Technologies Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
343 published
Wyatt Technology, LLC a subsidiary
US, as the owner printed on each patent
103 granted
78 published
Waters Technologies Ireland Limited a subsidiary
IE, as the owner printed on each patent
33 granted
22 published
TA Instruments-Waters LLC a subsidiary
US, as the owner printed on each patent
42 granted
4 published
TA Instruments-Waters LLC a subsidiary
named as the applicant on its applications, in US. 1 more under the same name are not counted (printed in DE)
0 granted
34 published
WATERS GMBH its own name
US, as the owner printed on each patent. 7 more under the same name are not counted (printed in DE, printed in KR)
30 granted
3 published
Wyatt Technology Corporation a subsidiary
named as the applicant on its applications, in US
0 granted
24 published
Micromass Limited a subsidiary
GB, as the owner printed on each patent
20 granted
2 published
Waters Technologies Ireland Limited a subsidiary
named as the applicant on its applications, in IE
0 granted
22 published
Andrew Alliance S.A. a subsidiary
named as the applicant on its applications, in CH
0 granted
12 published
Andrew Alliance S.A. a subsidiary
CH, as the owner printed on each patent
9 granted
2 published
Environmental Resource Associates a subsidiary
US, as the owner printed on each patent
1 granted
1 published
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 30, 202512,510,520Use of vapor deposition coated flow paths for improved analytical analysisMeasurementWaters Technologies Corporation
Dec 23, 202512,504,400Ion mobility separationElectrical machinery, apparatus, energyMicromass UK Limited
Dec 16, 202512,500,073Method of calibrating a mass spectrometerElectrical machinery, apparatus, energyWaters Technologies Ireland Limited
Dec 2, 202512,488,976Atmospheric pressure ionisation sourceElectrical machinery, apparatus, energyMicromass UK Limited
Dec 2, 202512,488,972Atmospheric solids analysis source assemblyElectrical machinery, apparatus, energyMicromass UK Limited
Dec 2, 202512,487,210Encapsulated pre-analytic workflows for flow-through devices, liquid chromatography and mass spectrometric analysisMeasurementWaters Technologies Corporation
Dec 2, 202512,487,153Device for removal of excess material from a test sampleMeasurementTA Instruments-Waters LLC
Nov 25, 202512,483,885Methods, mediums, and systems for accessing analytical chemistry systemsDigital communicationWaters Technologies Ireland Limited
Nov 25, 202512,478,949Composite particles with non-porous hybrid organic-inorganic materialChemical engineeringWaters Technologies Corporation
Nov 18, 202512,474,307Solvent delivery with a reduced volume single stroke pumping arrangement providing continuous solvent flowEngines, pumps, turbinesWaters Technologies Corporation
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 25, 20252025/0388962RNA MAPPING METHODS WITH HIGH SEQUENCE COVERAGEBiotechnologyWaters Technologies Corporation
Dec 25, 20252025/0387778SUPERFICIALLY POROUS MATERIALS COMPRISING A SUBSTANTIALLY NONPOROUS CORE HAVING NARROW PARTICLE SIZE DISTRIBUTION; PROCESS FOR THE PREPARATION THEREOF; AND USE THEREOF FOR CHROMATOGRAPHIC SEPARATIONSChemical engineeringWaters Technologies Corporation
Dec 18, 20252025/0383358ENZYME-IMMOBLIZED PARTICLES FOR ONLINE PROTEIN DIGESTIONBiotechnologyWaters Technologies Corporation
Dec 18, 20252025/0383319ION MOBILITY SEPARATORSElectrical machinery, apparatus, energyMicromass UK Limited
Dec 18, 20252025/0383270PAN STATUS INDICATOR LIGHT FOR ANALYTICAL INSTRUMENT SAMPLE TRAYElectrical machinery, apparatus, energyTA Instruments-Waters LLC
Dec 11, 20252025/0377326MEASUREMENT OF ELECTRICAL PROPERTIES OF POWDER SAMPLE DURING RHEOLOGICAL TESTINGMeasurementTA Instruments-Waters LLC
Dec 11, 20252025/0377323INTEGRATED AUTOMATED SAMPLE PREPARATION FOR THERMAL ANALYTICAL INSTRUMENTSMeasurementTA Instruments-Waters LLC
Dec 11, 20252025/0376668CHEMICALLY MODIFIED PROTEASE ENZYMES WITH ENHANCED AUTOLYSIS RESISTANCEBiotechnologyWaters Technologies Corporation
Dec 4, 20252025/0369933DILUTION CONTROL FOR FIELD FLOW FRACTIONATION CHANNELMeasurementWyatt Technology Corporation
Dec 4, 20252025/0369907BATTERY CONTAINMENT DEVICES FOR THERMAL MEASUREMENTSElectrical machinery, apparatus, energyTA Instruments-Waters LLC
What it applied for, 2024 to 2025: Measurement 67 · Electrical machinery, apparatus, energy 47 · Chemical engineering 29 · Biotechnology 11 · Analysis of biological materials 9 · Mechanical elements 4.

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 WAT · research, not advice