Via Separations, LLC

WATERTOWN, MA · Founded 2017 · Materials · Private

Graphene oxide thin-film nanofiltration membranes for industrial separations

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Updated Oct 23, 2026

Sector: Materials
Headquarters: WATERTOWN, MA
Founded: 2017
Latest Form D: $37.9M, Oct 2021
Total capital: $43.6M

Federal grants: $1.6M; 3 awards · 2017–2018; Rank in peer group#71 of 141
Private capital raised: $42M; 2 Form D · last Oct 2021; 60 months since last filing
Federal contracts: None on recordNo federal contract awards found.
Granted patents: 8; 32 pending · first 2021; Rank in peer group#9 of 141

Capital timeline

Latest events

Oct 2021Private capital raisedForm D · SEC · 2nd filing$37.9M
Mar 2019Private capital raisedForm D · SEC · 1st filing$4.1M
Sep 2018Federal grantNSF · Phase II · SBIR Phase II: Robust Nanofiltration to Enable Challenging Chemical and Pharmaceutical Separations$1.2M
Jul 2018Federal grantAgriculture · Novel Filtration For Higher Nutritional Value Food Products$100K
Jul 2017Federal grantNSF · Phase I · SBIR Phase I: Robust Nanofiltration to Enable Challenging Chemical and Pharmaceutical Separations$225K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Federal first

21months

from Via Separations, LLC’s first federal award to its first private round.

First federal award · Jul 2017: NSF · $225K
First Form D · Mar 2019: $4.1M · 1st Form D
Awards before first raise: 3 awards

An association in public records, not a cause or a prediction.

Standing among 141 peers

Line = median

Materials · Material

Federal grants#71 · top 50%
Granted patents#9 · top 6%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

Researcher links verified by same-company patents and grants

Shreya DaveResearcherExecutive Officer, DirectorLinked by $1.5M in grants as PI
Arunas ChesonisDirectorNamed in SEC Form D filings
Brent KellerExecutive Officer, DirectorNamed in SEC Form D filings
Katie RaeDirectorNamed in SEC Form D filings

What it has protected

USPTO · 8 granted of 40

Jun 25, 2026PendingFiltration Apparatus Containing Graphene Oxide MembraneUSPTOApplication 19264446
Jun 18, 2026PendingSystems And Methods For Processing Black Liquor SolutionsUSPTOApplication 19263364
Jun 18, 2026PendingFiltration Apparatus Comprising Polymer Modified Graphene Oxide MembranesUSPTOApplication 19532984

Show all 40 patent records

Filtration Apparatus Containing Graphene Oxide MembraneJun 25, 2026 · Application 19264446Pending
Systems And Methods For Processing Black Liquor SolutionsJun 18, 2026 · Application 19263364Pending
Filtration Apparatus Comprising Polymer Modified Graphene Oxide MembranesJun 18, 2026 · Application 19532984Pending
Durable Graphene Oxide MembranesMay 7, 2026 · Application 19235806Pending
Graphene Oxide Membranes Comprising Sulfonated SupportNov 27, 2025 · Application 19294014Pending
Filtration Apparatus Containing Graphene Oxide MembraneAug 26, 2025 · US 12,397,268Granted
Durable Graphene Oxide Membranes Comprising Functionalized Support ComponentsJul 17, 2025 · Application 19170762Pending
Durable Graphene Oxide MembranesJul 15, 2025 · US 12,357,950Granted
Heat Exchanger Integration With Membrane System For Evaporator Pre-concentrationJun 5, 2025 · Application 18907083Pending
Systems And Methods For Concentrating Fluid Components Via Distillation And Membrane FiltrationApr 10, 2025 · Application 18664011Pending
Heat Exchanger Integration With Membrane System For Evaporator Pre-concentrationNov 12, 2024 · US 12,140,355Granted
Heat Exchanger Integration With Membrane System For Evaporator Pre-concentrationFeb 27, 2024 · US 11,913,692Granted
Filtration Apparatus Containing Alkylated Graphene Oxide MembraneAug 10, 2023 · Application 18116762Pending
Apparatus For Characterization Of Graphene Oxide CoatingsJul 6, 2023 · Application 18117722Pending
Systems And Methods For Concentrating Fluid Components Via Distillation And Membrane FiltrationDec 22, 2022 · Application 17885931Pending
Durable Graphene Oxide MembranesNov 15, 2022 · US 11,498,034Granted
Systems And Methods For Concentrating Fluid Components Via Distillation And Membrane FiltrationSep 20, 2022 · US 11,446,609Granted
Filtration Apparatus Containing Graphene Oxide MembraneSep 21, 2021 · US 11,123,694Granted
Durable Graphene Oxide MembranesAug 24, 2021 · US 11,097,227Granted
Durable Graphene Oxide MembranesApplication 62910789Pending
Systems And Methods For Concentrating Fluid Components Via Distillation And Membrane FiltrationApplication PCTUS2019050568Pending
Filtration Apparatus Containing Graphene Oxide MembraneApplication 62848014Pending
Systems And Methods For Optimized Separation Via Graphene-containing Membranes And DistillationApplication 62729697Pending
Filtration Apparatus Comprising Polymer Modified Graphene Oxide MembranesApplication PCTUS2024041589Pending
Graphene Oxide Membranes Comprising Sulfonated SupportApplication PCTUS2024015998Pending
Systems And Methods For Processing Black Liquor SolutionsApplication PCTUS2024010720Pending
Durable Graphene Oxide Membranes Comprising Functionalized Support ComponentsApplication PCTUS2023076392Pending
Filtration Apparatus Comprising Polymer Modified Graphene Oxide MembranesApplication 63531750Pending
Graphene Oxide Membranes Comprising Sulfonated SupportApplication 63445949Pending
Systems And Methods For Processing Black Liquor SolutionsApplication 63437963Pending
Apparatus For Characterization Of Graphene Oxide CoatingsApplication PCTUS2022081163Pending
Heat Exchanger Integration With Membrane System For Evaporator Pre-concentrationApplication PCTUS2022080120Pending
Filtration Apparatus Containing Alkylated Graphene Oxide MembraneApplication PCTUS2022078051Pending
Durable Graphene Oxide Membranes Comprising Functionalized Support ComponentsApplication 63414339Pending
Metal Organic Framework Modified Graphene Oxide MembranesApplication PCTUS2024051111Pending
Metal Organic Framework Modified Graphene Oxide MembranesApplication 63610980Pending
Apparatus For Characterization Of Graphene Oxide CoatingsApplication 63287726Pending
Heat Exchanger Integration With Membrane System For Evaporator Pre-concentrationApplication 63283767Pending
Filtration Apparatus Containing Alkylated Graphene Oxide MembraneApplication 63255723Pending
Filtration Apparatus Containing Graphene Oxide MembraneApplication PCTUS2020033236Pending

VIA SEPARATIONS, INC.Shares a founder: Shreya Dave
Copernic Catalysts, Inc.Similar federal contract value in Materials · null in contracts
Boston Electrometallurgical CorporationSimilar federal contract value in Materials · null in contracts
WAVE LOGIX, INC.Similar federal contract value in Materials · null in contracts
Water Planet EngineeringSimilar federal contract value in Materials · null in contracts
ADAXIUS CORPSimilar federal contract value in Materials · null in contracts

Regulatory activity · Materials

Sector-level, not company-level

24 Apr 2026Eliminating Regulations Establishing Fellowships in Laboratory Standardization and Testing for Foreign CitizensNational Institute of Standards and Technology
19 Feb 2026Eliminating Obsolete Marking Requirements for Toy, Look-Alike, and Imitation FirearmsNational Institute of Standards and Technology
19 Feb 2026Eliminating Obsolete Regulations Related to the Advanced Technology Program and the Technology Innovation ProgramNational Institute of Standards and Technology

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.