USDA’s aerial electrostatic work belongs in the research map. It connects spray engineering, operational cloud seeding and a patent family that now explicitly includes fog dissipation. Each tells us something different: a patented method, a field observation and a laboratory capability should be assessed on its own terms.
Read the granted claims
US 11,116,150 B2, granted on 14 September 2021, describes an aircraft spraying electrically charged fluid into an updraft beneath a cloud. US 12,588,606 B2, granted on 31 March 2026, is a continuation-in-part. Its independent claim includes aircraft spraying negatively charged fluid for fog dissipation and other weather effects. The grants name both the United States, represented by the Secretary of Agriculture, and Active Influence and Scientific Management, SP.
The later patent’s fog claims still incorporate its aircraft-based method. They are relevant to any future airborne charging program; they do not establish a blanket claim to electrostatic water collection. A patent review must compare a proposed design with the granted claim elements, related applications and applicable jurisdiction. Neither a title nor a different device name resolves that question.
What happened in the field?
The published West Texas study compares 18 electrically seeded clouds with matched unseeded controls using radar analysis. The operations were not randomized. Its authors report increased precipitation metrics, estimate water-spray operations at nearly seven times the cost of flares, and identify detailed microphysical measurements as future work. This is useful field evidence with substantial attribution limits; it does not measure a ground collector’s visibility performance.
A transfer award is a separate kind of evidence
The Federal Laboratory Consortium’s 2024 national technology-transfer award records a 2022 license to the Texas Weather Modification Association. It also describes an earlier Insight Engineering research agreement that ended because of COVID-19 and funding constraints. The public account does not disclose the license’s exclusivity, territorial limits or field of use. Those terms require verification before drawing commercial conclusions.
A useful engineering conversation
The ARS Aerial Application Technology Research Unit in College Station, Texas publishes work on spray atomization, droplet sizing, deposition and drift. Its electrode-gap experiments are particularly relevant to charge delivery and nozzle geometry.
Those skills could inform an optional engineering discussion as we build FogLab in-house; external facility access is not a prerequisite. It does not establish the salt-seeded fog, approximately 1 µm wet-particle coverage or direct extinction measurements required by FogLab. A published spray-sizing protocol used configurations starting at 9 µm or 18 µm. Current instruments and achievable conditions need a capability review. No Weatherhill collaboration, facility booking or access agreement has been established.