Cold spray coating is a solid-state materials deposition process in which metal or composite powders are accelerated to supersonic velocities in a heated gas stream and impact a substrate below the material's melting point. Bonding is achieved through kinetic energy rather than thermal fusion — a fundamental distinction from conventional thermal spray and surface treatment technologies.

Particles are accelerated in compressed gas — typically nitrogen or helium — to velocities of 300–1,200 m/s, plastically deforming upon impact to produce dense, low-porosity coatings. The absence of melting preserves powder chemistry, avoids oxidation, and produces compressive residual stress in the coating — properties valued in repair, reconditioning, and precision fabrication.

The technology is gaining strategic importance in 2026 as semiconductor fabrication, aerospace maintenance, and advanced manufacturing seek coating solutions that avoid heat-induced phase changes, oxidation, and residual stress. According to WIPO patent data, kinetic spray processes have seen consistent filing activity across multiple jurisdictions since the mid-1990s, with application-specific filings accelerating from 2022 onward.

Within the retrieved patent dataset, three primary process architectures emerge: pure cold spray (kinetic deposition at sub-melting temperatures), hybrid plasma-cold spray (combining plasma gas heating with cold spray acceleration mechanics), and cold spray integrated into multi-step surface treatment pipelines as one layer within composite coating systems involving thermal spray, HVOF, or PVD underlayers.

Semiconductor equipment is the highest-growth vector for cold spray in 2025–2026. Two dedicated filings from Korean and Chinese assignees target Y₂O₃ chamber coatings, directly competing with incumbent plasma spray processes. R&D teams at equipment OEMs and coating service providers should prioritize cold spray process development for fluorine-plasma-resistant ceramics. PatSnap's life sciences and advanced materials intelligence provides comparable landscape tools for adjacent domains.

The hybridization of cold spray with plasma and thermal spray in multi-layer architectures reduces the "cold spray vs. thermal spray" competitive framing. IP strategists should consider filing on composite architectures that combine the adhesion benefits of plasma spray bond coats with the density and purity advantages of cold spray functional layers — a space that remains relatively uncrowded in this dataset.

Oerlikon Metco and General Electric hold foundational hybrid and application-specific cold spray patents, but both relevant filings in this dataset are lapsing or inactive, creating freedom-to-operate opportunities for new entrants in bearing reconditioning and hybrid plasma-cold spray systems. Confirm lapse status in target jurisdictions before assuming clear FTO. The European Patent Office register and USPTO PAIR system are authoritative sources for legal status verification.

Korean and Chinese assignees are rapidly closing the gap with Western incumbents in cold spray for high-value semiconductor applications. Technology investors evaluating cold spray service companies should weigh the IP competitiveness of Asian specialists (Cynos, Shenyang Fortune) against established Western thermal spray houses expanding into cold spray. PatSnap's IP analytics platform enables competitive benchmarking across jurisdictions.

Process control and real-time monitoring are becoming differentiating capabilities. Patents disclosing closed-loop cold spray deposition with in-situ coating property feedback (density, thickness, adhesion) will become increasingly valuable as semiconductor and aerospace customers demand tighter coating specification compliance. This is an underserved IP area based on this dataset. Explore how PatSnap customers use Eureka to identify exactly these white-space opportunities.