Ultrasonic Cleaning Systems Patents: Who Leads, Gaps Ahead 2026
Ultrasonic Cleaning Systems Patents: Filing Trends and Where the White Space Sits
A 1990 patent still anchors the field. US4909266A, the earliest record in scope, carries 62 citations — far ahead of any other document in this set. Filings in scope rose to 9 in 2017, the peak year so far, and have not repeated that level since. The most recent year shows 0, but publication typically lags filing by around 18 months, so recent-year counts understate real activity.
- 1控制工程学公司9
- 2华东理工大学2
- 3MASSA FRANK1
- 4MASSA DONALD P1
- 5KURLAT GITTA M1
See the full ultrasonic cleaning systems analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about ultrasonic cleaning system patents
Who are the leading patent holders in ultrasonic cleaning systems?
The assignee ranking for this dataset covers five companies, with the leading assignee holding 9 records and the fifth-ranked holder just 1. This is a small ranking, not a top-50 or top-100 list, so it should be read as the complete set the data endpoint returns rather than a sample. Several of the individual inventors named in the ranking also appear together as co-assignees on shared filings, suggesting a tightly connected filing group rather than a broad competitive field.
What is the most important ultrasonic cleaning patent to know about?
US4909266A, titled ‘Ultrasonic cleaning system’ and granted in 1990, is the most-cited document in this dataset at 62 citations — far ahead of any other record. It covers a multi-transducer tank design with a selective switching system that sequentially activates transducers to raise cavitation intensity. Anyone drafting claims around transducer placement or switching logic should review it closely, since later documents in this space cite it heavily.
Why does radiation protection show up in ultrasonic cleaning patents?
In this dataset, G21F (radiation protection and shielding) appears in 75.0% of the 12 records in scope, nearly as often as the general cleaning class B08B at 83.3%. This reflects a distinct use case: ultrasonic cleaning systems adapted for decontaminating radioactive or nuclear-adjacent components, evidenced by titles like ‘Radiation hardened ultrasonic cleaning system’. It is a separate technical branch from conventional parts washing, not a coincidental overlap.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Ultrasonic Cleaning Systems covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.