Circulators, Isolators and Ferrite Component Patents
35.6% concentration at the top. The five leading assignees together hold 196 of 551 records in scope — a dense core rather than a flat field of single filers. Annual counts rose from 10 in 2017 to a peak of 24 in 2019, then settled into a flatter pattern; 2021 and 2024 both sit at 11 filings, a 0% change across that span. The 2026 figure of 2 is a partial year and should not be read as a drop.
- 1CREO MEDICAL LTD17.4%
- 2MEDICAL DEVICE INNOVATIONS6.7%
- 3RAYTHEON CO4.5%
- 4INTERNATIONAL BUSINESS MACHINE CORPORATION3.8%
- 5MOTOROLA INC3.1%
See the full circulators isolators and ferrite components 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 this landscape
How many patents cover circulators, isolators and ferrite components?
This dataset contains 551 published records filed between 2015 and 2026 that match search terms for microwave circulators, ferrite isolators and nonreciprocal components combined with terms like magnetic bias, isolation bandwidth and insertion loss. The true figure for the most recent one to two years is understated because publication typically lags filing by around 18 months. Treat 2024 as the last year with a reasonably complete count.
Who are the leading patent holders in circulator and isolator technology?
Filing activity is concentrated: the top 5 assignees together hold 196 of the 551 records in scope, or 35.6%, and the top 10 extend that to 257 records, or 46.6%. The single leading assignee holds 96 records, well ahead of the fifth-place assignee at 17. Beyond the top 10, the ranked list of 100 assignees thins out quickly into occasional, single-digit filers.
Is patent filing in this field growing or slowing down?
Filing activity peaked at 24 records in 2019 and has since flattened rather than grown or declined: the count was 11 in 2021 and 11 again in 2024, a 0% change over that span. Figures for 2025 and 2026 are still incomplete due to normal publication lag and should not be read as a downturn. The overall pattern is one of a stable, mature filing rate rather than an expanding or contracting field.
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 Circulators Isolators and Ferrite Components 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.