String Trimmer Patents: Top Companies & Filing Trends 2026
String Trimmer and Brush Cutter Patents: Who Leads and Where the Claims Sit
Filing activity nearly quadrupled, rising 267% from 3 filings in 2021 to 11 in 2024 as electrification renewed interest in line-feed and shaft designs. Filings peaked at 18 in 2017, fell back over the following years, and then grew 267% from 3 in 2021 to 11 in 2024 — the clearest sign of renewed R&D investment in the field, likely tied to cordless and electric platform redesigns.
- 1BLACK & DECKER CORP30
- 2AERO FLEX TECH17
- 3MORABIT VINCENT D17
- 4MORABITO CHRISTOPHER J15
- 5WHITE CONSOLIDATED IND INC14
See the full string trimmers and brush cutters 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 string trimmer and brush cutter patents
Who holds the most patents on string trimmers and brush cutters?
Ownership in this dataset is concentrated: the top 5 assignees out of 52 ranked companies account for 44.3% of all 210 records in scope, and the single largest assignee alone holds 30 records. Below the top 10, which together hold 72.4% of records, the ranking thins into a long tail of assignees with only one or two filings each. This pattern suggests a small number of established players control the core mechanism while smaller entities file narrow variants around it.
What technology areas do string trimmer patents actually cover?
The overwhelming majority, 91.0% of the 210 records in scope, fall under IPC class A01D, covering harvesting and mowing mechanisms broadly. Smaller but meaningful clusters exist in B26B (hand-held cutting tools, 10.0%), A01G (horticulture and forestry, 7.1%), and B29C (plastics shaping, 6.7%), reflecting the mix of cutting-head, shaft and component-material innovation within the field. Because a single record can carry multiple IPC classes, these shares add up to more than 100%, and the classes should be read as overlapping technical facets rather than exclusive categories.
Is filing activity in this field growing or slowing down?
Filings grew substantially in the recent complete period, rising 267% from 3 in 2021 to 11 in 2024. Earlier activity peaked at 18 filings in 2017 before dipping, so the field has cycled through at least one prior wave already. Data beyond 2024 should be read cautiously: publication typically lags actual filing by around 18 months, so the apparent drop-off toward 2026 reflects incomplete records rather than a genuine slowdown.
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 String Trimmers and Brush Cutters 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.