Thermal Insulation Patents: Who Leads and Where Claim Space Is Still Open
No single filer dominates. the ranked leader holds 3,107 records and the top 10 combined account for just 7.2% of all 178,977 records in scope — this is a fragmented field, not a gatekept one. From 879 records in 2017 to a peak of 938 in 2019, filings eased to 680 by 2024 — a 26% drop from the 2021 level of 915. The 2025 and 2026 counts (down to 67 for the partial latest year) are not yet complete because of publication lag, not falling interest.
- 1LG ELECTRONICS INC1.7%
- 2PANASONIC HOLDINGS CORP1.0%
- 3MITSUBISHI ELECTRIC CORP0.8%
- 4GENERAL ELECTRIC CO0.7%
- 5SAMSUNG ELECTRONICS CO LTD0.6%
See the full thermal insulation patent landscape 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 on the thermal insulation patent landscape
Who holds the most thermal insulation patents?
The leading assignee in this dataset holds 3,107 records, well ahead of the fifth-ranked assignee at 1,058 and the tenth at 669. Even so, the top 10 combined account for only 7.2% of the 178,977 records in scope, so no single company controls the field. Any freedom-to-operate review should look beyond the leaders to the long tail, since most of the corpus sits with assignees outside the ranked top 10.
Is thermal insulation patent filing growing or shrinking?
Filing peaked in 2019 at 938 records and has since eased, with the most recent complete year, 2024, sitting 680 records — 26% below the 2021 level of 915. That is a genuine cooling among an established filing base, not evidence of technology decline. Note that publication lags filing by around 18 months, so the 2025-26 counts in any trend chart will keep revising upward and should not be read as the current trajectory.
Which technology areas see the most thermal insulation patent activity?
No single IPC subclass dominates: F28D (heat-exchange apparatus) leads at 0.9% of all 178,977 records, closely followed by F25D refrigeration, H01M batteries, F16L piping and G01K temperature measurement, each around 0.6-0.7%. Because a single record can carry several IPC codes, these shares sum to more than 100% of the corpus. The practical read is that claim activity is distributed across heat exchange, refrigeration, energy storage, piping and sensing rather than stacked in one branch.
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 Thermal Insulation Patent Landscape covering 2015–2026, data cut-off 2026-08-31. 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.