Compressors & Blowers Patents: Top Companies & Filing Trends 2026
- Concentration is modest. the ranked leader holds 1,340 records but the top 5 combined account for only 12.9% of all 36,448 records in scope — no single filer dominates this field.
- Filing has cooled from its peak. activity peaked in 2021 at 1,060 records and fell to 627 by 2024, a 41% decline over that span; more recent years are still filling in as publication catches up with filing.
- Gas-turbine and turbine claims dominate the IPC mix. F02C alone touches 10.9% of records, well ahead of separation, liquefaction and positive-displacement pump classes further down the list.
Filing growth compares 2021 (1,060 records) with 2024 (627) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 36,448 records in scope (CR5), not by the ranked leaders only.
What the compressor and blower filing record actually shows
The dataset covers 36,448 published records filed between 2015 and the 2026 cut-off, drawn from filings that combine compressor or blower hardware language with performance parameters such as flow rate, pressure ratio, rotor speed, seal clearance and blade geometry. That combination pulls in gas-turbine plants, turbomachinery, positive- and non-positive-displacement pumps, and the separation and liquefaction processes that compressors feed. The representative record, US8756938B2, illustrates the pattern well: a gas compressor operating method that corrects a limit pressure ratio in real time to prevent surging, tying mechanical hardware claims to an operating-condition algorithm.
Filing activity rose through the late 2010s, peaked in 2021, and has since declined through the last complete year of data. Because publication typically lags filing by around 18 months, the final one to two years in any trend understate true filing volume and should be read as provisional rather than as evidence of a slowdown.
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Trend and technology composition
Two views matter here: how filing volume has moved year over year, and how records distribute across IPC subclasses. Both are read against the same 36,448-record denominator so the shares are directly comparable.
Filings climbed to a 2021 peak, then eased
Annual output moved from 766 records in 2017 to a peak of 1,060 in 2021, then declined to 627 by 2024 — a 41% drop over that three-year window. Years after 2024 are still incomplete due to publication lag and should not be read as a continued fall.
Turbine and turbomachinery classes lead; separation and liquefaction follow
F02C (gas-turbine plants) covers 10.9% of records, ahead of F01D (turbines & non-positive engines) at 6.2% and F04D (non-positive-displacement pumps) at 6.0%. Separation (B01D, 5.4%), liquefaction (F25J, 4.1%), refining (C10G, 3.3%), catalysis (B01J, 3.1%) and positive-displacement pumps (F04B, 3.1%) round out the picture — each record can carry several classes, so these shares sum to more than 100%.
Shares are the percentage of the 36,448 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Compressors & Blowers Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about compressors & blowers patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaA representative claim: operating-condition control layered on compressor hardware
US8756938B2 — Gas compressor operating method and gas turbine equipped with gas compressor
In a method for operating a gas compressor which compresses gas whose supply conditions change and which is equipped with an intake-flow regulating mechanism, a limit pressure ratio that defines the operational upper limit of the pressure ratio relative to the intake flow rate of the gas compressor or the degree of opening of the intake-flow regulating mechanism to prevent surging in the gas compressor is corrected by multiplying a reference limit pressure ratio calculated from the design conditions of the gas compressor by a first correction factor calculated depending on a detected operating-state value of the gas compressor.Filed by Mitsubishi Power, Ltd.; granted 2014-06-24.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US4543399A | Fluidized bed reaction systems | 3,120 |
| 2 | US20130201316A1 | System and method for server based control | 1,727 |
| 3 | US5458135A | Method and device for delivering aerosolized medicaments | 1,101 |
| 4 | US20190339688A1 | Methods and systems for data collection, learning, and streaming of machine signals for analytics and mainten… | 974 |
| 5 | US4882400A | Process for gas phase polymerization of olefins in a fluidized bed reactor | 816 |
| 6 | US8193129B2 | Refrigerator oil, compressor oil composition, hydraulic fluid composition, metalworking fluid composition, he… | 775 |
| 7 | US20200348662A1 | Platform for facilitating development of intelligence in an industrial internet of things system | 733 |
| 8 | US6232352B1 | Methanol plant retrofit for acetic acid manufacture | 724 |
| 9 | US20210157312A1 | Intelligent vibration digital twin systems and methods for industrial environments | 716 |
| 10 | US20200294401A1 | A Method and Apparatus for Collecting and Using Sensor Data from a Vehicle | 615 |
Citation counts reflect influence within this searched corpus and skew toward older records; they are not a measure of current commercial relevance.
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Browse MCP servers →What the numbers mean for filing strategy
The concentration, trend and classification figures point to a field that is wide rather than deep: real activity, but no single owner controls the claim space.
Leadership is real but not dominant
The leading assignee holds 1,340 records, well ahead of fifth place at 699, but the top 5 combined still account for only 12.9% of all records in scope. The top 10 reach 19.2%. That leaves roughly four-fifths of the corpus spread across a long tail of filers.
Activity has eased from its 2021 high
Filings rose from 766 in 2017 to a peak of 1,060 in 2021, then fell to 627 by 2024. That three-year decline is the clearest complete-year trend in the data; 2025 and 2026 figures are still filling in under normal publication lag.
Gas-turbine plant claims carry the densest coverage
F02C leads the IPC mix at 10.9% of records, with F01D and F04D each above 6%. Separation, liquefaction and refining classes each sit in the 3-5% range, showing compressor claims frequently overlap with downstream process equipment.
The US is the dominant filing venue
US receiving-office filings (9,630) lead the field, followed by EPO (3,993), WIPO/PCT (2,185), Canada (1,519), Australia (1,252) and the UK (870). The PCT volume signals a meaningful share of filers pursuing multi-jurisdiction protection from the outset.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to compressors & blowers patent landscape, with the prior art for and against each one.
Who holds ground, and where the momentum has slowed
The ranked leaders sit atop large aerospace and industrial-gas portfolios, but recent-year momentum has cooled broadly across the biggest names — consistent with the corpus-wide filing dip after 2021.
A clear leader without field dominance
The top-ranked assignee's 1,340 records outpace fifth place (699) and tenth place (388) by wide margins, but that lead translates into only 12.9% of the 36,448-record field once the top 5 are combined.
Recent-year filing has slowed across major names
Several of the most active historical filers show sharp year-on-year declines in the latest year — one leading assignee down 98%, others down 67-89% — while others show no latest-year filings at all. This mirrors the corpus-wide post-2021 easing rather than isolated retreats.
Co-assignment is concentrated in a handful of pairings
Only 10 co-assignee pairs appear in the data. The strongest links two large industrial names at 185 joint records, well ahead of the next pairings at 23 each — suggesting most collaboration in this field is occasional rather than structural.
| Assignee | Recent year | YoY |
|---|---|---|
| General Electric | 1 | -98% |
| Strong Force IoT Portfolio 2016, LLC | 1 | -67% |
| Pratt & Whitney Canada Corp | 1 | -89% |
| Honeywell International Inc. | 1 | -75% |
| Rolls-Royce plc | 0 | -100% |
| United Technologies Corporation | 0 | — |
| ExxonMobil Upstream Research Company | 0 | — |
| Air Products and Chemicals, Inc. | 0 | -100% |
Where to take this analysis next
The figures here establish scale and direction. Turning them into a filing or freedom-to-operate decision means going claim by claim in the areas that matter to a specific product.
Check freedom to operate on a specific mechanism
Filter to the IPC subclass and date range that match a specific compressor or blower mechanism, then review claim scope on the highest-cited records in that subset before committing to a design.
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Recent-year YoY figures move quickly as publication lag resolves; set up ongoing monitoring on the assignees active in your specific sub-area rather than relying on a single snapshot.
Set up assignee monitoring in EurekaMap white space before drafting new claims
The under-claimed sub-areas identified here are a starting point, not a conclusion — validate thin coverage against full claim text before drafting around it.
Explore white space mapping in EurekaCompressor and blower patents: common questions
The ranked leader in this dataset holds 1,340 records, with fifth place at 699 and tenth place at 388, so leadership drops off quickly after the top handful of names. Even so, the top 5 assignees combined account for only 12.9% of the 36,448 records in scope, and the top 10 reach 19.2%. That means the large majority of filing activity sits with a long tail of companies rather than a concentrated few, so a competitive review should look well beyond the top names to get a full picture of who is active in a specific sub-area.
Filing activity rose from 766 records in 2017 to a peak of 1,060 in 2021, then declined to 627 by 2024 — a 41% drop over that three-year period. Years after 2024 show lower counts still, but that reflects publication lag of roughly 18 months rather than a confirmed drop in filing behaviour, since not all recent filings have published yet. The safest reading is that activity eased from a 2021 high through the last complete year of data, with the very latest years still provisional.
F02C, covering gas-turbine plants, is the largest single IPC subclass at 10.9% of the 36,448 records, ahead of F01D (turbines and non-positive engines) at 6.2% and F04D (non-positive-displacement pumps) at 6.0%. Separation processes (B01D), gas liquefaction (F25J), hydrocarbon refining (C10G), catalysis (B01J) and positive-displacement pumps (F04B) each cover a further 3-5% of records. Because a single record can carry multiple IPC classes, these figures add up to more than 100% and should be read as overlap, not as a partition of the field.
US8756938B2 claims a method for operating a gas compressor that corrects a limit pressure ratio — the operational ceiling that prevents surging — by multiplying a reference limit ratio from the design conditions by a correction factor derived from a detected operating-state value. It ties surge prevention to real-time operating-condition feedback rather than to a fixed design limit. Anyone building intake-flow or surge-margin control logic for a compressor should review this claim's scope on correction-factor calculation specifically; it does not block compressor hardware designs that use a different, non-correction-factor approach to surge control.
Relative to the dense coverage in gas-turbine and turbomachinery classes, sub-areas such as seal clearance control algorithms, variable blade geometry actuation, and rotor speed surge-margin sensing carry comparatively thin direct coverage in this corpus. These sit adjacent to well-claimed hardware classes but focus on control and sensing logic rather than mechanical structure. Any white-space read should be confirmed against full claim text in the relevant IPC subclass before drafting, since thin representation in this dataset is a starting signal, not a guarantee of an open path.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.