ICF Control System Patents: Leaders, Trends & White Space 2026
- Small, concentrated field. Only 26 patent families sit inside this search, and filing peaked in 2022 at 6 before flattening — this is not a technology in a filing race.
- Fusion physics dominates, but manufacturing IPCs shadow it closely. G21B and H05H lead the classification mix, yet forging, sheet-metal and machine-tool subclasses (B21J, B23Q, B21D) together account for a similar volume, pointing to hardware fabrication as a real, under-discussed part of the control-system story.
- No single assignee shows momentum in the latest year. Every tracked assignee, including the University of Illinois cluster and Blue Laser Fusion, reports zero filings in the most recent year — a sign the field is between filing waves, not a sign of retreat.
What this landscape covers
Inertial confinement fusion (ICF) control systems govern how a target is positioned, how laser pulses are timed, and how beam delivery is synchronised across a fusion chamber. This landscape isolates patent families where laser beam control, target positioning control or pulse timing control intersect with ICF, laser fusion or inertial confinement fusion terminology directly in the title, abstract, claims or description. The result is a narrow, technically specific corpus rather than a broad fusion-energy sweep.
26 patent families were identified across the 2015-2026 window, filed through a mix of national offices and the PCT route, with Europe and WIPO each accounting for five filings. Because publication typically lags filing by around 18 months, the most recent one to two years in the trend line will read lower than the true filing activity once later applications publish.
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Filing trend and technology mix
The filing trend and classification split together describe a niche field where fusion-specific claims sit alongside a substantial body of general fabrication and machine-tool patent activity swept in by the control-system search terms.
Filings rose to a single peak, then went flat
Filing activity was at zero as recently as 2017, climbed to a peak of 6 families in 2022, and has not sustained that level since. A flat-to-declining midpoint reading suggests the field has not entered a sustained growth phase; it may instead be moving in bursts tied to individual research programmes or funding cycles.
Fusion physics and hardware fabrication share the classification space
G21B (fusion reactors) and H05H (plasma and particle accelerators) are the largest subclasses, as expected for ICF-specific filings. But B21J (forging), B23Q (machine tool fittings), B21D (sheet-metal working) and B33Y (additive manufacturing) collectively cover a comparable volume of records, which indicates that a meaningful share of the patent activity captured here concerns the physical fabrication and precision-positioning hardware that a control system depends on, not the control algorithms or optics alone.
Shares are the percentage of the 26 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Inertial Confinement Fusion Control System with Eureka
This page is one run against one query. Ask Eureka your own question about inertial confinement fusion control system and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in this corpus
Dynamic beam-shaping for laser-coupled optical cavities
The representative record describes a system and method for fusion energy generation using a high-intensity pulsed or continuous-wave laser generation system, with dynamic beam shaping of the light source applied specifically to laser fusion. It ties beam-shaping control directly to the optical cavity architecture rather than treating beam control as a generic add-on.Filed by Blue Laser Fusion, Inc., published 2025-05-08.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20230191543A1 | System and method to perform dissimilar operations in a single machine | 37 |
| 2 | WO2001013810A1 | Method and system for laser tissue welding | 26 |
| 3 | WO2023004155A2 | System and method to perform dissimilar operations in a single machine | 25 |
| 4 | WO1999024990A2 | Inertial electrostatic confinement (IEC) fusion device with gate-valve pulsing | 12 |
| 5 | CA2310071A1 | Inertial electrostatic confinement (IEC) fusion device with gate-valve pulsing | 4 |
| 6 | JP2024531877A | 単一の機械で異なる動作を実行するシステムおよび方法 | 1 |
Citation counts are drawn from the searched corpus only and favour older filings; treat them as a signal of influence within this dataset, not as a ranking of current technical importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Publication numbers are shown where the record carries one (6 of 6 rows); clicking a row searches Eureka by that number.
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With only 26 families in this exact intersection, the field rewards precision over volume: a small number of well-drafted claims on beam-target synchronisation or dynamic beam shaping can occupy meaningful ground.
A burst pattern, not a sustained climb
Filing went from zero in 2017 to a peak of 6 families in 2022 and has since flattened. That pattern is more consistent with episodic research-programme filings than with an industry scaling up production filings year over year.
Fabrication hardware is not a footnote
B21J, B23Q, B21D and B33Y together rival the core fusion-physics subclasses in record count. Target-positioning and beam-delivery hardware — forged components, machined fittings, additively manufactured parts — is patented alongside the physics, and a landscape search limited to G21B/H05H alone would miss it.
Filing is spread thin across offices
No single receiving office dominates; Europe and the PCT route each carry five filings, with Norway, Australia, Israel and Japan each holding a handful more. This spread suggests applicants are testing multiple jurisdictions rather than committing to one primary market.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to inertial confinement fusion control system, with the prior art for and against each one.
Who is filing, and where the gaps sit
The assignee base is small and academically weighted, with co-filing patterns that point to individual research teams rather than large corporate portfolios.
University of Illinois cluster anchors early IEC work
The strongest co-assignee pairings in this dataset link a University of Illinois entity with named individual inventors across multiple filings, consistent with a university research group patenting inertial electrostatic confinement (IEC) fusion device work with gate-valve pulsing.
Blue Laser Fusion is the most recent named entrant
Blue Laser Fusion's dynamic beam-shaping filing is the most recent representative record identified, focused on coupling a high-intensity laser source to an optical cavity for fusion energy generation — a narrower, more commercially framed claim than the earlier academic filings.
No assignee shows current-year momentum
Every tracked assignee — the University of Illinois cluster, named individual inventors, and corporate entrants alike — shows zero filings in the most recent year. Combined with the 18-month publication lag, this reads as a data-cutoff effect as much as an activity signal.
| Assignee | Recent year | YoY |
|---|---|---|
| The Board of Trustees of the University of Illinois | 0 | — |
| Skorfast LLC | 0 | — |
| Blue Laser Fusion, Inc. | 0 | — |
| WILLIAMS MICHAEL J | 0 | — |
| STUBBERS ROBERT A | 0 | — |
| MIRACLE MEDICALSURGICAL TECH | 0 | — |
| MILEY GEORGE H | 0 | — |
| JURCZYK BRIAN E | 0 | — |
Where to take this analysis
A 26-family landscape is small enough to review claim-by-claim rather than relying on aggregate charts alone.
Check freedom-to-operate against the cited cluster
The highest-cited records in this corpus, including the gate-valve pulsing IEC filings, are a reasonable starting point for a claim chart before drafting new pulse-timing or target-positioning claims.
Explore the citation network in EurekaWatch the fabrication-hardware subclasses separately
Because B21J, B23Q, B21D and B33Y carry as much volume as the core fusion IPCs, track them as their own competitive lane rather than folding them into general fusion-energy monitoring.
Set up a subclass alert in EurekaRevisit the trend once later filings publish
The flat recent-year count is partly a publication-lag artefact; re-running this search in six to twelve months will sharpen the 2024-2026 picture.
Track this landscape in EurekaCommon questions about ICF control system patents
This landscape identifies 26 patent families published between 2015 and 2026 that specifically combine inertial confinement fusion, ICF or laser fusion terminology with laser beam control, target positioning control or pulse timing control language. That is a narrow, precisely scoped count, not a count of all fusion-energy patents; broader fusion-reactor searches would return far more. Because publication lags filing by roughly 18 months, the true number of filings from the last one to two years will be higher than currently shown once those applications publish.
The corpus is academically weighted, with a University of Illinois-linked cluster of inventors appearing repeatedly in co-assignee pairings tied to inertial electrostatic confinement fusion devices with gate-valve pulsing. More recently, Blue Laser Fusion, Inc. has filed on dynamic beam-shaping coupled to an optical cavity. No assignee in this dataset shows filings in the most recent tracked year, so 'leading' here reflects historical filing volume and citation counts rather than current momentum.
Target positioning and beam-delivery hardware in an ICF system relies on precision-machined and forged components, so patent classification systems route relevant hardware claims into B21J, B23Q, B21D and B33Y alongside the core G21B and H05H fusion classifications. In this dataset those fabrication-related subclasses carry a volume of records comparable to the fusion-specific classes, which means a search limited to fusion IPCs alone would understate the real footprint of patented control-system hardware.
Filing activity rose from zero in 2017 to a peak of 6 families in 2022, then flattened rather than continuing to climb, so a simple year-over-year trend line reads as flat to declining at the midpoint. That said, the most recent one to two years are understated by the roughly 18-month gap between filing and publication, so the apparent slowdown may partly reverse once later applications become visible. Treat the current trend as inconclusive rather than as evidence of declining interest.
Based on this dataset, direct coverage is thin in areas such as additive-manufactured target holders, real-time pulse-timing feedback loops, and machine-tool-integrated target alignment systems, even though adjacent fabrication classifications show real activity. The gate-valve pulsing mechanism used in earlier IEC fusion device filings is another area where a specific, well-drafted claim could sit beside a small but citation-heavy existing cluster rather than crowding it. Any new filing strategy here should start with a claim chart against the small number of highly cited records before assuming a branch is open.
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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.