CPC technology class · H05
H05H - Plasma Technique
Plasma technique ; production of accelerated electrically-charged particles or of neutrons; production or acceleration of neutral molecular or atomic beams. 3,951 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.
- 3,951
- US patents granted
- #3/6
- in H05
- 3.9%
- H05 class share
- -4%
- 5-yr velocity
The verdict
According to USPTO PatentsView, Plasma Technique ranks #275 of 670 CPC technology areas - 3,951 US patents granted since 2015, with recorded grant volume down 4% over five years.
- #275
- of 670 CPC technology areas
- 3,951
- US patents granted, 2015–2025
- Tokyo Electron
- leading assignee (195)
- -4%
- grant velocity, last 5 yrs
How H05H's grant cadence moved
Between 2020–2024, H05H recorded 1,685 grants versus 1,753 in 2015–2019 (-4% equal-window velocity). Across complete years, output peaked in 2019 at 402 grants and bottomed in 2018 at 290 (+39% peak-over-trough). Lead assignee Tokyo Electron Limited holds 4.9% of the class ; the top three share 9.5%.
Leaderboard read
H05H concentration, lead at 4.9%
Tokyo Electron Limited leads this historical grant record at 4.9% of H05H - foreign corporation assignees hold 52% of class grants (1,098 of 2,099). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.
- Leader's share
- 4.9%
- Top three share
- 9.5%
- Lead over #2
- 78
195 of 3,951 grants
of the class's recorded grants
more grants than Hypertherm, Inc.
Where H05H sits inside H05
Among 6 subclasses in H05 (Electric Techniques NOT Otherwise Provided FOR), H05H ranks #3 and holds 3.9% of the parent class's 102,507 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.
Rising assignees active in H05H
Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.
- #1 Tmeic Corporation 24x 2 → 48 company-wide · 5 in H05H
- #2 Shine Technologies, LLC 16x 0 → 16 company-wide · 9 in H05H
- #3 Velvetch, LLC 11x 0 → 11 company-wide · 7 in H05H
- #4 6K Inc. 11x 2 → 21 company-wide · 10 in H05H
- #5 Neuboron Therapy System Ltd. 6.00x 0 → 6 company-wide · 5 in H05H
H05H grants by year, peak 2019 (402)
US utility-patent grants per year in H05H, 2015–2025 - recent five years are down 4% versus 2015–2019.
Who leads H05H?
The 12 most active assignees in Plasma Technique ; Production OF Accelerated Electrically-charged Particles OR OF NEUTRONS; Production OR Acceleration OF Neutral Molecular OR Atomic Beams - wider bars mean more grants
- Tokyo Electron
Tokyo Electron Limited
195 patents
- Hypertherm
Hypertherm, Inc.
117 patents
- Lam Research 63
Lam Research Corporation
63 patents
- Tae 46
TAE Technologies, Inc.
46 patents
- Advanced Energy… 39
Advanced Energy Industries, Inc.
39 patents
- Lincoln Global 31
Lincoln Global, Inc.
31 patents
- Mevion Medical Systems 31
Mevion Medical Systems, Inc.
31 patents
- Foret Plasma Labs 30
Foret Plasma Labs, LLC
30 patents
- Perkinelmer Health… 29
PerkinElmer Health Sciences, Inc.
29 patents
- Ion Beam Applications 28
Ion Beam Applications
28 patents
- Mks Instruments 27
MKS Instruments, Inc.
27 patents
- Hitachi High-tech 26
Hitachi High-tech Corporation
26 patents
What this shows Tokyo Electron is the most active filer in H05H, holding 195 of the 3,951 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.
View data table
| Rank | Company | Patents in H05H |
|---|---|---|
| #1 | Tokyo Electron Limited | 195 |
| #2 | Hypertherm, Inc. | 117 |
| #3 | Lam Research Corporation | 63 |
| #4 | TAE Technologies, Inc. | 46 |
| #5 | Advanced Energy Industries, Inc. | 39 |
| #6 | Lincoln Global, Inc. | 31 |
| #7 | Mevion Medical Systems, Inc. | 31 |
| #8 | Foret Plasma Labs, LLC | 30 |
| #9 | PerkinElmer Health Sciences, Inc. | 29 |
| #10 | Ion Beam Applications | 28 |
| #11 | MKS Instruments, Inc. | 27 |
| #12 | Hitachi High-tech Corporation | 26 |
| #13 | Imagineering, Inc. | 25 |
| #14 | Sumitomo Heavy Industries, Ltd. | 24 |
| #15 | The Esab Group, Inc. | 23 |
| #16 | Plasmology4 | 23 |
| #17 | Jefferson Science Associates, LLC | 22 |
| #18 | Neuboron Medtech Ltd. | 21 |
| #19 | Varian Medical Systems, Inc. | 20 |
| #20 | Cinogy GMBH | 20 |
Footprint here vs. claim strategy
Each dot is a leading H05H assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.
Classes near H05H's 3,951-grant footprint
Nationwide nearest neighbors for H05H (#275 of 670 by volume ; lead share 4.9%) - not the H05 parent-class siblings above.
Nearest by grant volume
Questions about H05H
Which company holds the most patents in H05H?
Which H05H assignees grew fastest recently?
How does H05H compare inside parent class H05?
What to do with this data
H05H in context - here's where to go next.
- Tokyo Electron Limited leads H05H with 195 grants in this class. See full portfolio
- H05H ranks #275 of 670 by grant volume among all tracked CPC technology areas. See the ranking
- Inside parent class H05, the largest sibling subclass is H05K with 62,449 grants. Explore H05K
Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.
Methodology - H05H figures are USPTO PatentsView granted-utility totals for this subclass (3,951 grants in the tracked window).
Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.