CPC technology class · H05

H05G - X-ray Technique

X-ray technique. 2,073 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

2,073
US patents granted: #4/6
in H05: 2.0%
H05 class share: -15%
5-yr velocity

The verdict

According to USPTO PatentsView, X-ray Technique ranks #366 of 670 CPC technology areas - 2,073 US patents granted since 2015, with recorded grant volume down 15% over five years.

#366
of 670 CPC technology areas: 2,073
US patents granted, 2015–2025: Gigaphoton
leading assignee (245): -15%
grant velocity, last 5 yrs

How H05G's grant cadence moved

Between 2020–2024, H05G recorded 872 grants versus 1,026 in 2015–2019 (-15% equal-window velocity). Across complete years, output peaked in 2020 at 242 grants and bottomed in 2024 at 135 (+79% peak-over-trough). Lead assignee Gigaphoton Inc. holds 11.8% of the class ; the top three share 25.2%.

Leaderboard read

H05G concentration, lead at 11.8%

Gigaphoton Inc. leads this historical grant record at 11.8% of H05G - foreign corporation assignees hold 77% of class grants (911 of 1,183). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 11.8%
Top three share: 25.2%
Lead over #2: 12

Where H05G sits inside H05

Among 6 subclasses in H05 (Electric Techniques NOT Otherwise Provided FOR), H05G ranks #4 and holds 2.0% 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.

H05K 62,449 H05B 33,418 H05H 3,951 H05F 557 H05C 59

Rising assignees active in H05G

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 Siemens Healthineers AG 222x 0 → 222 company-wide · 15 in H05G
#2 GE Precision Healthcare LLC 4.61x 135 → 622 company-wide · 18 in H05G
#3 NuRay Technology Co., Ltd. 3.00x 1 → 3 company-wide · 5 in H05G
#4 KLA Corporation 2.99x 113 → 338 company-wide · 15 in H05G
#5 Excillum AB 2.40x 5 → 12 company-wide · 20 in H05G

H05G grants by year, peak 2020 (242)

US utility-patent grants per year in H05G, 2015–2025 - recent five years are down 15% versus 2015–2019.

Gigaphoton

245
Asml Netherlands B V

233
Siemens Healthcare

44
Moxtek

32
Ushio Denki

31
Nuctech

26
Rapiscan Systems

25
Canon Medical Systems

24
Toshiba Medical…

23
Kla-tencor

22
Varex Imaging

22
Carl Zeiss Smt

21

What this shows Gigaphoton is the most active filer in H05G, holding 245 of the 2,073 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass H05G
Rank	Company	Patents in H05G
#1	Gigaphoton Inc.	245
#2	Asml Netherlands B.V.	233
#3	Siemens Healthcare Limited	44
#4	Moxtek, Inc.	32
#5	Ushio Denki Kabushiki Kaisha	31
#6	Nuctech Company Limited	26
#7	Rapiscan Systems, Inc.	25
#8	Canon Medical Systems Corporation	24
#9	Toshiba Medical Systems Corporation	23
#10	Kla-tencor Corporation	22
#11	Varex Imaging Corporation	22
#12	Carl Zeiss SMT GmbH	21
#13	Excillum AB	20
#14	Shanghai United Imaging Healthcare Co., Ltd.	19
#15	GE Precision Healthcare LLC	18
#16	Varian Medical Systems, Inc.	18
#17	Trumpf Lasersystems for Semiconductor Manufacturing GmbH	17
#18	KLA Corporation	15
#19	Siemens Healthineers AG	15
#20	Canon Anelva Corporation	14

Footprint here vs. claim strategy

Each dot is a leading H05G 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.

Top 14 H05G assignees by class footprint. Bubble size = patents in H05G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near H05G's 2,073-grant footprint

Nationwide nearest neighbors for H05G (#366 of 670 by volume ; lead share 11.8%) - not the H05 parent-class siblings above.

Nearest by grant volume

F24D 2,041 H01C 2,105 B31B 2,038 G09C 2,112

Nearest by lead-assignee share

B62K 11.9% B65F 11.8% H01L 11.9% B60C 11.7%

Questions about H05G

Which company holds the most patents in H05G?

Gigaphoton Inc. leads H05G with 245 patents (11.8% of the subclass). By PatentsView assignee type, foreign corporations account for 77% of class grants.

Which H05G assignees grew fastest recently?

Among assignees with ≥5 grants in H05G, Siemens Healthineers AG shows the highest company-wide grant multiple (222x: 0 grants in 2019–2021 → 222 in 2022–2024) while holding 15 patents in this subclass. Growth is company-wide, not class-only.

How does H05G compare inside parent class H05?

Inside H05 (Electric Techniques NOT Otherwise Provided FOR), H05G ranks #4 of 6 subclasses by grant volume and holds 2.0% of the parent class total. The largest sibling is H05K (62,449 grants).

What to do with this data

H05G in context - here's where to go next.

Gigaphoton Inc. leads H05G with 245 grants in this class. See full portfolio
H05G ranks #366 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 - H05G figures are USPTO PatentsView granted-utility totals for this subclass (2,073 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.