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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 filing trajectory.

2,073
US patents granted
H05
Parent CPC class
20
Active assignees
-6%
5-yr velocity

The verdict

X-ray Technique ranks #366 of 670 CPC technology areas - 2,073 US patents granted since 2015, with filing down 6% over five years.

#366
of 670 CPC technology areas
2,073
US patents granted, 2015–2025
Gigaphoton
leading assignee (245)
-6%
filing velocity, last 5 yrs
Top assignee: Gigaphoton Inc. (245 patents)

CPC subclass H05G - X-RAY TECHNIQUE - covers 2,073 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class H05 (ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR). See our CPC classification guide for how the system works.

The competitive landscape in H05G is shaped by 20 distinct companies actively filing in this space. Gigaphoton Inc. leads with 245 patents, followed by ASML Netherlands B.v. at 233 grants and Siemens Healthcare Limited at 44.

Filing activity in H05G is down 6% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is H05G innovation accelerating?

US utility-patent grants per year in H05G, 2015–2025 - recent five years are down 6% versus 2015–2019.

50100150200250 20152016201720182019202020212022202320242025 92

Who leads H05G?

The 12 most active assignees in X-RAY TECHNIQUE - wider bars mean more grants

patents

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.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
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

About This Class

CPC subclass H05G belongs to class H05.

2,073 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

← All Technology Classes Technology Rankings →

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).

Top 14 H05G assignees by class footprint. Bubble size = patents in H05G. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 10152025 050100150200250300 Patents in H05G Avg claims / patent (company-wide) GigaphotonAsml Netherlands B VSiemens HealthcareMoxtekUshio DenkiNuctechRapiscan SystemsCanon Medical SystemsToshiba Medical Syste…Kla-tencorVarex ImagingCarl Zeiss SmtExcillum AbShanghai United Imagi…
Top 14 H05G assignees by class footprint. Bubble size = patents in H05G. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class H05G?
CPC subclass H05G covers X-RAY TECHNIQUE. It belongs to CPC class H05 (ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR), with 2,073 US utility patents granted since 2015.
How many patents have been filed in H05G?
2,073 US utility patents were granted in CPC subclass H05G between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in H05G?
Gigaphoton Inc. leads H05G with 245 patents, making it the most active assignee in this technology area.
How is patent data for H05G collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., H05) is a broad technology category. Subclasses like H05G provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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.