PlainPatent

CPC technology class · B23

B23P - Metal-working

Metal-working not otherwise provided for; combined operations; universal machine tools. 8,569 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

8,569
US patents granted
B23
Parent CPC class
20
Active assignees
-11%
5-yr velocity

The verdict

Metal-working ranks #184 of 670 CPC technology areas - 8,569 US patents granted since 2015, with filing down 11% over five years.

#184
of 670 CPC technology areas
8,569
US patents granted, 2015–2025
General Electric
leading assignee (368)
-11%
filing velocity, last 5 yrs
Top assignee: General Electric Company (368 patents)

CPC subclass B23P - METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS - covers 8,569 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B23 (MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR). See our CPC classification guide for how the system works.

The competitive landscape in B23P is shaped by 20 distinct companies actively filing in this space. General Electric Company leads with 368 patents, followed by Raytheon Technologies Corporation at 101 grants and Rolls-royce Plc at 87.

Filing activity in B23P is down 11% 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 B23P innovation accelerating?

US utility-patent grants per year in B23P, 2015–2025 - recent five years are down 11% versus 2015–2019.

2004006008001,000 20152016201720182019202020212022202320242025 386

Who leads B23P?

The 12 most active assignees in METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS - wider bars mean more grants

patents

What this shows General Electric is the most active filer in B23P, holding 368 of the 8,569 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 B23P
Rank Company Patents in B23P
#1 United Technologies Corporation 167
#2 Raytheon Technologies Corporation 101
#3 Rolls-royce Plc 87
#4 Mahle International Gmbh 83
#5 DEKA Products Limited Parternship 81
#6 Siemens Energy, Inc. 71
#7 Safran Aircraft Engines 58
#8 Whirlpool Corporation 54
#9 Pratt & Whitney Canada Corp. 50
#10 RTX Corporation 47
#11 Snecma 45
#12 Rolls-royce Corporation 40
#13 MTU Aero Engines Ag 39
#14 Kennametal Inc. 38
#15 Aktiebolaget SKF 31
#16 NSK Ltd. 31
#17 Baker Hughes Holdings Llc 30
#18 Lennox Industries Inc. 26
#19 ASIA Vital Components Co., Ltd. 26
#20 Temper Axle Products Corporation 25

About This Class

CPC subclass B23P belongs to class B23.

8,569 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 B23P 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 B23P assignees by class footprint. Bubble size = patents in B23P. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 B23P assignees by class footprint. Bubble size = patents in B23P. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 1012141618 050100150200 Patents in B23P Avg claims / patent (company-wide) UnitedRaytheonRolls-royceMahle InternationalDeka Products Partern…Siemens EnergySafran Aircraft Engin…WhirlpoolPratt & Whitney CanadaRtxSnecmaRolls-royceMtu Aero EnginesKennametal
Top 14 B23P assignees by class footprint. Bubble size = patents in B23P. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B23P?
CPC subclass B23P covers METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS. It belongs to CPC class B23 (MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR), with 8,569 US utility patents granted since 2015.
How many patents have been filed in B23P?
8,569 US utility patents were granted in CPC subclass B23P between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B23P?
General Electric Company leads B23P with 368 patents, making it the most active assignee in this technology area.
How is patent data for B23P 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., B23) is a broad technology category. Subclasses like B23P 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.