PlainPatent

CPC technology class · A21

A21B - Bakers' Ovens

Bakers' ovens; machines or equipment for baking. 546 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

546
US patents granted
A21
Parent CPC class
20
Active assignees
+19%
5-yr velocity

The verdict

Bakers' Ovens ranks #531 of 670 CPC technology areas - 546 US patents granted since 2015, with filing up 19% over five years.

#531
of 670 CPC technology areas
546
US patents granted, 2015–2025
Samsung
leading assignee (19)
+19%
filing velocity, last 5 yrs
Top assignee: Samsung Electronics Co., Ltd. (19 patents)

CPC subclass A21B - BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING - covers 546 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class A21 (BAKING; EDIBLE DOUGHS). See our CPC classification guide for how the system works.

The competitive landscape in A21B is shaped by 20 distinct companies actively filing in this space. Samsung Electronics Co., Ltd. leads with 19 patents, followed by Alto-shaam, Inc. at 15 grants and Inventio Ag at 14.

Filing activity in A21B is up 19% 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 A21B innovation accelerating?

US utility-patent grants per year in A21B, 2015–2025 - recent five years are up 19% versus 2015–2019.

354045505560 20152016201720182019202020212022202320242025 37

Who leads A21B?

The 12 most active assignees in BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING - wider bars mean more grants

patents

What this shows Samsung is the most active filer in A21B, holding 19 of the 546 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 A21B
Rank Company Patents in A21B
#1 THE Middleby Corporation 18
#2 Alto-shaam, Inc. 15
#3 Inventio Ag 14
#4 Duke Manufacturing Co. 8
#5 TPS IP, Llc 8
#6 Electrolux HOME Products, Inc. 7
#7 Tsann Kuen (zhangzhou) Enterprise Co., Ltd. 7
#8 Electrolux Professional, Inc. 6
#9 HAAS FOOD Equipment Gmbh 6
#10 Unitherm FOOD Systems, Llc 6
#11 Food Machinery Engineering, LMTD 6
#12 R. Weiss Verpackungstechnik Gmbh & Co. KG 6
#13 Revent International AB 6
#14 A. J. Antunes & Co. 5
#15 AMF Automation Technologies, Llc 5
#16 Ten Wing Scientific Co., Ltd. 5
#17 Automation Tech, Llc 5
#18 Mecatherm 5
#19 Prince Castle Llc 4
#20 Marmon Foodservice Technologies, Inc. 4

About This Class

CPC subclass A21B belongs to class A21.

546 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 A21B 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 A21B assignees by class footprint. Bubble size = patents in A21B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 A21B assignees by class footprint. Bubble size = patents in A21B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 05101520 Patents in A21B Avg claims / patent (company-wide) The MiddlebyAlto-shaamInventioDuke ManufacturingTps IpElectrolux Home Produ…Tsann Kuen (Zhangzhou…Electrolux Profession…Haas Food EquipmentUnitherm Food SystemsFood Machinery Engine…R Weiss Verpackungste…Revent International…A J Antunes &
Top 14 A21B assignees by class footprint. Bubble size = patents in A21B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class A21B?
CPC subclass A21B covers BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING. It belongs to CPC class A21 (BAKING; EDIBLE DOUGHS), with 546 US utility patents granted since 2015.
How many patents have been filed in A21B?
546 US utility patents were granted in CPC subclass A21B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in A21B?
Samsung Electronics Co., Ltd. leads A21B with 19 patents, making it the most active assignee in this technology area.
How is patent data for A21B 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., A21) is a broad technology category. Subclasses like A21B 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.