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CPC technology class · B01

B01B - Boiling

Boiling; boiling apparatus ; ; evaporation; evaporation apparatus. 124 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

124
US patents granted
B01
Parent CPC class
20
Active assignees
+58%
5-yr velocity

The verdict

Boiling ranks #617 of 670 CPC technology areas - 124 US patents granted since 2015, with filing up 58% over five years.

#617
of 670 CPC technology areas
124
US patents granted, 2015–2025
Numerical Design
leading assignee (8)
+58%
filing velocity, last 5 yrs
Top assignee: Numerical Design, Inc. (8 patents)

CPC subclass B01B - BOILING; BOILING APPARATUS ; ; EVAPORATION; EVAPORATION APPARATUS - covers 124 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B01 (PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL). See our CPC classification guide for how the system works.

The competitive landscape in B01B is shaped by 20 distinct companies actively filing in this space. Numerical Design, Inc. leads with 8 patents, followed by Rasirc, Inc. at 4 grants and Smiths Detection-watford Limited at 3.

Filing activity in B01B is up 58% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is B01B innovation accelerating?

US utility-patent grants per year in B01B, 2015–2025 - recent five years are up 58% versus 2015–2019.

0510152025 20152016201720182019202020212022202320242025 3

Who leads B01B?

The 12 most active assignees in BOILING; BOILING APPARATUS ; ; EVAPORATION; EVAPORATION APPARATUS - wider bars mean more grants

patents

What this shows Numerical Design is the most active filer in B01B, holding 8 of the 124 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 B01B
Rank Company Patents in B01B
#1 Numerical Design, Inc. 8
#2 Rasirc, Inc. 4
#3 Smiths Detection-watford Limited 3
#4 Ankom Technology Corporation 3
#5 Advanced Digital Broadcast S.a. 2
#6 Alexza Pharmaceuticals, Inc. 2
#7 XEDA International S.a. 2
#8 E3 Solutions, Llc 2
#9 Nuvera Fuel Cells, Llc 1
#10 Hutzler Manufacturing Co., Inc. 1
#11 Daniel Measurement And Control, Inc. 1
#12 Sango Co., Ltd. 1
#13 Netzsch-gerätebau Gmbh 1
#14 Smiss Technology Co., Ltd. 1
#15 Purpose Co., Ltd. 1
#16 Vahterus OY 1
#17 Hans Heidolph Gmbh 1
#18 Singulus Technologies Ag 1
#19 MICO Ltd. 1
#20 Hydro-thermal Corporation 1

About This Class

CPC subclass B01B belongs to class B01.

124 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 B01B 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 B01B assignees by class footprint. Bubble size = patents in B01B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 B01B assignees by class footprint. Bubble size = patents in B01B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 0102030 0246810 Patents in B01B Avg claims / patent (company-wide) Numerical DesignRasircSmiths Detection-watf…Ankom TechnologyAdvanced Digital Broa…Alexza PharmaceuticalsXeda InternationalE3 SolutionsNuvera Fuel CellsHutzler ManufacturingDaniel Measurement an…SangoNetzsch-gerätebauSmiss Technology
Top 14 B01B assignees by class footprint. Bubble size = patents in B01B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B01B?
CPC subclass B01B covers BOILING; BOILING APPARATUS ; ; EVAPORATION; EVAPORATION APPARATUS. It belongs to CPC class B01 (PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL), with 124 US utility patents granted since 2015.
How many patents have been filed in B01B?
124 US utility patents were granted in CPC subclass B01B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B01B?
Numerical Design, Inc. leads B01B with 8 patents, making it the most active assignee in this technology area.
How is patent data for B01B 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., B01) is a broad technology category. Subclasses like B01B 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.