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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 grant trajectory.

124
US patents granted
#5/5
in B01
0.1%
B01 class share
+52%
5-yr velocity

The verdict

According to USPTO PatentsView, Boiling ranks #617 of 670 CPC technology areas - 124 US patents granted since 2015, with recorded grant volume up 52% over five years.

#617
of 670 CPC technology areas
124
US patents granted, 2015–2025
Numerical Design
leading assignee (8)
+52%
grant velocity, last 5 yrs

How B01B's grant cadence moved

Between 2020–2024, B01B recorded 73 grants versus 48 in 2015–2019 (+52% equal-window velocity). Across complete years, output peaked in 2023 at 22 grants and bottomed in 2017 at 8 (+175% peak-over-trough). Lead assignee Numerical Design, Inc. holds 6.5% of the class ; the top three share 12.1%.

Leaderboard read

B01B concentration, lead at 6.5%

Numerical Design, Inc. leads this historical grant record at 6.5% of B01B - us corporation assignees hold 59% of class grants (24 of 41). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
6.5%

8 of 124 grants

Top three share
12.1%

of the class's recorded grants

Lead over #2
4

more grants than Rasirc, Inc.

Where B01B sits inside B01

Among 5 subclasses in B01 (Physical OR Chemical Processes OR Apparatus IN General), B01B ranks #5 and holds 0.1% of the parent class's 103,400 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B01D 43,096 B01J 35,809 B01L 15,586 B01F 8,785

Rising assignees active in B01B

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. #1 Numerical Design, Inc. 1.33x 3 → 4 company-wide · 8 in B01B

B01B grants by year, peak 2023 (22)

US utility-patent grants per year in B01B, 2015–2025 - recent five years are up 52% 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

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). Scatter plot of 14 data points (bubble-sized by third dimension). 0102030 0246810 Patents in B01B Avg claims / patent (company-wide) Numerical DesignRasircSmiths Detection-watfo…Ankom TechnologyAdvanced Digital…Alexza PharmaceuticalsXeda InternationalE3 SolutionsNuvera Fuel CellsHutzler ManufacturingDaniel Measurement…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).

Questions about B01B

Which company holds the most patents in B01B?
Numerical Design, Inc. leads B01B with 8 patents (6.5% of the subclass). By PatentsView assignee type, us corporations account for 59% of class grants.
Which B01B assignees grew fastest recently?
Among assignees with ≥5 grants in B01B, Numerical Design, Inc. shows the highest company-wide grant multiple (1.33x: 3 grants in 2019–2021 → 4 in 2022–2024) while holding 8 patents in this subclass. Growth is company-wide, not class-only.
How does B01B compare inside parent class B01?
Inside B01 (Physical OR Chemical Processes OR Apparatus IN General), B01B ranks #5 of 5 subclasses by grant volume and holds 0.1% of the parent class total. The largest sibling is B01D (43,096 grants).

What to do with this data

B01B in context - here's where to go next.

  • Numerical Design, Inc. leads B01B with 8 grants in this class. See full portfolio
  • B01B ranks #617 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class B01, the largest sibling subclass is B01D with 43,096 grants. Explore B01D

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - B01B figures are USPTO PatentsView granted-utility totals for this subclass (124 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.