PlainPatent

CPC technology class · B63

B63H - Marine Propulsion OR Steering

Marine propulsion or steering. 3,529 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

3,529
US patents granted
B63
Parent CPC class
20
Active assignees
+37%
5-yr velocity

The verdict

Marine Propulsion OR Steering ranks #295 of 670 CPC technology areas - 3,529 US patents granted since 2015, with filing up 37% over five years.

#295
of 670 CPC technology areas
3,529
US patents granted, 2015–2025
Brunswick
leading assignee (510)
+37%
filing velocity, last 5 yrs
Top assignee: Brunswick Corporation (510 patents)

CPC subclass B63H - MARINE PROPULSION OR STEERING - covers 3,529 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B63 (SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT). See our CPC classification guide for how the system works.

The competitive landscape in B63H is shaped by 20 distinct companies actively filing in this space. Brunswick Corporation leads with 510 patents, followed by Yamaha Hatsudoki Kabushiki Kaisha at 401 grants and Suzuki Motor Corporation at 97.

Filing activity in B63H is up 37% 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 B63H innovation accelerating?

US utility-patent grants per year in B63H, 2015–2025 - recent five years are up 37% versus 2015–2019.

200250300350400 20152016201720182019202020212022202320242025 327

Who leads B63H?

The 12 most active assignees in MARINE PROPULSION OR STEERING - wider bars mean more grants

patents

What this shows Brunswick is the most active filer in B63H, holding 510 of the 3,529 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 B63H
Rank Company Patents in B63H
#1 Brunswick Corporation 510
#2 Yamaha Hatsudoki Kabushiki Kaisha 401
#3 Suzuki Motor Corporation 97
#4 BRP US Inc. 43
#5 Rondo Energy, Inc. 41
#6 Daewoo Shipbuilding & Marine Engineering Co., Ltd. 39
#7 Yanmar Holdings Co., Ltd. 35
#8 Navico Holding AS 32
#9 Marine Canada Acquisition Inc. 31
#10 Torqeedo Gmbh 27
#11 Garmin Switzerland Gmbh 26
#12 Furuno Electric Company Limited 24
#13 Liquid Robotics, Inc. 22
#14 Johnson Outdoors Inc. 20
#15 Volvo Penta Corporation 20
#16 GE Energy Power Conversion Technology Limited 18
#17 Mastercraft Boat Company, Llc 18
#18 Seven Marine, Llc 18
#19 Showa Corporation 17
#20 Kai Concepts, Llc 17

About This Class

CPC subclass B63H belongs to class B63.

3,529 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 B63H 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 B63H assignees by class footprint. Bubble size = patents in B63H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 B63H assignees by class footprint. Bubble size = patents in B63H. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 010203040 -2000200400600 Patents in B63H Avg claims / patent (company-wide) BrunswickYamaha HatsudokiSuzuki MotorBrp UsRondo EnergyDaewoo Shipbuilding &…Yanmar HoldingsNavico Holding AsMarine Canada Acquisi…TorqeedoGarmin SwitzerlandFuruno ElectricLiquid RoboticsJohnson Outdoors
Top 14 B63H assignees by class footprint. Bubble size = patents in B63H. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B63H?
CPC subclass B63H covers MARINE PROPULSION OR STEERING. It belongs to CPC class B63 (SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT), with 3,529 US utility patents granted since 2015.
How many patents have been filed in B63H?
3,529 US utility patents were granted in CPC subclass B63H between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in B63H?
Brunswick Corporation leads B63H with 510 patents, making it the most active assignee in this technology area.
How is patent data for B63H 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., B63) is a broad technology category. Subclasses like B63H 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.