CPC technology class · B63

B63B - Ships Or Other Waterborne Vessels

Ships or other waterborne vessels; equipment for shipping. 6,790 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

6,790
US patents granted: #1/5
in B63: 51.0%
B63 class share: +10%
5-yr velocity

The verdict

According to USPTO PatentsView, Ships Or Other Waterborne Vessels ranks #212 of 670 CPC technology areas - 6,790 US patents granted since 2015, with recorded grant volume up 10% over five years.

#212
of 670 CPC technology areas: 6,790
US patents granted, 2015–2025: Brunswick
leading assignee (196): +10%
grant velocity, last 5 yrs

How B63B's grant cadence moved

Between 2020–2024, B63B recorded 3,198 grants versus 2,908 in 2015–2019 (+10% equal-window velocity). Across complete years, output peaked in 2024 at 706 grants and bottomed in 2015 at 479 (+47% peak-over-trough). Lead assignee Brunswick Corporation holds 2.9% of the class ; the top three share 7.0%.

Leaderboard read

B63B concentration, lead at 2.9%

Brunswick Corporation leads this historical grant record at 2.9% of B63B - foreign corporation assignees hold 50% of class grants (1,866 of 3,699). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 2.9%
Top three share: 7.0%
Lead over #2: 55

Where B63B sits inside B63

Among 5 subclasses in B63 (Ships OR Other Waterborne VESSELS; Related Equipment), B63B ranks #1 and holds 51.0% of the parent class's 13,303 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B63H 3,529 B63C 1,244 B63G 1,181 B63J 559

Rising assignees active in B63B

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 Kawasaki Motors, Ltd. 146x 0 → 146 company-wide · 13 in B63B
#2 Navico, Inc. 38x 0 → 38 company-wide · 17 in B63B
#3 Guandong Ocean University 25x 1 → 25 company-wide · 5 in B63B
#4 Taiga Motors Inc. 19x 0 → 19 company-wide · 8 in B63B
#5 Wavetamer LLC 15x 0 → 15 company-wide · 23 in B63B

B63B grants by year, peak 2024 (706)

US utility-patent grants per year in B63B, 2015–2025 - recent five years are up 10% versus 2015–2019.

Brunswick

196
United States of…

141
Yamaha Hatsudoki

140
Itrec B V

83
Mastercraft Boat

63
Furuno Electric

51
Pgs Geophysical As

49
Daewoo Shipbuilding &…

49
Navico Holding As

47
Single Buoy Moorings

44
Gaztransport Et…

39
Bombardier Recreationa…

38

What this shows Brunswick is the most active filer in B63B, holding 196 of the 6,790 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass B63B
Rank	Company	Patents in B63B
#1	Brunswick Corporation	196
#2	United States of America as represented by the Secretary of the Air Force	141
#3	Yamaha Hatsudoki Kabushiki Kaisha	140
#4	Itrec B.V.	83
#5	MasterCraft Boat Company, LLC	63
#6	Furuno Electric Company Limited	51
#7	PGS Geophysical AS	49
#8	Daewoo Shipbuilding & Marine Engineering Co., Ltd.	49
#9	Navico Holding AS	47
#10	Single Buoy Moorings Inc.	44
#11	Gaztransport ET Technigaz	39
#12	Bombardier Recreational Products Inc.	38
#13	Dalian University of Technology	37
#14	Lone Gull Holdings, Ltd.	33
#15	Saipem S.P.A.	32
#16	Skier's Choice, Inc.	32
#17	Thales	31
#18	Samsung Heavy IND. Co., Ltd.	28
#19	Technip France	27
#20	CGG Services SAS	26

Footprint here vs. claim strategy

Each dot is a leading B63B 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 B63B assignees by class footprint. Bubble size = patents in B63B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B63B's 6,790-grant footprint

Nationwide nearest neighbors for B63B (#212 of 670 by volume ; lead share 2.9%) - not the B63 parent-class siblings above.

Nearest by grant volume

B81B 6,733 B60G 6,732 C21D 6,851 A61J 6,855

Nearest by lead-assignee share

B03B 2.9% B08B 2.9% C12R 2.9% F15B 2.9%

Questions about B63B

Which company holds the most patents in B63B?

Brunswick Corporation leads B63B with 196 patents (2.9% of the subclass). By PatentsView assignee type, foreign corporations account for 50% of class grants.

Which B63B assignees grew fastest recently?

Among assignees with ≥5 grants in B63B, Kawasaki Motors, Ltd. shows the highest company-wide grant multiple (146x: 0 grants in 2019–2021 → 146 in 2022–2024) while holding 13 patents in this subclass. Growth is company-wide, not class-only.

How does B63B compare inside parent class B63?

Inside B63 (Ships OR Other Waterborne VESSELS; Related Equipment), B63B ranks #1 of 5 subclasses by grant volume and holds 51.0% of the parent class total. The largest sibling is B63H (3,529 grants).

What to do with this data

B63B in context - here's where to go next.

Brunswick Corporation leads B63B with 196 grants in this class. See full portfolio
B63B ranks #212 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B63, the largest sibling subclass is B63H with 3,529 grants. Explore B63H

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

Methodology - B63B figures are USPTO PatentsView granted-utility totals for this subclass (6,790 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.