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CPC technology class · G10

G10C - Pianos

Pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards. 183 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

183
US patents granted
#6/8
in G10
0.4%
G10 class share
-5%
5-yr velocity

The verdict

According to USPTO PatentsView, Pianos ranks #604 of 670 CPC technology areas - 183 US patents granted since 2015, with recorded grant volume down 5% over five years.

#604
of 670 CPC technology areas
183
US patents granted, 2015–2025
Yamaha
leading assignee (68)
-5%
grant velocity, last 5 yrs

How tightly G10C concentrates

Yamaha Corporation holds 37.2% of G10C's recorded grants (68 of 183) - 42 more than Kabushiki Kaisha Kawai Gakki Seisakusho. Across complete PatentsView years, the class peaked in 2020 at 34 grants and bottomed in 2024 at 5 (+580% peak-over-trough). Equal-window velocity 2020–2024 vs 2015–2019: -5% (83 vs 87 grants).

Leaderboard read

G10C concentration, lead at 37.2%

Yamaha Corporation leads this historical grant record at 37.2% of G10C - foreign corporation assignees hold 98% of class grants (122 of 124). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
37.2%

68 of 183 grants

Top three share
57.4%

of the class's recorded grants

Lead over #2
42

more grants than Kabushiki Kaisha Kawai Gakki Seisakusho

Where G10C sits inside G10

Among 8 subclasses in G10 (Musical INSTRUMENTS; Acoustics), G10C ranks #6 and holds 0.4% of the parent class's 47,643 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

G10L 35,471 G10K 7,488 G10H 3,197 G10D 828 G10G 395 G10F 54 G10B 27

Rising assignees active in G10C

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 Roland Corporation 2.06x 50 → 103 company-wide · 11 in G10C
  2. #2 Yamaha Corporation 0.61x 457 → 280 company-wide · 68 in G10C
  3. #3 Kabushiki Kaisha Kawai Gakki Seisakusho 0.58x 12 → 7 company-wide · 26 in G10C
  4. #4 Sunland Information Technology Co., Ltd. 0.43x 21 → 9 company-wide · 11 in G10C

G10C grants by year, peak 2020 (34)

US utility-patent grants per year in G10C, 2015–2025 - recent five years are down 5% versus 2015–2019.

010203040 20152016201720182019202020212022202320242025 11

Who leads G10C?

The 12 most active assignees in Pianos, Harpsichords, Spinets OR Similar Stringed Musical Instruments With ONE OR More Keyboards - wider bars mean more grants

patents

What this shows Yamaha is the most active filer in G10C, holding 68 of the 183 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 G10C
Rank Company Patents in G10C
#1 Yamaha Corporation 68
#2 Kabushiki Kaisha Kawai Gakki Seisakusho 26
#3 Roland Corporation 11
#4 Sunland Information Technology Co., Ltd. 11
#5 Kawai Musical Instruments Manufacturing Co., Ltd. 4
#6 Steinway Musical Instruments, Inc. 2
#7 Ableton AG 2

Footprint here vs. claim strategy

Each dot is a leading G10C 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 7 G10C assignees by class footprint. Bubble size = patents in G10C. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 7 data points (bubble-sized by third dimension). 6810121416 -20020406080 Patents in G10C Avg claims / patent (company-wide) YamahaKawai Gakki SeisakushoRolandSunland Information…Kawai Musical…Steinway Musical…Ableton
Top 7 G10C assignees by class footprint. Bubble size = patents in G10C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Questions about G10C

Which company holds the most patents in G10C?
Yamaha Corporation leads G10C with 68 patents (37.2% of the subclass). By PatentsView assignee type, foreign corporations account for 98% of class grants.
Which G10C assignees grew fastest recently?
Among assignees with ≥5 grants in G10C, Roland Corporation shows the highest company-wide grant multiple (2.06x: 50 grants in 2019–2021 → 103 in 2022–2024) while holding 11 patents in this subclass. Growth is company-wide, not class-only.
How does G10C compare inside parent class G10?
Inside G10 (Musical INSTRUMENTS; Acoustics), G10C ranks #6 of 8 subclasses by grant volume and holds 0.4% of the parent class total. The largest sibling is G10L (35,471 grants).

What to do with this data

G10C in context - here's where to go next.

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

Methodology - G10C figures are USPTO PatentsView granted-utility totals for this subclass (183 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.