USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Harmonic Drive Systems Inc.

USPTO PatentsView assignee record - 150 granted patents across 29 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F16H (GEARING).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

150

Total patents granted

CPC technology areas

6.5

Avg claims per patent

+8%

5-year filing velocity

The verdict

Harmonic holds 150 US patents across 29 technology areas, rank #2,591 of 50,000 tracked assignees.

#2,591
of 50,000 US assignees by volume: Top 28%
by Innovation Score (43.6/100): 6.5
avg claims per patent: +8%
filing velocity, last 5 yrs

Portfolio overview

Harmonic Drive Systems Inc. has been granted 150 US utility patents between 2015 and 2025, placing Harmonic Drive Systems Inc. at rank #2,591 across all assignees tracked by PlainPatent. This portfolio spans 29 distinct Cooperative Patent Classification (CPC) subclasses, averaging 6.5 claims per patent with primary concentration in F16H (GEARING). As a Foreign Corporation, Harmonic Drive Systems Inc. is one of the more focused assignees in the PatentsView dataset. By volume, Harmonic sits between Crowdstrike, Inc. (150 patents, rank #2,587) and Qingdao Haier Washing Machine Co., Ltd. (150 patents, rank #2,595) - the closest US assignees by grant volume. The composite Innovation Score of 43.6/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 78 grants, compared with 72 in the 2015–2019 window, a +8% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Harmonic Drive Systems Inc.'s 6.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 29 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Harmonic Drive Systems Inc. against peers pursuing similar technology classes.

Crowdstrike

150
Eberspächer Exhau…

150
Epizyme

150
Goodrich Lighting…

150
Kyoraku

150
Nextracker

150
New Jersey Instit…

150
Qingdao Haier Was…

150
Harmonic Drive Sy… ◀

150

What this shows Harmonic holds 150 patents at rank #2,591, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Harmonic

By rank, the assignees closest to #2,591 in granted patent volume.

Leaders in F16H (Gearing)

Other assignees with the most granted patents in Harmonic's primary technology class.

Harmonic's Innovation Score vs. every tracked assignee

Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)

44 Top 28% higher than 72% of 50,000 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Harmonic Drive Systems Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	16	10.7%
2016	13	8.7%
2017	10	6.7%
2018	12	8.0%
2019	21	14.0%
2020	18	12.0%
2021	20	13.3%
2022	9	6.0%
2023	10	6.7%
2024	11	7.3%
2025	10	6.7%

Which technologies does Harmonic Drive Systems Inc. patent most?

F16H - GEARING 130

F16C - SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 33

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 21

H02K - DYNAMO-ELECTRIC MACHINES 20

G01D - MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 6

F16D - COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES 5

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 4

F16J - PISTONS ; CYLINDERS; SEALINGS 4

G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 4

G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 3

C10M - LUBRICATING COMPOSITIONS ; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION 3

C10N - INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS 3

F02D - CONTROLLING COMBUSTION ENGINES 2

F02B - INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 2

F16B - DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 2

Top 15 of 29 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Growing

Where it ranks

Overall rank by patents

#2,591

Across all tracked assignees

Innovation Score

43.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Harmonic Drive Systems Inc. hold?

Harmonic Drive Systems Inc. holds 150 US granted patents filed between 2015 and 2025, spanning 29 technology areas.

What is Harmonic Drive Systems Inc.'s Innovation Score?

Harmonic Drive Systems Inc. has an Innovation Score of 43.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Harmonic Drive Systems Inc. focus on?

Harmonic Drive Systems Inc.'s top technology area is F16H (GEARING) with 130 patents. The company has filed patents in 29 CPC subclasses total.

Is Harmonic Drive Systems Inc.'s patent filing rate increasing or decreasing?

Harmonic Drive Systems Inc.'s recent filing velocity is +8% compared to the prior five-year period. The company is maintaining or growing its patent output.

What does claim depth mean for Harmonic Drive Systems Inc.'s patents?

Harmonic Drive Systems Inc.'s patents average 6.5 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Harmonic Drive Systems Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

How to use this portfolio

Harmonic's 150 grants land it in the top 28% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Harmonic ranks #2,591 of 50,000. Top 50 holders
Most of this portfolio concentrates in F16H - see who else leads that technology area. F16H leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

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. Data current as of May 2026.