Where does Erae AMS Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Erae AMS Co., Ltd. ranks #13,974 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Erae AMS Co., Ltd. hold?

Erae AMS Co., Ltd. holds 21 US utility patents granted between 2018 and 2025, spanning 26 technology areas.

What is Erae AMS Co., Ltd.'s Innovation Score?

Erae AMS Co., Ltd. has an Innovation Score of 39.4 out of 100 (top 38% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Erae AMS Co., Ltd. focus on?

Erae AMS Co., Ltd.'s top technology area is F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes) with 9 patents, ranking #164 of 1,090 assignees active in that subclass. Grants appear in 26 CPC subclasses total.

Is Erae AMS Co., Ltd.'s patent grant rate increasing or decreasing?

Erae AMS Co., Ltd.'s recent grant velocity is +57% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Erae AMS Co., Ltd.'s patents?

Erae AMS Co., Ltd.'s patents average 9.4 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Erae AMS Co., Ltd. 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Erae AMS Co., Ltd.

USPTO PatentsView assignee record - 21 granted patents across 26 technology areas, recorded in grant years 2018–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Erae ranks #13,974 of 49,997 tracked US assignees by granted-patent volume, with 21 patents across 26 technology areas.

#13,974
of 49,997 US assignees by volume: Top 38%
by Innovation Score (39.4/100): 9.4
avg claims per patent: +57%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R13974 · Foreign Corporation #13,974 · 21 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 21 grants
MID-PACK #13,974/49,997
PHOTO-FINISH Ecole Normale…
CPC-FOCUS F16D · 26 areas
INNOV-THIN 39.4/100
CLAIMS-PAR 9.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +57% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Ecole Normale Superieure De Cachan (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Erae’s 39.4 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 10.7 pts (27%) Velocity 5.0 pts (13%) Breadth 18.0 pts (46%) Claim depth 5.7 pts (14%)

Qualcomm Incorporated · highest

85
Erae AMS · this assignee

39
3D Lighting… · lowest

7

What this shows Erae's Innovation Score is 39.4/100 (top 38% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Erae?

Each dot is one of Erae’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Erae’s own 9.4 claims/patent is at or below the 17.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Erae vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Erae's grants concentrate

Erae AMS Co., Ltd. is a focused PatentsView assignee: 26 CPC subclasses with 42.9% of grants classified under F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes). Peak complete grant year is 2018 (4 grants) versus a trough of 1 in 2023. By volume, Erae sits between Emcore Corporation and Electronic Imaging Services, Inc..

Erae's three-year grant acceleration

Erae AMS Co., Ltd. shows 6 grants in 2022–2024 against only 8 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Emcore

21
Emergency Alert S…

21
Empi

21
Epigenomics

21
Ewald DÖRKEN

21
Exela Pharma Scie…

21
Ecole Normale Sup…

21
Imaging Services

21
Erae AMS ◀

21

What this shows Erae holds 21 patents at rank #13,963, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Erae

By rank, the assignees closest to #13,963 in granted patent volume.

Leaders in F16D (Couplings FOR Transmitting Rotation)

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

Erae's Innovation Score vs. every tracked assignee

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

39 Top 38% higher than 62% of 49,997 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 · 2018–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Erae AMS Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	4	19.0%
2019	3	14.3%
2020	2	9.5%
2021	3	14.3%
2022	3	14.3%
2023	1	4.8%
2024	2	9.5%
2025partial year	3	14.3%

Which technologies does Erae AMS Co., Ltd. patent most?

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 9

B62D - Motor VEHICLES; Trailers 6

F16H - Gearing 5

B60T - Vehicle Brake Control Systems OR Parts THEREOF; Brake Control Systems OR Parts Thereof, IN General ; Arrangement OF Braking Elements ON Vehicles IN GENERAL; Portable Devices FOR Preventing Unwanted Movement OF VEHICLES; Vehicle Modifications TO Facilitate Cooling OF Brakes 5

F16C - SHAFTS; Flexible SHAFTS; Elements OR Crankshaft MECHANISMS; Rotary Bodies Other Than Gearing ELEMENTS; Bearings 4

H02K - Dynamo-electric Machines 3

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 2

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 2

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 2

B60Y - Indexing Scheme Relating TO Aspects Cross-cutting Vehicle Technology 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

B60B - Vehicle Wheels ; CASTORS; Axles FOR Wheels OR CASTORS; Increasing Wheel Adhesion 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

C21D - Modifying THE Physical Structure OF Ferrous METALS; General Devices FOR Heat Treatment OF Ferrous OR Non-ferrous Metals OR ALLOYS; Making Metal Malleable, e.g. BY Decarburisation OR Tempering 1

B60Q - Arrangement OF Signalling OR Lighting Devices, THE Mounting OR Supporting Thereof OR Circuits Therefor, FOR Vehicles IN General 1

Top 15 of 26 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Erae AMS Co., Ltd.'s patent record in context - here's where to go next.

Erae AMS Co., Ltd.'s lead technology class is F16D (Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes), 42.9% of its portfolio - see every assignee active in that class. Explore F16D
Ranked #13,974 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Erae AMS Co., Ltd. against Emcore Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 39.4/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

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

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

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 by PlainPatent, US Patent Intelligence Editorial Process · 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.