PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Echowell Electronic Co., Ltd

USPTO PatentsView assignee record - 9 granted patents across 9 technology areas, recorded in grant years 2018–2021. 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: H03F (Amplifiers).

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The verdict

According to USPTO PatentsView, Echowell ranks #28,631 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 9 technology areas.

#28,631
of 49,997 US assignees by volume
17th percentile
by Innovation Score (25.4/100)
11.3
avg claims per patent
+250%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R28631 · Foreign Corporation #28,631 · 9 grants

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

  • GRANTS-MICRO 9 grants
  • MID-PACK #28,631/49,997
  • PHOTO-FINISH East Coast Dyes
  • CPC-NARROW H03F · 9 areas
  • INNOV-THIN 25.4/100
  • CLAIMS-PAR 11.3 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-SURGE +250% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: East Coast Dyes, Inc. (±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 Echowell’s 25.4 Innovation Score adds up

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

Innovation-score neighbourhood around Echowell

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

What this shows Echowell's Innovation Score is 25.4/100 (17th percentile 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.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

Does more volume mean deeper claims for Echowell?

Each dot is one of Echowell’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). Echowell’s own 11.3 claims/patent is at or below the 12.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Echowell vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 8.98.999.1 0102030 Granted patents (volume) Avg claims / patent East Coast Dyes, Inc. - 9, 13.78East Coast DyesEasyhome Organization Manufacturing Inc. - 9, 2Easyhome Organiza…Ebara International Corporation - 9, 5.78Ebara Internation…ECC TEC MSJ Incorporated - 9, 19.22ECC TEC MSJ Incor…ECI Pharmaceuticals, LLC - 9, 27.67ECI Pharmaceutica…Ecole Centrale DE Nantes - 9, 10.89Ecole Centrale DE…Ecole Nationale Superieure D'arts ET Metiers (ENSAM) - 9, 12.67Ecole Nationale S…Economic Alchemy Inc. - 9, 19.89Economic AlchemyEchowell Electronic Co., Ltd - 9, 11.33Echowell
Echowell vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Echowell's grants concentrate

Echowell Electronic Co., Ltd is a focused PatentsView assignee: 9 CPC subclasses with 66.7% of grants classified under H03F (Amplifiers). Peak complete grant year is 2020 (4 grants) versus a trough of 1 in 2018. By volume, Echowell sits between East Coast Dyes, Inc. and Economic Alchemy Inc..

Who files at Echowell's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Echowell holds 9 patents at rank #28,620, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Echowell

By rank, the assignees closest to #28,620 in granted patent volume.

Leaders in H03F (Amplifiers)

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

Echowell's Innovation Score vs. every tracked assignee

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

25 17th percentile higher than 17% of 49,997 US assignees

This assignee 0 100 every tracked assignee, bucketed by value

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

012345 2018201920202021 3
USPTO utility patent grants by year · 2018–2021

Grants by year

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

View data table
Echowell Electronic Co., Ltd patent grants by year, 2015–2025
Year Patents Granted Share of Period
2018 1 11.1%
2019 1 11.1%
2020 4 44.4%
2021 3 33.3%

Which technologies does Echowell Electronic Co., Ltd patent most?

Top 9 of 9 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

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

  • Echowell Electronic Co., Ltd's lead technology class is H03F (Amplifiers), 66.7% of its portfolio - see every assignee active in that class. Explore H03F
  • Ranked #28,631 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Echowell Electronic Co., Ltd against East Coast Dyes, Inc., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 25.4/100 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

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.