PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Qingdao Ecopure Filter Co., Ltd.

USPTO PatentsView assignee record - 61 granted patents across 5 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: B01D (Separation).

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The verdict

According to USPTO PatentsView, Qingdao ranks #5,623 of 49,997 tracked US assignees by granted-patent volume, with 61 patents across 5 technology areas.

#5,623
of 49,997 US assignees by volume
20th percentile
by Innovation Score (26.2/100)
2.6
avg claims per patent
+75%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5623 · Foreign Corporation #5,623 · 61 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

  • GRANTS-SMALL 61 grants
  • UPPER-Q #5,623/49,997
  • PHOTO-FINISH OP Solutions
  • CPC-NARROW B01D · 5 areas
  • INNOV-THIN 26.2/100
  • CLAIMS-SPARSE 2.6 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-SURGE +75% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: OP Solutions, LLC (±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 Qingdao’s 26.2 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 Qingdao

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

score

What this shows Qingdao's Innovation Score is 26.2/100 (20th 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 Qingdao?

Each dot is one of Qingdao’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). Qingdao’s own 2.6 claims/patent is at or below the 14.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Qingdao 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 60.961.061.06161.061.061.1 0510152025 Granted patents (volume) Avg claims / patent OP Solutions, LLC - 61, 9.66OP SolutionsPaul Wurth S.A. - 61, 14.25Paul WurthPruitt Tool & Supply Co. - 61, 16.23Pruitt Tool & Sup…Position Imaging, Inc. - 61, 18.26Position ImagingQuantumScape Corporation - 61, 22.02QuantumscapeQumulo, Inc. - 61, 23.07QumuloRaytheon Canada Limited - 61, 13.34Raytheon CanadaRing Container Technologies, LLC - 61, 10.69Ring ContainerQingdao Ecopure Filter Co., Ltd. - 61, 2.64Qingdao Ecopure F…
Qingdao vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Qingdao's grants concentrate

Qingdao Ecopure Filter Co., Ltd. is a focused PatentsView assignee: 5 CPC subclasses with 11.5% of grants classified under B01D (Separation). Peak complete grant year is 2020 (19 grants) versus a trough of 2 in 2021. By volume, Qingdao sits between OP Solutions, LLC and Ring Container Technologies, LLC.

Qingdao's three-year grant acceleration

From 2019–2021 to 2022–2024, Qingdao Ecopure Filter Co., Ltd. moved from 38 to 14 grants (0.37x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Who files at Qingdao's volume?

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

patents

What this shows Qingdao holds 61 patents at rank #5,621, 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 Qingdao

By rank, the assignees closest to #5,621 in granted patent volume.

Leaders in B01D (Separation)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Qingdao, neither rank-band nor same-CPC leaders (those blocks stay above). In B01D (Separation), Qingdao ranks #685 of 3,536 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (26 here).

QuSpin Inc. 26 Meril Life Sciences PVT Ltd 26 Immy Inc. 26 Magma Giessereitechnologie GmbH 26

Similar claim depth

Nearest assignees by average claims per patent (2.6 here).

E. Mishan & Sons, Inc. 2.6 avg AIR Cool Industrial Co., Ltd. 2.6 avg Zhejiang Prulde Electric Appliance Co., Ltd. 2.6 avg Suncast Technologies, LLC 2.6 avg

Qingdao's Innovation Score vs. every tracked assignee

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

26 20th percentile higher than 20% 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

05101520 20182019202020212022202320242025 6
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
Qingdao Ecopure Filter Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2018 3 4.9%
2019 17 27.9%
2020 19 31.1%
2021 2 3.3%
2022 2 3.3%
2023 2 3.3%
2024 10 16.4%
2025partial year 6 9.8%

Which technologies does Qingdao Ecopure Filter Co., Ltd. patent most?

Top 5 of 5 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

Qingdao Ecopure Filter Co., Ltd.'s patent record in context - here's where to go next.

  • Qingdao Ecopure Filter Co., Ltd.'s lead technology class is B01D (Separation), 11.5% of its portfolio - see every assignee active in that class. Explore B01D
  • Ranked #5,623 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Qingdao Ecopure Filter Co., Ltd. against OP Solutions, LLC, an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 26.2/100 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.