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).

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Qingdao ranks #5,623 of 50,000 tracked US assignees by granted-patent volume, with 61 patents across 5 technology areas.

#5,623
of 50,000 US assignees by volume
Top 80%
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 #5,623/50,000
  • 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.

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 Ecopure Filter Co., Ltd. stamps GRANTS-SMALL, UPPER-Q, PHOTO-FINISH, CPC-NARROW, INNOV-THIN, CLAIMS-SPARSE, TYPE-FRNCORP, VEL-SURGE, BOOK-FULL. Volume places it #5,623 of 50,000; Innovation Score 26.2/100 sits in the top 80% of the PatentsView-derived corpus. Closest grant-volume peer on this plate is OP Solutions, Llc (±0 grants).

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

Portfolio overview

Qingdao Ecopure Filter Co., Ltd. has been granted 61 US utility patents between 2018 and 2025, placing Qingdao Ecopure Filter Co., Ltd. at #5,623 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 5 distinct Cooperative Patent Classification (CPC) subclasses, averaging 2.6 claims per patent with primary concentration in B01D (SEPARATION). As a Foreign Corporation, Qingdao Ecopure Filter Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Qingdao sits between OP Solutions, Llc (61 patents, rank #5,617) and Ring Container Technologies, Llc (61 patents, rank #5,625) - the closest US assignees by grant volume. The composite Innovation Score of 26.2/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 35 grants, compared with 20 in the 2015–2019 window, a +75% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Qingdao Ecopure Filter Co., Ltd.'s 2.6 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 5 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

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).

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 Top 80% higher than 20% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). This entry sits in this band. 30–40: 15,294 US assignees (31%). Above this entry. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. 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

Where it ranks

Overall rank by patents

#5,623

of 50,000 tracked assignees

Innovation Score

26.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?
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.