PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Beijing Zehua Chemical Engineering Co., Ltd.

USPTO PatentsView assignee record - 7 granted patents across 3 technology areas, recorded in grant years 2017–2024. 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, Beijing ranks #34,440 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 3 technology areas.

#34,440
of 49,997 US assignees by volume
34th percentile
by Innovation Score (30.3/100)
17.1
avg claims per patent
+33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34440 · Foreign Corporation #34,440 · 7 grants

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

  • GRANTS-MICRO 7 grants
  • MID-PACK #34,440/49,997
  • PHOTO-FINISH Beijing NED+AR…
  • CPC-NARROW B01D · 3 areas
  • INNOV-THIN 30.3/100
  • CLAIMS-RICH 17.1 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-UP +33% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Beijing NED+AR Display Technology Co., Ltd. (±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 Beijing’s 30.3 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 Beijing

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

score

What this shows Beijing's Innovation Score is 30.3/100 (34th 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 Beijing?

Each dot is one of Beijing’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). Beijing’s own 17.1 claims/patent is ABOVE the 12.6 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Beijing 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 6.97.07.077.07.07.1 0510152025 Granted patents (volume) Avg claims / patent Beijing NED+AR Display Technology Co., Ltd. - 7, 18.29Beijing NED+AR Di…Beijing Netqin Technology Co., Ltd. - 7, 7Beijing Netqin Te…Beijing Shenchuang Century Information Technology Co., Ltd - 7, 5.57Beijing Shenchuan…Beijing Urban Construction Design & Development Group Co., Limited - 7, 8.57Beijing Urban Con…Belhaven BioPharma Inc. - 7, 19.29Belhaven BiopharmaBelite Bio, Inc - 7, 17.29Belite BioBell Automotive Products, Inc. - 7, 12.57Bell Automotive P…Bell Semiconductor, LLC - 7, 19.43Bell SemiconductorBeijing Zehua Chemical Engineering Co., Ltd. - 7, 17.14Beijing Zehua Che…
Beijing vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Beijing's grants concentrate

Beijing Zehua Chemical Engineering Co., Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 57.1% of grants classified under B01D (Separation). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2017. By volume, Beijing sits between Beijing NED+AR Display Technology Co., Ltd. and Bell Semiconductor, LLC.

Beijing's three-year grant acceleration

Beijing Zehua Chemical Engineering Co., Ltd. shows 2 grants in 2022–2024 against only 2 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.

Who files at Beijing's volume?

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

patents

What this shows Beijing holds 7 patents at rank #34,512, 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 Beijing

By rank, the assignees closest to #34,512 in granted patent volume.

Leaders in B01D (Separation)

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

Beijing's Innovation Score vs. every tracked assignee

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

30 34th percentile higher than 34% 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

0.511.522.5 201720182020202120232024 1
USPTO utility patent grants by year · 2017–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table
Beijing Zehua Chemical Engineering Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2017 1 14.3%
2018 2 28.6%
2020 1 14.3%
2021 1 14.3%
2023 1 14.3%
2024 1 14.3%

Which technologies does Beijing Zehua Chemical Engineering Co., Ltd. patent most?

Top 3 of 3 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

Beijing Zehua Chemical Engineering Co., Ltd.'s patent record in context - here's where to go next.

  • Beijing Zehua Chemical Engineering Co., Ltd.'s lead technology class is B01D (Separation), 57.1% of its portfolio - see every assignee active in that class. Explore B01D
  • Ranked #34,440 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Beijing Zehua Chemical Engineering Co., Ltd. against Beijing NED+AR Display Technology Co., Ltd., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 30.3/100 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.