PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Zhejiang Dunan Artificial Environment Co., Ltd.

USPTO PatentsView assignee record - 38 granted patents across 19 technology areas, recorded in grant years 2017–2025. 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: F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING).

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Zhejiang ranks #8,519 of 50,000 tracked US assignees by granted-patent volume, with 38 patents across 19 technology areas.

#8,519
of 50,000 US assignees by volume
Top 5%
by Innovation Score (57.1/100)
15.1
avg claims per patent
+1050%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8519 · Foreign Corporation #8,519 · 38 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

  • GRANTS-SMALL 38 grants
  • UPPER-Q #8,519/50,000
  • PHOTO-FINISH Wm T Burnett IP
  • CPC-FOCUS F16K · 19 areas
  • INNOV-PAR 57.1/100
  • CLAIMS-RICH 15.1 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • VEL-SURGE +1050% vel
  • BOOK-FULL 10/10 fields

Nearest grant-volume peer: Wm. T. Burnett IP, 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 Zhejiang

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

score

What this shows Zhejiang Dunan Artificial Environment Co., Ltd. stamps GRANTS-SMALL, UPPER-Q, PHOTO-FINISH, CPC-FOCUS, INNOV-PAR, CLAIMS-RICH, TYPE-FRNCORP, VEL-SURGE, BOOK-FULL. Volume places it #8,519 of 50,000; Innovation Score 57.1/100 sits in the top 5% of the PatentsView-derived corpus. Closest grant-volume peer on this plate is Wm. T. Burnett IP, Llc (±0 grants).

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

Portfolio overview

Zhejiang Dunan Artificial Environment Co., Ltd. has been granted 38 US utility patents between 2017 and 2025, placing Zhejiang Dunan Artificial Environment Co., Ltd. at #8,519 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 19 distinct Cooperative Patent Classification (CPC) subclasses, averaging 15.1 claims per patent with primary concentration in F16K (VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING). As a Foreign Corporation, Zhejiang Dunan Artificial Environment Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Zhejiang sits between Wm. T. Burnett IP, Llc (38 patents, rank #8,515) and ABT, Inc. (37 patents, rank #8,523) - the closest US assignees by grant volume. The composite Innovation Score of 57.1/100 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 23 grants, compared with 2 in the 2015–2019 window, a +1050% 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. Zhejiang Dunan Artificial Environment Co., Ltd.'s 15.1 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 19 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Who files at Zhejiang's volume?

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

patents

What this shows Zhejiang holds 38 patents at rank #8,519, 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 Zhejiang

By rank, the assignees closest to #8,519 in granted patent volume.

Leaders in F16K (Valves)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Zhejiang, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (57 here).

Blue-white Industries, Ltd. 57 Zhuhai Pantum Electronics Co., Ltd. 57 D-wave Systems Inc. 57 AIR Cruisers Company, Llc 57

Zhejiang's Innovation Score vs. every tracked assignee

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

57 Top 5% higher than 95% 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%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). Below this entry. 50–60: 5,058 US assignees (10%). This entry sits in this band. 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 201720182022202320242025 13
USPTO utility patent grants by year · 2017–2025

Grants by year

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

View data table
Zhejiang Dunan Artificial Environment Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2017 1 2.6%
2018 1 2.6%
2022 2 5.3%
2023 4 10.5%
2024 17 44.7%
2025partial year 13 34.2%

Which technologies does Zhejiang Dunan Artificial Environment Co., Ltd. patent most?

Top 15 of 19 technology areas

Where it ranks

Overall rank by patents

#8,519

of 50,000 tracked assignees

Innovation Score

57.1 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.