Where does Zhejiang Research Institute OF Chemical Industry Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zhejiang Research Institute OF Chemical Industry Co., Ltd. ranks #44,237 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

Is Zhejiang Research Institute OF Chemical Industry Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Zhejiang Research Institute OF Chemical Industry Co., Ltd..

What does claim depth mean for Zhejiang Research Institute OF Chemical Industry Co., Ltd.'s patents?

Zhejiang Research Institute OF Chemical Industry Co., Ltd.'s patents average 12.8 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Zhejiang Research Institute OF Chemical Industry Co., Ltd.

Q: How many patents does Zhejiang Research Institute OF Chemical Industry Co., Ltd. hold?

Zhejiang Research Institute OF Chemical Industry Co., Ltd. holds 6 US utility patents granted between 2021 and 2025, spanning 7 technology areas.

Q: What is Zhejiang Research Institute OF Chemical Industry Co., Ltd.'s Innovation Score?

Zhejiang Research Institute OF Chemical Industry Co., Ltd. has an Innovation Score of 28.2 out of 100 (26th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Q: How is the Zhejiang Research Institute OF Chemical Industry Co., Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO PatentsView assignee record - 6 granted patents across 7 technology areas, recorded in grant years 2021–2025. 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: C07D (Heterocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Zhejiang ranks #44,237 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 7 technology areas.

#44,237
of 49,997 US assignees by volume: 26th percentile
by Innovation Score (28.2/100): 12.8
avg claims per patent

USPTO PatentsView assignee plate

Corpus R44237 · Foreign Corporation #44,237 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #44,237/49,997
PHOTO-FINISH Zhejiang Kanglaite…
CPC-NARROW C07D · 7 areas
INNOV-THIN 28.2/100
CLAIMS-RICH 12.8 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2025 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Zhejiang Kanglaite Group 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 Zhejiang’s 28.2 Innovation Score adds up

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

Volume 6.7 pts (24%) Velocity 4.4 pts (16%) Breadth 9.4 pts (33%) Claim depth 7.7 pts (27%)

Qualcomm Incorporated · highest

85
Zhejiang Research… · this assignee

28
3D Lighting… · lowest

7

What this shows Zhejiang's Innovation Score is 28.2/100 (26th 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.

Does more volume mean deeper claims for Zhejiang?

Each dot is one of Zhejiang’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). Zhejiang’s own 12.8 claims/patent is ABOVE the 9.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Zhejiang vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Zhejiang's grants concentrate

Zhejiang Research Institute OF Chemical Industry Co., Ltd. is a focused PatentsView assignee: 7 CPC subclasses with 66.7% of grants classified under C07D (Heterocyclic Compounds). Peak complete grant year is 2021 (3 grants) versus a trough of 1 in 2022. By volume, Zhejiang sits between Zhejiang Kanglaite Group Co., Ltd. and Zhongshan Xiaolan Town Yaoshuoli Lighting Factory.

Zhejiang's three-year grant acceleration

Zhejiang Research Institute OF Chemical Industry Co., Ltd. shows 2 grants in 2022–2024 against only 3 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.

Zhejiang Kanglait…

6
Zhejiang Linya

6
Zhejiang NHU Spec…

6
Zhejiang Raytheon…

6
Zhejiang Sanou Ma…

6
Zhejiang Xinsheng…

6
Zhongshan Hospita…

6
Zhongshan Xiaolan…

6
Zhejiang Research… ◀

6

What this shows Zhejiang holds 6 patents at rank #44,187, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Zhejiang

By rank, the assignees closest to #44,187 in granted patent volume.

Leaders in C07D (Heterocyclic Compounds)

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

Zhejiang's Innovation Score vs. every tracked assignee

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

28 26th percentile higher than 26% of 49,997 US assignees

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

USPTO utility patent grants by year · 2021–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Zhejiang Research Institute OF Chemical Industry Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	3	50.0%
2022	1	16.7%
2024	1	16.7%
2025partial year	1	16.7%

Which technologies does Zhejiang Research Institute OF Chemical Industry Co., Ltd. patent most?

C07D - Heterocyclic Compounds 4

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

C07C - Acyclic OR Carbocyclic Compounds 1

A01N - Preservation OF Bodies OF Humans OR Animals OR Plants OR Parts Thereof ; Biocides, e.g. AS Disinfectants, AS Pesticides OR AS Herbicides ; Pest Repellants OR ATTRACTANTS; Plant Growth Regulators 1

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 1

A62D - Chemical Means FOR Extinguishing Fires OR FOR Combating OR Protecting Against Harmful Chemical AGENTS; Chemical Materials FOR USE IN Breathing Apparatus 1

Top 7 of 7 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

Zhejiang Research Institute OF Chemical Industry Co., Ltd.'s patent record in context - here's where to go next.

Zhejiang Research Institute OF Chemical Industry Co., Ltd.'s lead technology class is C07D (Heterocyclic Compounds), 66.7% of its portfolio - see every assignee active in that class. Explore C07D
Ranked #44,237 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhejiang Research Institute OF Chemical Industry Co., Ltd. against Zhejiang Kanglaite Group Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 28.2/100 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

Compiled by PlainPatent , US Patent Intelligence Editorial Process · May 15, 2026

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.