Where does Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. ranks #24,843 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

Is Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Nanjing Yanchang Reaction Technology Research Institute Co., Ltd..

What does claim depth mean for Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s patents?

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s patents average 7.9 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

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.

Q: How is the Nanjing Yanchang Reaction Technology Research Institute 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 - 11 granted patents across 8 technology areas, recorded in grant years 2022–2025. 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: B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nanjing ranks #24,843 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 8 technology areas.

#24,843
of 49,997 US assignees by volume: Top 28%
by Innovation Score (43.3/100): 7.9
avg claims per patent

USPTO PatentsView assignee plate

Corpus R24843 · Foreign Corporation #24,843 · 11 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 11 grants
MID-PACK #24,843/49,997
PHOTO-FINISH Nabors LUX 2 Sarl
CPC-NARROW B01J · 8 areas
INNOV-PAR 43.3/100
CLAIMS-SPARSE 7.9 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2025 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Nabors LUX 2 Sarl (±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 Nanjing’s 43.3 Innovation Score adds up

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

Volume 8.6 pts (20%) Velocity 20.0 pts (46%) Breadth 10.0 pts (23%) Claim depth 4.7 pts (11%)

Qualcomm Incorporated · highest

85
Nanjing Yanchang… · this assignee

43
3D Lighting… · lowest

7

What this shows Nanjing's Innovation Score is 43.3/100 (top 28% 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 Nanjing?

Each dot is one of Nanjing’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). Nanjing’s own 7.9 claims/patent is at or below the 11.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Nanjing's grants concentrate

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. is a focused PatentsView assignee: 8 CPC subclasses with 63.6% of grants classified under B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus). Peak complete grant year is 2022 (6 grants) versus a trough of 3 in 2023. By volume, Nanjing sits between N.S. International, Ltd. and National Guard Products, Inc..

Nanjing's three-year grant acceleration

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. shows 9 grants in 2022–2024 against only 0 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.

N S International

11
Nabors LUX 2 Sarl

11
Namecheap

11
Nanhua Intelligen…

11
Nanograf

11
National Center F…

11
National Dong HWA…

11
National Guard Pr…

11
Nanjing Yanchang… ◀

11

What this shows Nanjing holds 11 patents at rank #24,829, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nanjing

By rank, the assignees closest to #24,829 in granted patent volume.

Leaders in B01J (Chemical OR Physical Processes)

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

Nanjing's Innovation Score vs. every tracked assignee

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

43 Top 28% higher than 72% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	6	54.5%
2023	3	27.3%
2025partial year	2	18.2%

Which technologies does Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. patent most?

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 7

C07C - Acyclic OR Carbocyclic Compounds 5

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 3

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 2

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 2

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

B01D - Separation 1

Top 8 of 8 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

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s patent record in context - here's where to go next.

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s lead technology class is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus), 63.6% of its portfolio - see every assignee active in that class. Explore B01J
Ranked #24,843 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. against N.S. International, Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.3/100 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

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.