PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.

USPTO PatentsView assignee record - 11 granted patents across 8 technology areas, active 2022–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B01J (CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS).

Explore the portfolio See the ranking
11
Total patents granted
8
CPC technology areas
7.9
Avg claims per patent
-
5-year filing velocity

The verdict

Nanjing holds 11 US patents across 8 technology areas, rank #24,829 of 50,000 tracked assignees.

#24,829
of 50,000 US assignees by volume
Top 28%
by Innovation Score (43.3/100)
7.9
avg claims per patent

Portfolio overview

Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. has been granted 11 US utility patents between 2022 and 2025, placing Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. at rank #24,829 across all assignees tracked by PlainPatent. This portfolio spans 8 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.9 claims per patent with primary concentration in B01J (CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS). As a Foreign Corporation, Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Nanjing sits between N.s. International, Ltd. (11 patents, rank #24,825) and National Guard Products, Inc. (11 patents, rank #24,833) - the closest US assignees by grant volume. The composite Innovation Score of 43.3/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Historical data spans 2022 through 2025, with 11 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s 7.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 8 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. against peers pursuing similar technology classes.

Who files at Nanjing's volume?

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

patents

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.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Nanjing's Innovation Score vs. every tracked assignee

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

43 Top 28% higher than 72% 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%). This entry sits in this band. 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

1234567 202220232025 2
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%
2025 2 18.2%

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

Top 8 of 8 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Focused
Claim Depth Simple

Where it ranks

Overall rank by patents

#24,829

Across all tracked assignees

Innovation Score

43.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. hold?
Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. holds 11 US granted patents filed between 2022 and 2025, spanning 8 technology areas.
What is Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s Innovation Score?
Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. has an Innovation Score of 43.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. focus on?
Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s top technology area is B01J (CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS) with 7 patents. The company has filed patents in 8 CPC subclasses total.
Is Nanjing Yanchang Reaction Technology Research Institute Co., Ltd.'s patent filing 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 relatively simple claim structure, typical for focused inventions.
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.

How to use this portfolio

Nanjing's 11 grants land it in the top 28% by Innovation Score, but volume alone doesn't tell you where the strength sits.

  • Read that count against the largest US assignees before treating it as dominance - Nanjing ranks #24,829 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in B01J - see who else leads that technology area. B01J leaders
  • Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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.