Where does China Tiesiju Civil Engineering Group Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), China Tiesiju Civil Engineering Group Co., Ltd. ranks #45,646 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does China Tiesiju Civil Engineering Group Co., Ltd. hold?

China Tiesiju Civil Engineering Group Co., Ltd. holds 5 US utility patents granted between 2023 and 2025, spanning 9 technology areas.

What is China Tiesiju Civil Engineering Group Co., Ltd.'s Innovation Score?

China Tiesiju Civil Engineering Group Co., Ltd. has an Innovation Score of 41.8 out of 100 (top 32% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is China Tiesiju Civil Engineering Group Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for China Tiesiju Civil Engineering Group Co., Ltd..

What does claim depth mean for China Tiesiju Civil Engineering Group Co., Ltd.'s patents?

China Tiesiju Civil Engineering Group Co., Ltd.'s patents average 8.4 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

China Tiesiju Civil Engineering Group Co., Ltd.

Q: What technology areas does China Tiesiju Civil Engineering Group Co., Ltd. focus on?

China Tiesiju Civil Engineering Group Co., Ltd.'s top technology area is E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels) with 1 patents, ranking #38 of 76 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Q: How is the China Tiesiju Civil Engineering Group 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 - 5 granted patents across 9 technology areas, recorded in grant years 2023–2025. 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: E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, China ranks #45,646 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 9 technology areas.

#45,646
of 49,997 US assignees by volume: Top 32%
by Innovation Score (41.8/100): 8.4
avg claims per patent

USPTO PatentsView assignee plate

Corpus R45646 · Foreign Corporation #45,646 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 5 grants
BOTTOM-DECILE #45,646/49,997
PHOTO-FINISH Children's Hospital…
CPC-NARROW E21F · 9 areas
INNOV-PAR 41.8/100
CLAIMS-PAR 8.4 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2023–2025 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Children's Hospital OF Eastern Ontario Research Institute Inc. (±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 China’s 41.8 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 6.2 pts (15%) Velocity 20.0 pts (48%) Breadth 10.6 pts (25%) Claim depth 5.0 pts (12%)

Qualcomm Incorporated · highest

85
China Tiesiju Civil… · this assignee

42
3D Lighting… · lowest

7

What this shows China's Innovation Score is 41.8/100 (top 32% 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 China?

Each dot is one of China’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). China’s own 8.4 claims/patent is at or below the 10.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where China's grants concentrate

China Tiesiju Civil Engineering Group Co., Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 20% of grants classified under E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels). By volume, China sits between Children's Hospital OF Eastern Ontario Research Institute Inc. and Chlorine Engineers Corp., Ltd..

China's three-year grant acceleration

China Tiesiju Civil Engineering Group Co., Ltd. shows 4 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.

Children's Hospit…

5
China Constructio…

5
China Shenhua Ene…

5
China Steel

5
China Tobacco Gua…

5
China-germany(Zhu…

5
Chint LOW Voltage…

5
Chlorine Engineers

5
China Tiesiju Civ… ◀

5

What this shows China holds 5 patents at rank #45,532, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near China

By rank, the assignees closest to #45,532 in granted patent volume.

Leaders in E21F (Safety Devices)

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

China's Innovation Score vs. every tracked assignee

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

42 Top 32% higher than 68% 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 · 2023–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2023–2019 baseline. Full figures in the table below.

View data table

China Tiesiju Civil Engineering Group Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	2	40.0%
2024	2	40.0%
2025partial year	1	20.0%

Which technologies does China Tiesiju Civil Engineering Group Co., Ltd. patent most?

E21F - Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels 1

E21D - SHAFTS; TUNNELS; GALLERIES; Large Underground Chambers 1

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 1

Y02A - Technologies FOR Adaptation TO Climate Change 1

B33Y - Additive Manufacturing, i.e. Manufacturing OF Three-dimensional [3-D] Objects BY Additive Deposition, Additive Agglomeration OR Additive Layering, e.g. BY 3-D Printing, Stereolithography OR Selective Laser Sintering 1

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 1

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 1

E01D - Construction OF Bridges, ; Elevated ROADWAYS; OR VIADUCTS; Assembly OF Bridges 1

Top 9 of 9 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

China Tiesiju Civil Engineering Group Co., Ltd.'s patent record in context - here's where to go next.

China Tiesiju Civil Engineering Group Co., Ltd.'s lead technology class is E21F (Safety Devices, Transport, Filling-up, Rescue, Ventilation, OR Draining IN OR OF Mines OR Tunnels), 20% of its portfolio - see every assignee active in that class. Explore E21F
Ranked #45,646 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare China Tiesiju Civil Engineering Group Co., Ltd. against Children's Hospital OF Eastern Ontario Research Institute Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.8/100 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.