Where does Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. ranks #27,905 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

Is Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd..

What does claim depth mean for Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd.'s patents?

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd.'s patents average 10.8 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

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd.

Q: How is the Zhengzhou Research Institute OF Mechanical Engineering 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 - 10 granted patents across 11 technology areas, recorded in grant years 2020–2025. 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: B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Zhengzhou ranks #27,905 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 11 technology areas.

#27,905
of 49,997 US assignees by volume: Top 43%
by Innovation Score (37.6/100): 10.8
avg claims per patent

USPTO PatentsView assignee plate

Corpus R27905 · Foreign Corporation #27,905 · 10 grants

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

GRANTS-MICRO 10 grants
MID-PACK #27,905/49,997
PHOTO-FINISH Zgtl
CPC-FOCUS B23K · 11 areas
INNOV-THIN 37.6/100
CLAIMS-PAR 10.8 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2025 · 6y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Zgtl 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.

How Zhengzhou’s 37.6 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 8.3 pts (22%) Velocity 11.1 pts (30%) Breadth 11.7 pts (31%) Claim depth 6.5 pts (17%)

Qualcomm Incorporated · highest

85
Zhengzhou Research… · this assignee

38
3D Lighting… · lowest

7

What this shows Zhengzhou's Innovation Score is 37.6/100 (top 43% 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 Zhengzhou?

Each dot is one of Zhengzhou’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). Zhengzhou’s own 10.8 claims/patent is at or below the 11.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Zhengzhou's grants concentrate

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 80% of grants classified under B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam). Peak complete grant year is 2024 (4 grants) versus a trough of 1 in 2021. By volume, Zhengzhou sits between Zgtl LLC and Zilltek Technology (SHANGHAI) Corp..

Zhengzhou's three-year grant acceleration

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. shows 5 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.

Zgtl

10
Zhejiang Aerlang…

10
Zhejiang Dingli M…

10
Zhejiang Jiuzhou…

10
Zhongying Changji…

10
ZHU HAI Fuyun Lig…

10
Zhuhai Juntian Te…

10
Zilltek Technolog…

10
Zhengzhou Researc… ◀

10

What this shows Zhengzhou holds 10 patents at rank #27,881, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Zhengzhou

By rank, the assignees closest to #27,881 in granted patent volume.

Leaders in B23K (Soldering OR Unsoldering)

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

Zhengzhou's Innovation Score vs. every tracked assignee

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

38 Top 43% higher than 57% 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 · 2020–2025

Grants by year

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

View data table

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	2	20.0%
2021	1	10.0%
2023	1	10.0%
2024	4	40.0%
2025partial year	2	20.0%

Which technologies does Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. patent most?

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 8

C22C - Alloys 5

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

B21C - Manufacture OF Metal Sheets, Wire, Rods, Tubes, Profiles OR Like Semi-manufactured Products Otherwise Than BY ROLLING; Auxiliary Operations Used IN Connection With Metal-working Without Essentially Removing Material 1

B62D - Motor VEHICLES; Trailers 1

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 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

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 1

Y10T - Technical Subjects Covered BY Former US Classification 1

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 1

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 1

Top 11 of 11 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

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd.'s patent record in context - here's where to go next.

Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd.'s lead technology class is B23K (Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam), 80% of its portfolio - see every assignee active in that class. Explore B23K
Ranked #27,905 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Zhengzhou Research Institute OF Mechanical Engineering Co., Ltd. against Zgtl LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 37.6/100 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.