Where does Safekey Engineering Technology (Zhengzhou), Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Safekey Engineering Technology (Zhengzhou), Ltd. ranks #17,144 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 Safekey Engineering Technology (Zhengzhou), Ltd. hold?

Safekey Engineering Technology (Zhengzhou), Ltd. holds 17 US utility patents granted between 2015 and 2025, spanning 22 technology areas.

What is Safekey Engineering Technology (Zhengzhou), Ltd.'s Innovation Score?

Safekey Engineering Technology (Zhengzhou), Ltd. has an Innovation Score of 44.2 out of 100 (top 26% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Safekey Engineering Technology (Zhengzhou), Ltd.'s patent grant rate increasing or decreasing?

Safekey Engineering Technology (Zhengzhou), Ltd.'s recent grant velocity is +50% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Safekey Engineering Technology (Zhengzhou), Ltd.'s patents?

Safekey Engineering Technology (Zhengzhou), Ltd.'s patents average 7.2 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

Safekey Engineering Technology (Zhengzhou), Ltd.

Q: What technology areas does Safekey Engineering Technology (Zhengzhou), Ltd. focus on?

Safekey Engineering Technology (Zhengzhou), Ltd.'s top technology area is E02D (FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures) with 6 patents, ranking #64 of 430 assignees active in that subclass. Grants appear in 22 CPC subclasses total.

Q: How is the Safekey Engineering Technology (Zhengzhou), 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 - 17 granted patents across 22 technology areas, recorded in grant years 2015–2025. 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: E02D (FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Safekey ranks #17,144 of 49,997 tracked US assignees by granted-patent volume, with 17 patents across 22 technology areas.

#17,144
of 49,997 US assignees by volume: Top 26%
by Innovation Score (44.2/100): 7.2
avg claims per patent: +50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R17144 · Foreign Corporation #17,144 · 17 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 17 grants
MID-PACK #17,144/49,997
PHOTO-FINISH Rox Medical
CPC-FOCUS E02D · 22 areas
INNOV-PAR 44.2/100
CLAIMS-SPARSE 7.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Rox Medical, 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 Safekey’s 44.2 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 10.0 pts (23%) Velocity 13.3 pts (30%) Breadth 16.6 pts (38%) Claim depth 4.3 pts (10%)

Qualcomm Incorporated · highest

85
Safekey Engineering… · this assignee

44
3D Lighting… · lowest

7

What this shows Safekey's Innovation Score is 44.2/100 (top 26% 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 Safekey?

Each dot is one of Safekey’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). Safekey’s own 7.2 claims/patent is at or below the 15.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Safekey's grants concentrate

Safekey Engineering Technology (Zhengzhou), Ltd. is a focused PatentsView assignee: 22 CPC subclasses with 35.3% of grants classified under E02D (FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures). Peak complete grant year is 2015 (4 grants) versus a trough of 1 in 2016. By volume, Safekey sits between Rox Medical, Inc. and Salt International Corp..

Safekey's three-year grant acceleration

Safekey Engineering Technology (Zhengzhou), Ltd. shows 6 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.

Rox Medical

17
Run Them Sweet

17
S M E Products

17
Sacmi Imola S C

17
Saft America

17
Sagami Chemical R…

17
Saint-gobain Adfo…

17
Salt International

17
Safekey Engineeri… ◀

17

What this shows Safekey holds 17 patents at rank #17,143, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Safekey

By rank, the assignees closest to #17,143 in granted patent volume.

Leaders in E02D (Foundations)

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

Safekey's Innovation Score vs. every tracked assignee

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

44 Top 26% higher than 74% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Safekey Engineering Technology (Zhengzhou), Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	23.5%
2016	1	5.9%
2017	1	5.9%
2021	3	17.6%
2022	1	5.9%
2023	2	11.8%
2024	3	17.6%
2025partial year	2	11.8%

Which technologies does Safekey Engineering Technology (Zhengzhou), Ltd. patent most?

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 6

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 5

E03F - SEWERS; Cesspools 3

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 3

E02B - Hydraulic Engineering 3

E01B - Permanent WAY; Permanent-way TOOLS; Machines FOR Making Railways OF ALL Kinds 2

B09B - Disposal OF Solid Waste NOT Otherwise Provided FOR 1

B66C - CRANES; Load-engaging Elements OR Devices FOR Cranes, Capstans, Winches, OR Tackles 1

B66F - Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load 1

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 1

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 1

G06V - Image OR Video Recognition OR Understanding 1

G06N - Computing Arrangements Based ON Specific Computational Models 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

B64U - Unmanned Aerial Vehicles [UAV]; Equipment Therefor 1

Top 15 of 22 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

Safekey Engineering Technology (Zhengzhou), Ltd.'s patent record in context - here's where to go next.

Safekey Engineering Technology (Zhengzhou), Ltd.'s lead technology class is E02D (FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures), 35.3% of its portfolio - see every assignee active in that class. Explore E02D
Ranked #17,144 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Safekey Engineering Technology (Zhengzhou), Ltd. against Rox Medical, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.2/100 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.