Where does Changxin Memory Technologies, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Changxin Memory Technologies, Inc. ranks #269 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 Changxin Memory Technologies, Inc. hold?

Changxin Memory Technologies, Inc. holds 1,589 US utility patents granted between 2021 and 2025, spanning 110 technology areas.

What is Changxin Memory Technologies, Inc.'s Innovation Score?

Changxin Memory Technologies, Inc. has an Innovation Score of 79.5 out of 100 (top 1% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Changxin Memory Technologies, Inc.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Changxin Memory Technologies, Inc..

What does claim depth mean for Changxin Memory Technologies, Inc.'s patents?

Changxin Memory Technologies, Inc.'s patents average 15.1 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.

How is the Changxin Memory Technologies, Inc. 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 2015–2025 USPTO PatentsView Foreign Corporation

Changxin Memory Technologies, Inc.

Q: What technology areas does Changxin Memory Technologies, Inc. focus on?

Changxin Memory Technologies, Inc.'s top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 607 patents. Grants appear in 110 CPC subclasses total.

USPTO PatentsView assignee record - 1,589 granted patents across 110 technology areas, recorded in grant years 2021–2025. 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: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Changxin ranks #269 of 49,997 tracked US assignees by granted-patent volume, with 1,589 patents across 110 technology areas.

#269
of 49,997 US assignees by volume: Top 1%
by Innovation Score (79.5/100): 15.1
avg claims per patent

USPTO PatentsView assignee plate

Corpus R269 · Foreign Corporation #269 · 1,589 grants

GRANTS-LARGE · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-LARGE 1.6K grants
TOP-DECILE #269/49,997
PHOTO-FINISH Here Global B V
CPC-WIDE H01L · 110 areas
INNOV-STRONG 79.5/100
CLAIMS-RICH 15.1 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2025 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Here Global B.V. (±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.

Qualcomm Incorporated · highest

85
Vivo Mobile… · near

80
Changxin Memory · this assignee

79
LG Energy Solution · near

79
Johnson Controls… · near

79
Apple · near

79
3D Lighting… · lowest

7

What this shows Changxin's Innovation Score is 79.5/100 (top 1% 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.

How Changxin's grant cadence moved

Grant history spans 2021–2025. Across complete PatentsView years, output peaked in 2024 at 736 grants and bottomed in 2021 at 17. Lead class H01L accounts for 38.2% of the portfolio across 110 subclasses. Volume neighbours: Ecolab USA Inc. (#265) and Meta Platforms Technologies, LLC (#273).

Changxin's three-year grant acceleration

Changxin Memory Technologies, Inc. shows 1,066 grants in 2022–2024 against only 17 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.

Ecolab USA

1,610
Nitto Denko

1,608
Kohler

1,594
Henkel & Kgaa

1,592
Here Global B V

1,589
Changxin Memory ◀

1,589
Sprint Communicat…

1,574
Wuhan China Star…

1,572
Meta Platforms

1,569

What this shows Changxin holds 1,589 patents at rank #269, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Changxin

By rank, the assignees closest to #269 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Changxin, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (79 here).

LG Energy Solution, Ltd. 79 Johnson Controls Tyco IP Holdings LLP 79 Vivo Mobile Communication Co., Ltd. 80 Apple Inc. 79

Similar claim depth

Nearest assignees by average claims per patent (15.1 here).

Masimo Corporation 15.1 avg Hongfujin Precision Industry (WUHAN) Co., Ltd. 15.1 avg Exfo Inc. 15.1 avg Rolls-royce plc 15.1 avg

Changxin's Innovation Score vs. every tracked assignee

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

79 Top 1% higher than 99% 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 · 2021–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Changxin Memory Technologies, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	17	1.1%
2022	86	5.4%
2023	244	15.4%
2024	736	46.3%
2025partial year	506	31.8%

Which technologies does Changxin Memory Technologies, Inc. patent most?

H01L - Semiconductor Devices NOT Covered BY Class H10 607

H10B - Electronic Memory Devices 565

G11C - Static Stores 519

H10D - Inorganic Electric Semiconductor Devices 347

G06F - Electric Digital Data Processing 169

H03K - Pulse Technique 126

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 96

Y02D - Climate Change Mitigation Technologies IN Information AND Communication Technologies [ICT], I.E. Information AND Communication Technologies Aiming AT THE Reduction OF Their OWN Energy USE 70

G03F - Photomechanical Production OF Textured OR Patterned Surfaces, e.g. FOR Printing, FOR Processing OF Semiconductor DEVICES; Materials THEREFOR; Originals THEREFOR; Apparatus Specially Adapted THEREFOR; 63

H10N - Electric Solid-state Devices NOT Otherwise Provided FOR 31

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 27

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 26

H02H - Emergency Protective Circuit Arrangements 23

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 19

H03L - Automatic Control, Starting, Synchronisation OR Stabilisation OF Generators OF Electronic Oscillations OR Pulses 16

Top 15 of 110 technology areas

Where it ranks

Overall rank by patents

#269

of 49,997 tracked assignees

Innovation Score

79.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Changxin Memory Technologies, Inc.'s patent record in context - here's where to go next.

Changxin Memory Technologies, Inc.'s lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 38.2% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #269 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Changxin Memory Technologies, Inc. against Ecolab USA Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 79.5/100 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.