Where does AAC Microtech (Changzhou) Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), AAC Microtech (Changzhou) Co., Ltd. ranks #1,728 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 AAC Microtech (Changzhou) Co., Ltd. hold?

AAC Microtech (Changzhou) Co., Ltd. holds 236 US utility patents granted between 2015 and 2025, spanning 34 technology areas.

What is AAC Microtech (Changzhou) Co., Ltd.'s Innovation Score?

AAC Microtech (Changzhou) Co., Ltd. has an Innovation Score of 64.9 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 AAC Microtech (Changzhou) Co., Ltd.'s patent grant rate increasing or decreasing?

AAC Microtech (Changzhou) Co., Ltd.'s recent grant velocity is +741% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for AAC Microtech (Changzhou) Co., Ltd.'s patents?

AAC Microtech (Changzhou) Co., Ltd.'s patents average 9.0 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 AAC Microtech (Changzhou) 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 2015–2025 USPTO PatentsView Foreign Corporation

AAC Microtech (Changzhou) Co., Ltd.

Q: What technology areas does AAC Microtech (Changzhou) Co., Ltd. focus on?

AAC Microtech (Changzhou) Co., Ltd.'s top technology area is H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems) with 192 patents, ranking #25 of 1,513 assignees active in that subclass. Grants appear in 34 CPC subclasses total.

USPTO PatentsView assignee record - 236 granted patents across 34 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: H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, AAC ranks #1,728 of 49,997 tracked US assignees by granted-patent volume, with 236 patents across 34 technology areas.

#1,728
of 49,997 US assignees by volume: Top 1%
by Innovation Score (64.9/100): 9.0
avg claims per patent: +741%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1728 · Foreign Corporation #1,728 · 236 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-STRONG · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 236 grants
TOP-DECILE #1,728/49,997
PHOTO-FINISH Alps Electric
CPC-FOCUS H04R · 34 areas
INNOV-STRONG 64.9/100
CLAIMS-PAR 9.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +741% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Alps Electric Co., Ltd. (±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 AAC’s 64.9 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 18.9 pts (29%) Velocity 20.0 pts (31%) Breadth 20.6 pts (32%) Claim depth 5.4 pts (8%)

Qualcomm Incorporated · highest

85
AAC Microtech… · this assignee

65
Dolby Laboratories… · near

65
Mako Surgical · near

65
Regents of the… · near

65
STMicroelectronics… · near

65
3D Lighting… · lowest

7

What this shows AAC's Innovation Score is 64.9/100 (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.

Does more volume mean deeper claims for AAC?

Each dot is one of AAC’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). AAC’s own 9.0 claims/patent is at or below the 13.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where AAC's grants concentrate

AAC Microtech (Changzhou) Co., Ltd. is a focused PatentsView assignee: 34 CPC subclasses with 81.4% of grants classified under H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems). Peak complete grant year is 2024 (76 grants) versus a trough of 1 in 2017. By volume, AAC sits between Sicpa Holding SA and Meidensha Corporation.

AAC's three-year grant acceleration

AAC Microtech (Changzhou) Co., Ltd. shows 141 grants in 2022–2024 against only 6 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.

Sicpa Holding

237
Sartorius Stedim…

237
Tsubakimoto Chain

237
University of Lou…

237
Alps Electric

236
Beijing Zhigu RUI…

236
Johnson & Johnson…

236
Meidensha

236
AAC Microtech (Ch… ◀

236

What this shows AAC holds 236 patents at rank #1,728, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near AAC

By rank, the assignees closest to #1,728 in granted patent volume.

Leaders in H04R (Loudspeakers)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for AAC, neither rank-band nor same-CPC leaders (those blocks stay above). In H04R (Loudspeakers), AAC ranks #25 of 1,513 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (65 here).

STMicroelectronics (Research & Development) Limited 65 Mako Surgical Corp. 65 Regents of the University of Minnesota 65 Dolby Laboratories Licensing Corporation 65

Similar claim depth

Nearest assignees by average claims per patent (9.0 here).

Sumitomo Electric Industries, Ltd. 9.0 avg China Agricultural University 9.0 avg Zymogenetics Inc. 9.0 avg King Saud University 9.0 avg

AAC's Innovation Score vs. every tracked assignee

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

65 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 · 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

AAC Microtech (Changzhou) Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	6	2.5%
2016	5	2.1%
2017	1	0.4%
2018	1	0.4%
2019	4	1.7%
2021	2	0.8%
2022	5	2.1%
2023	60	25.4%
2024	76	32.2%
2025partial year	76	32.2%

Which technologies does AAC Microtech (Changzhou) Co., Ltd. patent most?

H04R - Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems 192

H02K - Dynamo-electric Machines 25

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 8

H10K - Organic Electric Solid-state Devices 6

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 5

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 5

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 5

G06F - Electric Digital Data Processing 5

B06B - Methods OR Apparatus FOR Generating OR Transmitting Mechanical Vibrations OF Infrasonic, Sonic, OR Ultrasonic Frequency, ; e.g.; FOR Performing Mechanical Work IN General 4

G05G - Control Devices OR Systems Insofar AS Characterised BY Mechanical Features Only 4

H04S - Stereophonic Systems 4

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 4

G10K - Sound-producing DEVICES; Methods OR Devices FOR Protecting Against, OR FOR Damping, Noise OR Other Acoustic Waves IN GENERAL; Acoustics NOT Otherwise Provided FOR 3

C07D - Heterocyclic Compounds 3

F16M - Frames, Casings OR Beds OF Engines, Machines OR Apparatus, NOT Specific TO Engines, Machines OR Apparatus Provided FOR ELSEWHERE; STANDS; Supports 2

Top 15 of 34 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

AAC Microtech (Changzhou) Co., Ltd.'s patent record in context - here's where to go next.

AAC Microtech (Changzhou) Co., Ltd.'s lead technology class is H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems), 81.4% of its portfolio - see every assignee active in that class. Explore H04R
Ranked #1,728 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare AAC Microtech (Changzhou) Co., Ltd. against Sicpa Holding SA, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 64.9/100 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.