Where does D&M Holdings Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), D&M Holdings Inc. ranks #6,519 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 D&M Holdings Inc. hold?

D&M Holdings Inc. holds 51 US utility patents granted between 2015 and 2025, spanning 31 technology areas.

What is D&M Holdings Inc.'s Innovation Score?

D&M Holdings Inc. has an Innovation Score of 49.6 out of 100 (top 14% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is D&M Holdings Inc.'s patent grant rate increasing or decreasing?

D&M Holdings Inc.'s recent grant velocity is +5% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for D&M Holdings Inc.'s patents?

D&M Holdings Inc.'s patents average 13.2 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.

How is the D&M Holdings 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

D&M Holdings Inc.

Q: What technology areas does D&M Holdings Inc. focus on?

D&M Holdings Inc.'s top technology area is H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems) with 26 patents, ranking #110 of 1,513 assignees active in that subclass. Grants appear in 31 CPC subclasses total.

USPTO PatentsView assignee record - 51 granted patents across 31 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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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, D&m ranks #6,519 of 49,997 tracked US assignees by granted-patent volume, with 51 patents across 31 technology areas.

#6,519
of 49,997 US assignees by volume: Top 14%
by Innovation Score (49.6/100): 13.2
avg claims per patent: +5%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R6519 · Foreign Corporation #6,519 · 51 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 51 grants
UPPER-Q #6,519/49,997
PHOTO-FINISH Castrol
CPC-FOCUS H04R · 31 areas
INNOV-PAR 49.6/100
CLAIMS-RICH 13.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +5% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Castrol Limited (±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 D&m’s 49.6 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 13.6 pts (27%) Velocity 8.3 pts (17%) Breadth 19.7 pts (40%) Claim depth 7.9 pts (16%)

Qualcomm Incorporated · highest

85
Shenzhen BYD Auto R&D · near

50
D&M Holdings · this assignee

50
Eckart · near

50
Haver & Boecker OHG · near

50
Nexa3D · near

50
3D Lighting… · lowest

7

What this shows D&m's Innovation Score is 49.6/100 (top 14% 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 D&m?

Each dot is one of D&m’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). D&m’s own 13.2 claims/patent is at or below the 17.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where D&m's grants concentrate

D&M Holdings Inc. is a focused PatentsView assignee: 31 CPC subclasses with 51% 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 2022 (7 grants) versus a trough of 3 in 2021. By volume, D&m sits between Castrol Limited and Digital Ally, Inc..

D&m's three-year grant acceleration

D&M Holdings Inc. shows 15 grants in 2022–2024 against only 12 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.

Castrol

51
Children's Hospit…

51
Corn Products Dev…

51
Cotapaxi Custom D…

51
D R Systems

51
Dana

51
Denali Therapeuti…

51
Digital Ally

51
D&M Holdings ◀

51

What this shows D&M holds 51 patents at rank #6,516, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near D&M

By rank, the assignees closest to #6,516 in granted patent volume.

Leaders in H04R (Loudspeakers)

Other assignees with the most granted patents in D&M's primary technology class.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for D&M, neither rank-band nor same-CPC leaders (those blocks stay above). In H04R (Loudspeakers), D&M ranks #110 of 1,513 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (50 here).

Eckart GmbH 50 Nexa3D Inc. 50 Haver & Boecker OHG 50 Shenzhen BYD Auto R&D Company Limited 50

Similar claim depth

Nearest assignees by average claims per patent (13.2 here).

Medizinische Hochschule Hannover 13.2 avg Seoul National University R&DB Foundation 13.2 avg Ansell Limited 13.2 avg Namics Corporation 13.2 avg

D&m's Innovation Score vs. every tracked assignee

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

50 Top 14% higher than 86% 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

D&M Holdings Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	7.8%
2016	5	9.8%
2017	5	9.8%
2018	4	7.8%
2019	4	7.8%
2020	5	9.8%
2021	3	5.9%
2022	7	13.7%
2023	3	5.9%
2024	5	9.8%
2025partial year	6	11.8%

Which technologies does D&M Holdings Inc. patent most?

H04R - Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems 26

G06F - Electric Digital Data Processing 19

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 11

H04S - Stereophonic Systems 9

G10L - Speech Analysis Techniques OR Speech SYNTHESIS; Speech RECOGNITION; Speech OR Voice Processing TECHNIQUES; Speech OR Audio Coding OR Decoding 7

H04W - Wireless Communication Networks 7

H04N - Pictorial Communication, e.g. Television 7

G11B - Information Storage Based ON Relative Movement Between Record Carrier AND Transducer 5

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 4

G01C - Measuring Distances, Levels OR BEARINGS; SURVEYING; NAVIGATION; Gyroscopic INSTRUMENTS; Photogrammetry OR Videogrammetry 2

A63B - Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment 2

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 2

G09G - Arrangements OR Circuits FOR Control OF Indicating Devices Using Static Means TO Present Variable Information 2

H04M - Telephonic Communication 2

H03F - Amplifiers 1

Top 15 of 31 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

D&M Holdings Inc.'s patent record in context - here's where to go next.

D&M Holdings Inc.'s lead technology class is H04R (Loudspeakers, Microphones, Gramophone Pick-ups OR Like Acoustic Electromechanical TRANSDUCERS; Deaf-aid SETS; Public Address Systems), 51% of its portfolio - see every assignee active in that class. Explore H04R
Ranked #6,519 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare D&M Holdings Inc. against Castrol Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 49.6/100 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.