Where does Duke Manufacturing Co. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Duke Manufacturing Co. ranks #8,371 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 Duke Manufacturing Co. hold?

Duke Manufacturing Co. holds 38 US utility patents granted between 2015 and 2025, spanning 25 technology areas.

What is Duke Manufacturing Co.'s Innovation Score?

Duke Manufacturing Co. has an Innovation Score of 61.7 out of 100 (top 3% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Duke Manufacturing Co. focus on?

Duke Manufacturing Co.'s top technology area is A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages) with 13 patents, ranking #80 of 793 assignees active in that subclass. Grants appear in 25 CPC subclasses total.

Is Duke Manufacturing Co.'s patent grant rate increasing or decreasing?

Duke Manufacturing Co.'s recent grant velocity is +0% 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 Duke Manufacturing Co.'s patents?

Duke Manufacturing Co.'s patents average 24.6 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 Duke Manufacturing Co. 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 US Corporation

Duke Manufacturing Co.

USPTO PatentsView assignee record - 38 granted patents across 25 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: A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Duke ranks #8,371 of 49,997 tracked US assignees by granted-patent volume, with 38 patents across 25 technology areas.

#8,371
of 49,997 US assignees by volume: Top 3%
by Innovation Score (61.7/100): 24.6
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8371 · US Corporation #8,371 · 38 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-STRONG · CLAIMS-DENSE · TYPE-USCORP · VEL-FLAT · BOOK-FULL

GRANTS-SMALL 38 grants
UPPER-Q #8,371/49,997
PHOTO-FINISH Defond Componets
CPC-FOCUS A47J · 25 areas
INNOV-STRONG 61.7/100
CLAIMS-DENSE 24.6 claims/avg
TYPE-USCORP US Corporation
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Defond Componets 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 Duke’s 61.7 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 12.7 pts (21%) Velocity 16.7 pts (27%) Breadth 17.7 pts (29%) Claim depth 14.7 pts (24%)

Qualcomm Incorporated · highest

85
James R Glidewell… · near

62
Oregon Health &… · near

62
Duke Manufacturing · this assignee

62
Asahi Kasei… · near

62
Wuhan China Star… · near

62
3D Lighting… · lowest

7

What this shows Duke's Innovation Score is 61.7/100 (top 3% 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 Duke?

Each dot is one of Duke’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). Duke’s own 24.6 claims/patent is ABOVE the 13.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Duke's grants concentrate

Duke Manufacturing Co. is a focused PatentsView assignee: 25 CPC subclasses with 34.2% of grants classified under A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages). Peak complete grant year is 2023 (5 grants) versus a trough of 1 in 2022. By volume, Duke sits between Defond Componets Limited and Element Six (UK) Limited.

Duke's three-year grant acceleration

Duke Manufacturing Co. shows 10 grants in 2022–2024 against only 4 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.

Defond Componets

38
Designetics

38
Dewertokin

38
Diehl Metering Sy…

38
Dunan Microstaq

38
EBI

38
Endra Life Scienc…

38
Element Six (UK)

38
Duke Manufacturing ◀

38

What this shows Duke holds 38 patents at rank #8,371, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Duke

By rank, the assignees closest to #8,371 in granted patent volume.

Leaders in A47J (Kitchen Equipment)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Duke, neither rank-band nor same-CPC leaders (those blocks stay above). In A47J (Kitchen Equipment), Duke ranks #80 of 793 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (62 here).

Asahi Kasei Microdevices Corporation 62 Wuhan China Star Optoelectronics Technology Co., Ltd. 62 James R. Glidewell Dental Ceramics, Inc. 62 Oregon Health & Science University 62

Duke's Innovation Score vs. every tracked assignee

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

62 Top 3% higher than 97% 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

Duke Manufacturing Co. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	10.5%
2016	3	7.9%
2017	4	10.5%
2018	3	7.9%
2020	2	5.3%
2021	2	5.3%
2022	1	2.6%
2023	5	13.2%
2024	4	10.5%
2025partial year	10	26.3%

Which technologies does Duke Manufacturing Co. patent most?

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 13

F24C - Domestic Stoves OR Ranges ; Details OF Domestic Stoves OR Ranges, OF General Application 10

G06F - Electric Digital Data Processing 9

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 8

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 8

A21B - Bakers' OVENS; Machines OR Equipment FOR Baking 8

G06Q - Information AND Communication Technology [ICT] Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory PURPOSES; Systems OR Methods Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory Purposes, NOT Otherwise Provided FOR 7

A21D - Treatment OF Flour OR Dough FOR Baking, e.g. BY Addition OF MATERIALS; BAKING; Bakery Products 6

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 4

G06T - Image Data Processing OR Generation, IN General 4

H04W - Wireless Communication Networks 3

G07F - Coin-freed OR Like Apparatus 2

A47G - Household OR Table Equipment 2

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 2

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 2

Top 15 of 25 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

Duke Manufacturing Co.'s patent record in context - here's where to go next.

Duke Manufacturing Co.'s lead technology class is A47J (Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages), 34.2% of its portfolio - see every assignee active in that class. Explore A47J
Ranked #8,371 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Duke Manufacturing Co. against Defond Componets Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 61.7/100 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.