Where does KEN Dall Enterprise Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), KEN Dall Enterprise Co., Ltd. ranks #26,664 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 KEN Dall Enterprise Co., Ltd. hold?

KEN Dall Enterprise Co., Ltd. holds 10 US utility patents granted between 2015 and 2025, spanning 3 technology areas.

What is KEN Dall Enterprise Co., Ltd.'s Innovation Score?

KEN Dall Enterprise Co., Ltd. has an Innovation Score of 30.9 out of 100 (36th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is KEN Dall Enterprise Co., Ltd.'s patent grant rate increasing or decreasing?

KEN Dall Enterprise Co., Ltd.'s recent grant velocity is -50% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for KEN Dall Enterprise Co., Ltd.'s patents?

KEN Dall Enterprise Co., Ltd.'s patents average 5.2 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 KEN Dall Enterprise 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

KEN Dall Enterprise Co., Ltd.

Q: What technology areas does KEN Dall Enterprise Co., Ltd. focus on?

KEN Dall Enterprise Co., Ltd.'s top technology area is A61F (Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive DEVICES; FOMENTATION; Treatment OR Protection OF Eyes OR EARS; Bandages, Dressings OR Absorbent PADS; Firs) with 9 patents, ranking #711 of 3,082 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

USPTO PatentsView assignee record - 10 granted patents across 3 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: A61F (Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive Device).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, KEN ranks #26,664 of 49,997 tracked US assignees by granted-patent volume, with 10 patents across 3 technology areas.

#26,664
of 49,997 US assignees by volume: 36th percentile
by Innovation Score (30.9/100): 5.2
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R26664 · Foreign Corporation #26,664 · 10 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 10 grants
MID-PACK #26,664/49,997
PHOTO-FINISH Karius
CPC-NARROW A61F · 3 areas
INNOV-THIN 30.9/100
CLAIMS-SPARSE 5.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Karius, 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 KEN’s 30.9 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 8.3 pts (27%) Velocity 13.3 pts (43%) Breadth 6.1 pts (20%) Claim depth 3.1 pts (10%)

Qualcomm Incorporated · highest

85
KEN Dall Enterprise · this assignee

31
3D Lighting… · lowest

7

What this shows KEN's Innovation Score is 30.9/100 (36th percentile 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 KEN?

Each dot is one of KEN’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). KEN’s own 5.2 claims/patent is at or below the 14.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where KEN's grants concentrate

KEN Dall Enterprise Co., Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 90% of grants classified under A61F (Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive Device). Peak complete grant year is 2015 (2 grants) versus a trough of 1 in 2021. By volume, KEN sits between Karius, Inc. and Kettler International, Inc..

KEN's three-year grant acceleration

KEN Dall Enterprise Co., Ltd. shows 2 grants in 2022–2024 against only 1 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.

Karius

10
Kastanienbaum

10
Kede Numerical Co…

10
Kel-tec CNC Indus…

10
Kerlink

10
Kern

10
Kettering Univers…

10
Kettler Internati…

10
KEN Dall Enterpri… ◀

10

What this shows KEN holds 10 patents at rank #26,653, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near KEN

By rank, the assignees closest to #26,653 in granted patent volume.

Leaders in A61F (Filters Implantable Into Blood Vessels)

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

KEN's Innovation Score vs. every tracked assignee

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

31 36th percentile higher than 36% 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

KEN Dall Enterprise Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	20.0%
2017	2	20.0%
2018	2	20.0%
2021	1	10.0%
2022	2	20.0%
2025partial year	1	10.0%

Which technologies does KEN Dall Enterprise Co., Ltd. patent most?

A61F - Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive DEVICES; FOMENTATION; Treatment OR Protection OF Eyes OR EARS; Bandages, Dressings OR Absorbent PADS; Firs 9

F16F - SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration 1

F16H - Gearing 1

Top 3 of 3 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

KEN Dall Enterprise Co., Ltd.'s patent record in context - here's where to go next.

KEN Dall Enterprise Co., Ltd.'s lead technology class is A61F (Filters Implantable Into Blood VESSELS; PROSTHESES; Devices Providing Patency TO, OR Preventing Collapsing OF, Tubular Structures OF THE Body, e.g. STENTS; Orthopaedic, Nursing OR Contraceptive Device), 90% of its portfolio - see every assignee active in that class. Explore A61F
Ranked #26,664 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare KEN Dall Enterprise Co., Ltd. against Karius, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.9/100 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.