Where does DL Chemical Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), DL Chemical Co., Ltd. ranks #18,541 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 DL Chemical Co., Ltd. hold?

DL Chemical Co., Ltd. holds 15 US utility patents granted between 2021 and 2025, spanning 11 technology areas.

What is DL Chemical Co., Ltd.'s Innovation Score?

DL Chemical Co., Ltd. has an Innovation Score of 47.9 out of 100 (top 17% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does DL Chemical Co., Ltd. focus on?

DL Chemical Co., Ltd.'s top technology area is C08F (Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds) with 12 patents, ranking #221 of 1,231 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

Is DL Chemical Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for DL Chemical Co., Ltd..

What does claim depth mean for DL Chemical Co., Ltd.'s patents?

DL Chemical Co., Ltd.'s patents average 11.1 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 DL Chemical 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

DL Chemical Co., Ltd.

USPTO PatentsView assignee record - 15 granted patents across 11 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: C08F (Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, DL ranks #18,541 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 11 technology areas.

#18,541
of 49,997 US assignees by volume: Top 17%
by Innovation Score (47.9/100): 11.1
avg claims per patent

USPTO PatentsView assignee plate

Corpus R18541 · Foreign Corporation #18,541 · 15 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 15 grants
MID-PACK #18,541/49,997
PHOTO-FINISH Dialpad
CPC-FOCUS C08F · 11 areas
INNOV-PAR 47.9/100
CLAIMS-PAR 11.1 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2025 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Dialpad, 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 DL’s 47.9 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 9.6 pts (20%) Velocity 20.0 pts (42%) Breadth 11.7 pts (24%) Claim depth 6.6 pts (14%)

Qualcomm Incorporated · highest

85
DL Chemical · this assignee

48
3D Lighting… · lowest

7

What this shows DL's Innovation Score is 47.9/100 (top 17% 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 DL?

Each dot is one of DL’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). DL’s own 11.1 claims/patent is at or below the 15.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where DL's grants concentrate

DL Chemical Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 80% of grants classified under C08F (Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds). Peak complete grant year is 2022 (5 grants) versus a trough of 2 in 2024. By volume, DL sits between Dialpad, Inc. and Dpix, LLC.

DL's three-year grant acceleration

DL Chemical Co., Ltd. shows 11 grants in 2022–2024 against only 3 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.

Dialpad

15
DIC (Tokyo)

15
Dipharma Francis…

15
Dish Network

15
DNA Script

15
Dongguan Yulong T…

15
Doselogix

15
Dpix

15
DL Chemical ◀

15

What this shows DL holds 15 patents at rank #18,532, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near DL

By rank, the assignees closest to #18,532 in granted patent volume.

Leaders in C08F (Macromolecular Compounds Obtained BY Reactions Only Invol…)

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

DL's Innovation Score vs. every tracked assignee

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

48 Top 17% higher than 83% 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

DL Chemical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	3	20.0%
2022	5	33.3%
2023	4	26.7%
2024	2	13.3%
2025partial year	1	6.7%

Which technologies does DL Chemical Co., Ltd. patent most?

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 12

C08L - Compositions OF Macromolecular Compounds 7

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 4

C10N - Indexing Scheme Associated With Subclass C10m Relating TO Lubricating Compositions 4

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

C07C - Acyclic OR Carbocyclic Compounds 1

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

B60C - Vehicle TYRES; Tyre INFLATION; Tyre CHANGING; Connecting Valves TO Inflatable Elastic Bodies IN GENERAL; Devices OR Arrangements Related TO Tyres 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

Top 11 of 11 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

DL Chemical Co., Ltd.'s patent record in context - here's where to go next.

DL Chemical Co., Ltd.'s lead technology class is C08F (Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds), 80% of its portfolio - see every assignee active in that class. Explore C08F
Ranked #18,541 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare DL Chemical Co., Ltd. against Dialpad, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 47.9/100 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.