Where does Dover Chemical Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dover Chemical Corporation ranks #31,438 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 Dover Chemical Corporation hold?

Dover Chemical Corporation holds 8 US utility patents granted between 2015 and 2021, spanning 8 technology areas.

What is Dover Chemical Corporation's Innovation Score?

Dover Chemical Corporation has an Innovation Score of 27.3 out of 100 (23rd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dover Chemical Corporation focus on?

Dover Chemical Corporation's top technology area is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients) with 4 patents, ranking #641 of 1,963 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is Dover Chemical Corporation's patent grant rate increasing or decreasing?

Dover Chemical Corporation's recent grant velocity is -40% 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 Dover Chemical Corporation's patents?

Dover Chemical Corporation's patents average 16.1 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 Dover Chemical Corporation 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

Dover Chemical Corporation

USPTO PatentsView assignee record - 8 granted patents across 8 technology areas, recorded in grant years 2015–2021. 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: C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Dover ranks #31,438 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 8 technology areas.

#31,438
of 49,997 US assignees by volume: 23rd percentile
by Innovation Score (27.3/100): 16.1
avg claims per patent: -40%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31438 · US Corporation #31,438 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-DOWN · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #31,438/49,997
PHOTO-FINISH Dongguan Boyuan…
CPC-NARROW C08K · 8 areas
INNOV-THIN 27.3/100
CLAIMS-RICH 16.1 claims/avg
TYPE-USCORP US Corporation
VEL-DOWN -40% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Dongguan Boyuan Intelligent Technology 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 Dover’s 27.3 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 7.6 pts (28%) Velocity 0.0 pts (0%) Breadth 10.0 pts (37%) Claim depth 9.7 pts (36%)

Qualcomm Incorporated · highest

85
Dover Chemical · this assignee

27
3D Lighting… · lowest

7

What this shows Dover's Innovation Score is 27.3/100 (23rd 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 Dover?

Each dot is one of Dover’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). Dover’s own 16.1 claims/patent is ABOVE the 7.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Dover's grants concentrate

Dover Chemical Corporation is a focused PatentsView assignee: 8 CPC subclasses with 50% of grants classified under C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2015. By volume, Dover sits between Dongguan Boyuan Intelligent Technology Co., Ltd and Drax Power Limited.

Dongguan Boyuan I…

8
Dongguan Dile Int…

8
Dongguan Jierui S…

8
Dornoch Medical S…

8
Dover Fueling Sol…

8
Draka Comteq Fran…

8
Drapho Technology

8
Drax Power

8
Dover Chemical ◀

8

What this shows Dover holds 8 patents at rank #31,459, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dover

By rank, the assignees closest to #31,459 in granted patent volume.

Leaders in C08K (Use of inorganic or non-macromolecular organic substances…)

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

Dover's Innovation Score vs. every tracked assignee

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

27 23rd percentile higher than 23% 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 · 2015–2021

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Dover Chemical Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	12.5%
2016	1	12.5%
2017	1	12.5%
2018	2	25.0%
2020	2	25.0%
2021	1	12.5%

Which technologies does Dover Chemical Corporation patent most?

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 4

C08L - Compositions OF Macromolecular Compounds 4

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 3

C10N - Indexing Scheme Associated With Subclass C10m Relating TO Lubricating Compositions 3

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 3

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 1

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 1

C07C - Acyclic OR Carbocyclic Compounds 1

Top 8 of 8 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

Dover Chemical Corporation's patent record in context - here's where to go next.

Dover Chemical Corporation's lead technology class is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients), 50% of its portfolio - see every assignee active in that class. Explore C08K
Ranked #31,438 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dover Chemical Corporation against Dongguan Boyuan Intelligent Technology Co., Ltd, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.3/100 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.