Where does Dober Chemical Corp. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dober Chemical Corp. ranks #39,857 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 Dober Chemical Corp. hold?

Dober Chemical Corp. holds 6 US utility patents granted between 2018 and 2024, spanning 8 technology areas.

What is Dober Chemical Corp.'s Innovation Score?

Dober Chemical Corp. has an Innovation Score of 31.5 out of 100 (38th 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 Dober Chemical Corp. focus on?

Dober Chemical Corp.'s top technology area is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge) with 3 patents, ranking #502 of 1,366 assignees active in that subclass. Grants appear in 8 CPC subclasses total.

Is Dober Chemical Corp.'s patent grant rate increasing or decreasing?

Dober Chemical Corp.'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 Dober Chemical Corp.'s patents?

Dober Chemical Corp.'s patents average 13.5 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 Dober Chemical Corp. 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

Dober Chemical Corp.

USPTO PatentsView assignee record - 6 granted patents across 8 technology areas, recorded in grant years 2018–2024. 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: C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dober ranks #39,857 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 8 technology areas.

#39,857
of 49,997 US assignees by volume: 38th percentile
by Innovation Score (31.5/100): 13.5
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R39857 · US Corporation #39,857 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 6 grants
LOWER-Q #39,857/49,997
PHOTO-FINISH Diurnal
CPC-NARROW C02F · 8 areas
INNOV-THIN 31.5/100
CLAIMS-RICH 13.5 claims/avg
TYPE-USCORP US Corporation
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Diurnal 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 Dober’s 31.5 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 6.7 pts (21%) Velocity 6.7 pts (21%) Breadth 10.0 pts (32%) Claim depth 8.1 pts (26%)

Qualcomm Incorporated · highest

85
Dober Chemical · this assignee

31
3D Lighting… · lowest

7

What this shows Dober's Innovation Score is 31.5/100 (38th 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 Dober?

Each dot is one of Dober’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). Dober’s own 13.5 claims/patent is at or below the 19.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dober's grants concentrate

Dober Chemical Corp. is a focused PatentsView assignee: 8 CPC subclasses with 50% of grants classified under C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2019. By volume, Dober sits between Diurnal Limited and Dongguan Aomeijia Electronic Co., Ltd..

Dober's three-year grant acceleration

Dober Chemical Corp. shows 2 grants in 2022–2024 against only 2 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.

Diurnal

6
Diversified Machi…

6
Diversified

6
Divyze

6
Docusign Internat…

6
Docugami

6
Domans

6
Dongguan Aomeijia

6
Dober Chemical ◀

6

What this shows Dober holds 6 patents at rank #39,885, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dober

By rank, the assignees closest to #39,885 in granted patent volume.

Leaders in C02F (Treatment OF Water)

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

Dober's Innovation Score vs. every tracked assignee

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

31 38th percentile higher than 38% 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 · 2018–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Dober Chemical Corp. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	2	33.3%
2019	1	16.7%
2021	1	16.7%
2024	2	33.3%

Which technologies does Dober Chemical Corp. patent most?

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 3

C08B - POLYSACCHARIDES; Derivatives Thereof 2

C10G - Cracking Hydrocarbon OILS; Production OF Liquid Hydrocarbon Mixtures, e.g. BY Destructive Hydrogenation, Oligomerisation, Polymerisation ; Recovery OF Hydrocarbon Oils From Oil-shale, Oil-sand, OR GASES; Refining Mixtures Mainly Consisting OF HYDROCARBONS; Reforming OF NAPHTHA; Mineral Waxes 2

B01D - Separation 2

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

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

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

C08L - Compositions OF Macromolecular 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

Dober Chemical Corp.'s patent record in context - here's where to go next.

Dober Chemical Corp.'s lead technology class is C02F (Treatment OF Water, Waste Water, Sewage, OR Sludge), 50% of its portfolio - see every assignee active in that class. Explore C02F
Ranked #39,857 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dober Chemical Corp. against Diurnal Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.5/100 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.