Where does Dorf Ketal Chemicals FZE rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dorf Ketal Chemicals FZE ranks #10,598 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 Dorf Ketal Chemicals FZE hold?

Dorf Ketal Chemicals FZE holds 29 US utility patents granted between 2021 and 2025, spanning 22 technology areas.

What is Dorf Ketal Chemicals FZE's Innovation Score?

Dorf Ketal Chemicals FZE has an Innovation Score of 55.0 out of 100 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dorf Ketal Chemicals FZE focus on?

Dorf Ketal Chemicals FZE's top technology area is C09K (Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere) with 23 patents, ranking #132 of 1,605 assignees active in that subclass. Grants appear in 22 CPC subclasses total.

Is Dorf Ketal Chemicals FZE's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Dorf Ketal Chemicals FZE.

What does claim depth mean for Dorf Ketal Chemicals FZE's patents?

Dorf Ketal Chemicals FZE'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 Dorf Ketal Chemicals FZE 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

Dorf Ketal Chemicals FZE

USPTO PatentsView assignee record - 29 granted patents across 22 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: C09K (Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Dorf ranks #10,598 of 49,997 tracked US assignees by granted-patent volume, with 29 patents across 22 technology areas.

#10,598
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.0/100): 11.1
avg claims per patent

USPTO PatentsView assignee plate

Corpus R10598 · Foreign Corporation #10,598 · 29 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-SMALL 29 grants
UPPER-Q #10,598/49,997
PHOTO-FINISH Critical Care…
CPC-FOCUS C09K · 22 areas
INNOV-PAR 55.0/100
CLAIMS-PAR 11.1 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2025 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Critical Care Diagnostics, 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 Dorf’s 55.0 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 11.7 pts (21%) Velocity 20.0 pts (36%) Breadth 16.6 pts (30%) Claim depth 6.6 pts (12%)

Qualcomm Incorporated · highest

85
Beihai HKC Optoelect… · near

55
Aisin AW · near

55
Dorf Ketal Chemicals… · this assignee

55
Omnitek Partners · near

55
Multivac Sepp… · near

55
3D Lighting… · lowest

7

What this shows Dorf's Innovation Score is 55.0/100 (top 7% 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 Dorf?

Each dot is one of Dorf’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). Dorf’s own 11.1 claims/patent is at or below the 13.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dorf's grants concentrate

Dorf Ketal Chemicals FZE is a focused PatentsView assignee: 22 CPC subclasses with 79.3% of grants classified under C09K (Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere). Peak complete grant year is 2024 (16 grants) versus a trough of 1 in 2022. By volume, Dorf sits between Critical Care Diagnostics, Inc. and Delta Design, Inc..

Dorf's three-year grant acceleration

Dorf Ketal Chemicals FZE shows 24 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.

Critical Care Dia…

29
Daiichi Kigenso K…

29
DAV

29
DIO

29
Daechang Seat -do…

29
Data I/O

29
Depuy Internation…

29
Delta Design

29
Dorf Ketal Chemic… ◀

29

What this shows Dorf holds 29 patents at rank #10,592, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dorf

By rank, the assignees closest to #10,592 in granted patent volume.

Leaders in C09K (Materials FOR Miscellaneous Applications)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Dorf, neither rank-band nor same-CPC leaders (those blocks stay above). In C09K (Materials FOR Miscellaneous Applications), Dorf ranks #132 of 1,605 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (55 here).

Omnitek Partners LLC 55 Aisin AW Co., Ltd. 55 Beihai HKC Optoelectronics Technology Co., Ltd. 55 Multivac Sepp Haggenmüller Se & Co. KG 55

Dorf's Innovation Score vs. every tracked assignee

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

55 Top 7% higher than 93% 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

Dorf Ketal Chemicals FZE patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	2	6.9%
2022	1	3.4%
2023	7	24.1%
2024	16	55.2%
2025partial year	3	10.3%

Which technologies does Dorf Ketal Chemicals FZE patent most?

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 23

C23F - Non-mechanical Removal OF Metallic Material From Surface ; Inhibiting Corrosion OF Metallic Material OR Incrustation IN GENERAL; Multi-step Processes FOR Surface Treatment OF Metallic Material Involving AT Least ONE Process Provided FOR IN Class C23 AND AT Least ONE Process Covered BY Subclass C21d 18

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 14

C23G - Cleaning OR De-greasing OF Metallic Material BY Chemical Methods Other Than Electrolysis 6

C11D - Detergent COMPOSITIONS; USE OF Single Substances AS DETERGENTS; Soap OR SOAP-MAKING; Resin SOAPS; Recovery OF Glycerol 4

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 4

C10L - Fuels NOT Otherwise Provided FOR; Natural GAS; Synthetic Natural GAS Obtained BY Processes NOT Covered BY Subclasses C10g OR C10K; Liquified Petroleum GAS; USE OF Additives TO Fuels OR FIRES; Fire-lighters 3

B09C - Reclamation OF Contaminated Soil 3

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 3

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 3

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 3

C05C - Nitrogenous Fertilisers 3

C05D - Inorganic Fertilisers NOT Covered BY Subclasses C05b, C05C; Fertilisers Producing Carbon Dioxide 3

C05G - Mixtures OF Fertilisers Covered Individually BY Different Subclasses OF Class C05; Mixtures OF ONE OR More Fertilisers With Materials NOT Having A Specific Fertilising Activity, e.g. Pesticides, Soil-conditioners, Wetting Agents ; Fertilisers Characterised BY Their Form 3

A23J - Protein Compositions FOR FOODSTUFFS; Working-up Proteins FOR FOODSTUFFS; Phosphatide Compositions FOR Foodstuffs 3

Top 15 of 22 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

Dorf Ketal Chemicals FZE's patent record in context - here's where to go next.

Dorf Ketal Chemicals FZE's lead technology class is C09K (Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere), 79.3% of its portfolio - see every assignee active in that class. Explore C09K
Ranked #10,598 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dorf Ketal Chemicals FZE against Critical Care Diagnostics, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.0/100 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.