Where does Kemira OYJ rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kemira OYJ ranks #1,769 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 Kemira OYJ hold?

Kemira OYJ holds 230 US utility patents granted between 2015 and 2025, spanning 75 technology areas.

What is Kemira OYJ's Innovation Score?

Kemira OYJ has an Innovation Score of 59.9 out of 100 (top 4% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Kemira OYJ's patent grant rate increasing or decreasing?

Kemira OYJ's recent grant velocity is +41% 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 Kemira OYJ's patents?

Kemira OYJ's patents average 16.7 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 Kemira OYJ 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

Kemira OYJ

Q: What technology areas does Kemira OYJ focus on?

Kemira OYJ's top technology area is D21H (Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherwise Provided FOR) with 111 patents, ranking #4 of 361 assignees active in that subclass. Grants appear in 75 CPC subclasses total.

USPTO PatentsView assignee record - 230 granted patents across 75 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: D21H (Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherw).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Kemira ranks #1,769 of 49,997 tracked US assignees by granted-patent volume, with 230 patents across 75 technology areas.

#1,769
of 49,997 US assignees by volume: Top 4%
by Innovation Score (59.9/100): 16.7
avg claims per patent: +41%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1769 · Foreign Corporation #1,769 · 230 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MID 230 grants
TOP-DECILE #1,769/49,997
PHOTO-FINISH Agency FOR Defense…
CPC-WIDE D21H · 75 areas
INNOV-PAR 59.9/100
CLAIMS-RICH 16.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +41% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Agency FOR Defense Development (±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 Kemira’s 59.9 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 18.8 pts (31%) Velocity 6.0 pts (10%) Breadth 25.0 pts (42%) Claim depth 10.0 pts (17%)

Qualcomm Incorporated · highest

85
Emerson Climate · near

60
PPC Broadband · near

60
Kemira OYJ · this assignee

60
Mississippi State… · near

60
Research Triangle… · near

60
3D Lighting… · lowest

7

What this shows Kemira's Innovation Score is 59.9/100 (top 4% 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 Kemira?

Each dot is one of Kemira’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). Kemira’s own 16.7 claims/patent is ABOVE the 11.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

How Kemira's grant cadence moved

Between 2020–2024, Kemira OYJ received 127 grants versus 90 in 2015–2019 (+41% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2020 at 32 grants and bottomed in 2015 at 13. Lead class D21H accounts for 48.3% of the portfolio across 75 subclasses. Volume neighbours: Agency FOR Defense Development (#1,765) and Washington State University (#1,773).

Kemira's three-year grant acceleration

From 2019–2021 to 2022–2024, Kemira OYJ moved from 75 to 68 grants (0.91x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,452. See the growth leaderboard.

Agency FOR Defens…

230
American Megatren…

230
Autel Intelligent…

230
Hefei BOE Joint T…

230
Kolon Industries

230
Total Research &…

230
Tianjin University

230
Washington State…

230
Kemira OYJ ◀

230

What this shows Kemira holds 230 patents at rank #1,769, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kemira

By rank, the assignees closest to #1,769 in granted patent volume.

Leaders in D21H (Pulp Compositions)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Kemira, neither rank-band nor same-CPC leaders (those blocks stay above). In D21H (Pulp Compositions), Kemira ranks #4 of 361 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (60 here).

Research Triangle Institute 60 Mississippi State University 60 Emerson Climate Technologies, Inc. 60 PPC Broadband, Inc. 60

Similar claim depth

Nearest assignees by average claims per patent (16.7 here).

United States Gypsum Company 16.7 avg Gree Holdings, Inc. 16.7 avg Cooper Technologies Company 16.7 avg Hutchinson Technology Incorporated 16.7 avg

Kemira's Innovation Score vs. every tracked assignee

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

60 Top 4% higher than 96% 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

Kemira OYJ patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	13	5.7%
2016	18	7.8%
2017	20	8.7%
2018	23	10.0%
2019	16	7.0%
2020	32	13.9%
2021	27	11.7%
2022	27	11.7%
2023	20	8.7%
2024	21	9.1%
2025partial year	13	5.7%

Which technologies does Kemira OYJ patent most?

D21H - Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherwise Provided FOR 111

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 55

C08L - Compositions OF Macromolecular Compounds 41

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 34

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 31

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 29

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 21

D21C - Production OF Cellulose BY Removing Non-cellulose Substances From Cellulose-containing MATERIALS; Regeneration OF Pulping LIQUORS; Apparatus Therefor 20

B01D - Separation 16

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 16

A01N - Preservation OF Bodies OF Humans OR Animals OR Plants OR Parts Thereof ; Biocides, e.g. AS Disinfectants, AS Pesticides OR AS Herbicides ; Pest Repellants OR ATTRACTANTS; Plant Growth Regulators 11

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 10

C07C - Acyclic OR Carbocyclic Compounds 10

D21F - Paper-making MACHINES; Methods OF Producing Paper Thereon 9

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 9

Top 15 of 75 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

Kemira OYJ's patent record in context - here's where to go next.

Kemira OYJ's lead technology class is D21H (Pulp COMPOSITIONS; Preparation Thereof NOT Covered BY Subclasses D21c OR D21D; Impregnating OR Coating OF PAPER; Treatment OF Finished Paper NOT Covered BY Class B31 OR Subclass D21G; Paper NOT Otherw), 48.3% of its portfolio - see every assignee active in that class. Explore D21H
Ranked #1,769 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kemira OYJ against Agency FOR Defense Development, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 59.9/100 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.