Where does Sefar AG rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sefar AG ranks #25,152 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 Sefar AG hold?

Sefar AG holds 11 US utility patents granted between 2016 and 2025, spanning 26 technology areas.

What is Sefar AG's Innovation Score?

Sefar AG has an Innovation Score of 34.1 out of 100 (47th 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 Sefar AG focus on?

Sefar AG's top technology area is B01D (Separation) with 6 patents, ranking #781 of 3,536 assignees active in that subclass. Grants appear in 26 CPC subclasses total.

Is Sefar AG's patent grant rate increasing or decreasing?

Sefar AG's recent grant velocity is -57% 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 Sefar AG's patents?

Sefar AG's patents average 12.6 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 Sefar AG 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

Sefar AG

USPTO PatentsView assignee record - 11 granted patents across 26 technology areas, recorded in grant years 2016–2025. 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sefar ranks #25,152 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 26 technology areas.

#25,152
of 49,997 US assignees by volume: 47th percentile
by Innovation Score (34.1/100): 12.6
avg claims per patent: -57%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R25152 · Foreign Corporation #25,152 · 11 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 11 grants
MID-PACK #25,152/49,997
PHOTO-FINISH Secretlab SG Pte
CPC-FOCUS B01D · 26 areas
INNOV-THIN 34.1/100
CLAIMS-RICH 12.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -57% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Secretlab SG Pte. 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 Sefar’s 34.1 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 8.6 pts (25%) Velocity 0.0 pts (0%) Breadth 18.0 pts (53%) Claim depth 7.5 pts (22%)

Qualcomm Incorporated · highest

85
Sefar · this assignee

34
3D Lighting… · lowest

7

What this shows Sefar's Innovation Score is 34.1/100 (47th 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 Sefar?

Each dot is one of Sefar’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). Sefar’s own 12.6 claims/patent is at or below the 16.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Sefar's grants concentrate

Sefar AG is a focused PatentsView assignee: 26 CPC subclasses with 54.5% of grants classified under B01D (Separation). Peak complete grant year is 2019 (3 grants) versus a trough of 1 in 2021. By volume, Sefar sits between Secretlab SG Pte. Ltd. and Senseair AB.

Secretlab SG Pte

11
Sectra AB

11
Secure Communicat…

11
Securitymetrics

11
Segway

11
Semiconductor Ene…

11
Senscomm Semicond…

11
Senseair AB

11
Sefar ◀

11

What this shows Sefar holds 11 patents at rank #25,232, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sefar

By rank, the assignees closest to #25,232 in granted patent volume.

Leaders in B01D (Separation)

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

Sefar's Innovation Score vs. every tracked assignee

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

34 47th percentile higher than 47% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Sefar AG patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	18.2%
2018	2	18.2%
2019	3	27.3%
2020	2	18.2%
2021	1	9.1%
2025partial year	1	9.1%

Which technologies does Sefar AG patent most?

B01D - Separation 6

D03D - Woven FABRICS; Methods OF WEAVING; Looms 5

D10B - Indexing Scheme Associated With Sublasses OF Section D, Relating TO Textiles 4

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 4

D06M - Treatment, NOT Provided FOR Elsewhere IN Class D06, OF Fibres, Threads, Yarns, Fabrics, Feathers OR Fibrous Goods Made From Such Materials 4

H10F - Inorganic Semiconductor Devices Sensitive TO Infrared Radiation, Light, Electromagnetic Radiation OF Shorter Wavelength OR Corpuscular Radiation 3

Y10T - Technical Subjects Covered BY Former US Classification 3

D04H - Making Textile Fabrics, e.g. From Fibres OR Filamentary Material ; Fabrics Made BY Such Processes OR Apparatus, e.g. Felts, Non-woven FABRICS; COTTON-WOOL; Wadding ; ; Non-woven Fabrics From Staple Fibres, Filaments OR Yarns, Bonded With AT Least ONE Web-like Material During Their Consolidation 2

D01D - Mechanical Methods OR Apparatus IN THE Manufacture OF Artificial Filaments, Threads, Fibres, Bristles OR Ribbons 2

D06P - Dyeing OR Printing TEXTILES; Dyeing Leather, Furs OR Solid Macromolecular Substances IN ANY Form 2

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

H10K - Organic Electric Solid-state Devices 1

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 1

Top 15 of 26 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

Sefar AG's patent record in context - here's where to go next.

Sefar AG's lead technology class is B01D (Separation), 54.5% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #25,152 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sefar AG against Secretlab SG Pte. Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.1/100 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.