Where does Seibu Giken Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Seibu Giken Co., Ltd. ranks #18,089 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 Seibu Giken Co., Ltd. hold?

Seibu Giken Co., Ltd. holds 16 US utility patents granted between 2015 and 2024, spanning 11 technology areas.

What is Seibu Giken Co., Ltd.'s Innovation Score?

Seibu Giken Co., Ltd. has an Innovation Score of 33.6 out of 100 (45th 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 Seibu Giken Co., Ltd. focus on?

Seibu Giken Co., Ltd.'s top technology area is B01D (Separation) with 14 patents, ranking #346 of 3,536 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

Is Seibu Giken Co., Ltd.'s patent grant rate increasing or decreasing?

Seibu Giken Co., Ltd.'s recent grant velocity is +67% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Seibu Giken Co., Ltd.'s patents?

Seibu Giken Co., Ltd.'s patents average 16.4 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 Seibu Giken Co., Ltd. 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

Seibu Giken Co., Ltd.

USPTO PatentsView assignee record - 16 granted patents across 11 technology areas, recorded in grant years 2015–2024. 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: B01D (Separation).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Seibu ranks #18,089 of 49,997 tracked US assignees by granted-patent volume, with 16 patents across 11 technology areas.

#18,089
of 49,997 US assignees by volume: 45th percentile
by Innovation Score (33.6/100): 16.4
avg claims per patent: +67%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R18089 · Foreign Corporation #18,089 · 16 grants

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

GRANTS-MICRO 16 grants
MID-PACK #18,089/49,997
PHOTO-FINISH Seal-ryt
CPC-FOCUS B01D · 11 areas
INNOV-THIN 33.6/100
CLAIMS-RICH 16.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +67% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Seal-ryt Corp. (±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 Seibu’s 33.6 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 9.8 pts (29%) Velocity 2.2 pts (7%) Breadth 11.7 pts (35%) Claim depth 9.9 pts (29%)

Qualcomm Incorporated · highest

85
Seibu Giken · this assignee

34
3D Lighting… · lowest

7

What this shows Seibu's Innovation Score is 33.6/100 (45th 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 Seibu?

Each dot is one of Seibu’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). Seibu’s own 16.4 claims/patent is ABOVE the 7.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Seibu's grants concentrate

Seibu Giken Co., Ltd. is a focused PatentsView assignee: 11 CPC subclasses with 87.5% of grants classified under B01D (Separation). Peak complete grant year is 2021 (4 grants) versus a trough of 1 in 2015. By volume, Seibu sits between Seal-ryt Corp. and Shenzhen Dogcare Innovation AND Technology Co., Ltd..

Seibu's three-year grant acceleration

Seibu Giken Co., Ltd. shows 3 grants in 2022–2024 against only 9 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.

Seal-ryt

16
Seca

16
Secop

16
Seed

16
Shanghai Lees Man…

16
Shaw Development

16
Shenzhen Bling Li…

16
Shenzhen Dogcare…

16
Seibu Giken ◀

16

What this shows Seibu holds 16 patents at rank #18,074, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Seibu

By rank, the assignees closest to #18,074 in granted patent volume.

Leaders in B01D (Separation)

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

Seibu's Innovation Score vs. every tracked assignee

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

34 45th percentile higher than 45% 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 · 2015–2024

Grants by year

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

View data table

Seibu Giken Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	6.3%
2018	3	18.8%
2019	2	12.5%
2020	3	18.8%
2021	4	25.0%
2022	1	6.3%
2023	1	6.3%
2024	1	6.3%

Which technologies does Seibu Giken Co., Ltd. patent most?

B01D - Separation 14

Y02C - Capture, Storage, Sequestration OR Disposal OF Greenhouse Gases [GHG] 11

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 8

Y02A - Technologies FOR Adaptation TO Climate Change 4

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 2

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 2

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 2

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

F26B - Drying Solid Materials OR Objects BY Removing Liquid Therefrom 1

H01L - Semiconductor Devices NOT Covered BY Class H10 1

H10K - Organic Electric Solid-state Devices 1

Top 11 of 11 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

Seibu Giken Co., Ltd.'s patent record in context - here's where to go next.

Seibu Giken Co., Ltd.'s lead technology class is B01D (Separation), 87.5% of its portfolio - see every assignee active in that class. Explore B01D
Ranked #18,089 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Seibu Giken Co., Ltd. against Seal-ryt Corp., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.6/100 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.