Where does Seibu Electric & Machinery Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Seibu Electric & Machinery Co., Ltd. ranks #33,202 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 Electric & Machinery Co., Ltd. hold?

Seibu Electric & Machinery Co., Ltd. holds 8 US utility patents granted between 2017 and 2023, spanning 3 technology areas.

What is Seibu Electric & Machinery Co., Ltd.'s Innovation Score?

Seibu Electric & Machinery Co., Ltd. has an Innovation Score of 33.7 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%).

Is Seibu Electric & Machinery Co., Ltd.'s patent grant rate increasing or decreasing?

Seibu Electric & Machinery Co., Ltd.'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 Seibu Electric & Machinery Co., Ltd.'s patents?

Seibu Electric & Machinery Co., Ltd.'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 Seibu Electric & Machinery 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 Electric & Machinery Co., Ltd.

Q: What technology areas does Seibu Electric & Machinery Co., Ltd. focus on?

Seibu Electric & Machinery Co., Ltd.'s top technology area is B23H (Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal) with 8 patents, ranking #6 of 57 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

USPTO PatentsView assignee record - 8 granted patents across 3 technology areas, recorded in grant years 2017–2023. 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: B23H (Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Seibu ranks #33,202 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 3 technology areas.

#33,202
of 49,997 US assignees by volume: 45th percentile
by Innovation Score (33.7/100): 11.1
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R33202 · Foreign Corporation #33,202 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #33,202/49,997
PHOTO-FINISH Securiport
CPC-NARROW B23H · 3 areas
INNOV-THIN 33.7/100
CLAIMS-PAR 11.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Securiport LLC (±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 33.7 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 7.6 pts (23%) Velocity 13.3 pts (39%) Breadth 6.1 pts (18%) Claim depth 6.7 pts (20%)

Qualcomm Incorporated · highest

85
Seibu Electric &… · this assignee

34
3D Lighting… · lowest

7

What this shows Seibu's Innovation Score is 33.7/100 (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 11.1 claims/patent is at or below the 17.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Seibu's grants concentrate

Seibu Electric & Machinery Co., Ltd. is a focused PatentsView assignee: 3 CPC subclasses with 100% of grants classified under B23H (Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal). Peak complete grant year is 2022 (3 grants) versus a trough of 1 in 2023. By volume, Seibu sits between Securiport LLC and Serres Oy.

Seibu's three-year grant acceleration

Seibu Electric & Machinery Co., Ltd. shows 4 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.

Securiport

8
Security First In…

8
Seda Internationa…

8
Seibersdorf Labor

8
Semnur Pharmaceut…

8
Senecio

8
Sensia Netherland…

8
Serres Oy

8
Seibu Electric &… ◀

8

What this shows Seibu holds 8 patents at rank #33,338, 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 #33,338 in granted patent volume.

Leaders in B23H (Working OF Metal BY THE Action OF A High Concentration OF…)

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 · 2017–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Seibu Electric & Machinery Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	2	25.0%
2019	2	25.0%
2022	3	37.5%
2023	1	12.5%

Which technologies does Seibu Electric & Machinery Co., Ltd. patent most?

B23H - Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal 8

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 3

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 1

Top 3 of 3 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 Electric & Machinery Co., Ltd.'s patent record in context - here's where to go next.

Seibu Electric & Machinery Co., Ltd.'s lead technology class is B23H (Working OF Metal BY THE Action OF A High Concentration OF Electric Current ON A Workpiece Using AN Electrode Which Takes THE Place OF A TOOL; Such Working Combined With Other Forms OF Working OF Metal), 100% of its portfolio - see every assignee active in that class. Explore B23H
Ranked #33,202 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Seibu Electric & Machinery Co., Ltd. against Securiport LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.7/100 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.