Where does SEI Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), SEI Corporation ranks #21,737 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 SEI Corporation hold?

SEI Corporation holds 13 US utility patents granted between 2016 and 2023, spanning 17 technology areas.

What is SEI Corporation's Innovation Score?

SEI Corporation has an Innovation Score of 31.5 out of 100 (38th 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 SEI Corporation focus on?

SEI Corporation's top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 12 patents, ranking #1,089 of 5,963 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

Is SEI Corporation's patent grant rate increasing or decreasing?

SEI Corporation's recent grant velocity is -70% 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 SEI Corporation's patents?

SEI Corporation's patents average 10.2 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 SEI Corporation 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

SEI Corporation

USPTO PatentsView assignee record - 13 granted patents across 17 technology areas, recorded in grant years 2016–2023. 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: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, SEI ranks #21,737 of 49,997 tracked US assignees by granted-patent volume, with 13 patents across 17 technology areas.

#21,737
of 49,997 US assignees by volume: 38th percentile
by Innovation Score (31.5/100): 10.2
avg claims per patent: -70%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21737 · Foreign Corporation #21,737 · 13 grants

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

GRANTS-MICRO 13 grants
MID-PACK #21,737/49,997
PHOTO-FINISH Sanko
CPC-FOCUS Y02E · 17 areas
INNOV-THIN 31.5/100
CLAIMS-PAR 10.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -70% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Sanko Co., 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 SEI’s 31.5 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 9.1 pts (29%) Velocity 1.7 pts (5%) Breadth 14.6 pts (46%) Claim depth 6.1 pts (19%)

Qualcomm Incorporated · highest

85
SEI · this assignee

32
3D Lighting… · lowest

7

What this shows SEI's Innovation Score is 31.5/100 (38th 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 SEI?

Each dot is one of SEI’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). SEI’s own 10.2 claims/patent is at or below the 13.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where SEI's grants concentrate

SEI Corporation is a focused PatentsView assignee: 17 CPC subclasses with 92.3% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2016 (4 grants) versus a trough of 1 in 2018. By volume, SEI sits between Sanko Co., Ltd. and Shanghai Microport Medbot (GROUP) Co., Ltd..

SEI's three-year grant acceleration

SEI Corporation shows 1 grants in 2022–2024 against only 4 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.

Sanko

13
Screenovate

13
Sedonasys Systems

13
Segmint

13
Sestra Systems

13
Shandong Luye Pha…

13
Shanghai Envision…

13
Shanghai Micropor…

13
SEI ◀

13

What this shows SEI holds 13 patents at rank #21,716, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near SEI

By rank, the assignees closest to #21,716 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

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

SEI's Innovation Score vs. every tracked assignee

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

32 38th percentile higher than 38% 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 · 2016–2023

Grants by year

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

View data table

SEI Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	4	30.8%
2017	3	23.1%
2018	1	7.7%
2019	2	15.4%
2020	2	15.4%
2023	1	7.7%

Which technologies does SEI Corporation patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 12

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 12

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 9

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

Y10T - Technical Subjects Covered BY Former US Classification 2

C08L - Compositions OF Macromolecular Compounds 1

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 1

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 1

B82Y - Specific Uses OR Applications OF NANOSTRUCTURES; Measurement OR Analysis OF NANOSTRUCTURES; Manufacture OR Treatment OF Nanostructures 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

F21K - Non-electric Light Sources Using LUMINESCENCE; Light Sources Using ELECTROCHEMILUMINESCENCE; Light Sources Using Charges OF Combustible MATERIAL; Light Sources Using Semiconductor Devices AS Light-generating ELEMENTS; Light Sources NOT Otherwise Provided FOR 1

F21Y - Indexing Scheme Associated With Subclasses F21k, F21l, F21s and F21v, Relating TO THE Form OR THE Kind OF THE Light Sources OR OF THE Colour OF THE Light Emitted 1

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

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

Top 15 of 17 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

SEI Corporation's patent record in context - here's where to go next.

SEI Corporation's lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 92.3% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #21,737 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare SEI Corporation against Sanko Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.5/100 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.