Where does SEI Optifrontier Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), SEI Optifrontier Co., Ltd. ranks #5,036 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 Optifrontier Co., Ltd. hold?

SEI Optifrontier Co., Ltd. holds 69 US utility patents granted between 2015 and 2025, spanning 16 technology areas.

What is SEI Optifrontier Co., Ltd.'s Innovation Score?

SEI Optifrontier Co., Ltd. has an Innovation Score of 34.8 out of 100 (49th 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 Optifrontier Co., Ltd. focus on?

SEI Optifrontier Co., Ltd.'s top technology area is G02B (Optical Elements, Systems OR Apparatus) with 55 patents, ranking #282 of 4,891 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

Is SEI Optifrontier Co., Ltd.'s patent grant rate increasing or decreasing?

SEI Optifrontier Co., Ltd.'s recent grant velocity is -55% 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 Optifrontier Co., Ltd.'s patents?

SEI Optifrontier Co., Ltd.'s patents average 7.4 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 SEI Optifrontier 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

SEI Optifrontier Co., Ltd.

USPTO PatentsView assignee record - 69 granted patents across 16 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: G02B (Optical Elements, Systems OR Apparatus).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, SEI ranks #5,036 of 49,997 tracked US assignees by granted-patent volume, with 69 patents across 16 technology areas.

#5,036
of 49,997 US assignees by volume: 49th percentile
by Innovation Score (34.8/100): 7.4
avg claims per patent: -55%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5036 · Foreign Corporation #5,036 · 69 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 69 grants
UPPER-Q #5,036/49,997
PHOTO-FINISH Oura Health Oy
CPC-FOCUS G02B · 16 areas
INNOV-THIN 34.8/100
CLAIMS-SPARSE 7.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -55% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Oura Health Oy (±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 34.8 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 14.7 pts (42%) Velocity 1.5 pts (4%) Breadth 14.1 pts (41%) Claim depth 4.4 pts (13%)

Qualcomm Incorporated · highest

85
Zhejiang Chint… · near

35
Hebei University OF… · near

35
SEI Optifrontier · this assignee

35
Aortic Innovations · near

35
HMD Global Oy · near

35
3D Lighting… · lowest

7

What this shows SEI's Innovation Score is 34.8/100 (49th 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 7.4 claims/patent is at or below the 13.6 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 Optifrontier Co., Ltd. is a focused PatentsView assignee: 16 CPC subclasses with 79.7% of grants classified under G02B (Optical Elements, Systems OR Apparatus). Peak complete grant year is 2015 (15 grants) versus a trough of 1 in 2023. By volume, SEI sits between Oura Health Oy and Stealth BioTherapeutics Inc..

SEI's three-year grant acceleration

From 2019–2021 to 2022–2024, SEI Optifrontier Co., Ltd. moved from 22 to 5 grants (0.23x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Oura Health Oy

69
PAX Labs

69
Rfmicron

69
Rebellions

69
Shinano Kenshi

69
Sanko Tekstil Isl…

69
Sanofi Pasteur

69
Stealth Biotherap…

69
SEI Optifrontier ◀

69

What this shows SEI holds 69 patents at rank #5,034, 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 #5,034 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for SEI, neither rank-band nor same-CPC leaders (those blocks stay above). In G02B (Optical Elements), SEI ranks #282 of 4,891 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (35 here).

Hebei University OF Science AND Technology 35 HMD Global Oy 35 Zhejiang Chint Electrics Co., Ltd. 35 Aortic Innovations, LLC 35

Similar claim depth

Nearest assignees by average claims per patent (7.4 here).

Orbit Irrigation Products, LLC 7.4 avg Jura Elektroapparate AG 7.4 avg Fujitsu Component Limited 7.4 avg Continental Reifen Deutschland GmbH 7.4 avg

SEI's Innovation Score vs. every tracked assignee

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

35 49th percentile higher than 49% 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

SEI Optifrontier Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	15	21.7%
2016	9	13.0%
2017	4	5.8%
2018	13	18.8%
2019	6	8.7%
2020	7	10.1%
2021	9	13.0%
2022	4	5.8%
2023	1	1.4%
2025partial year	1	1.4%

Which technologies does SEI Optifrontier Co., Ltd. patent most?

G02B - Optical Elements, Systems OR Apparatus 55

Y10T - Technical Subjects Covered BY Former US Classification 6

G06F - Electric Digital Data Processing 5

B26D - CUTTING; Details Common TO Machines FOR Perforating, Punching, Cutting-out, Stamping-out OR Severing 4

G08B - Signalling OR Calling SYSTEMS; Order TELEGRAPHS; Alarm Systems 4

H04B - Transmission 3

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 2

H02G - Installation OF Electric Cables OR Lines, OR OF Combined Optical AND Electric Cables OR Lines 2

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 2

H04W - Wireless Communication Networks 2

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 1

B25B - Tools OR Bench Devices NOT Otherwise Provided FOR, FOR Fastening, Connecting, Disengaging OR Holding 1

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 1

G06Q - Information AND Communication Technology [ICT] Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory PURPOSES; Systems OR Methods Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory Purposes, NOT Otherwise Provided FOR 1

H01S - Devices Using THE Process OF Light Amplification BY Stimulated Emission OF Radiation [LASER] TO Amplify OR Generate LIGHT; Devices Using Stimulated Emission OF Electromagnetic Radiation IN Wave Ranges Other Than Optical 1

Top 15 of 16 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 Optifrontier Co., Ltd.'s patent record in context - here's where to go next.

SEI Optifrontier Co., Ltd.'s lead technology class is G02B (Optical Elements, Systems OR Apparatus), 79.7% of its portfolio - see every assignee active in that class. Explore G02B
Ranked #5,036 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare SEI Optifrontier Co., Ltd. against Oura Health Oy, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.8/100 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.