Where does Soko Kagaku Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Soko Kagaku Co., Ltd. ranks #13,698 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 Soko Kagaku Co., Ltd. hold?

Soko Kagaku Co., Ltd. holds 22 US utility patents granted between 2015 and 2022, spanning 9 technology areas.

What is Soko Kagaku Co., Ltd.'s Innovation Score?

Soko Kagaku Co., Ltd. has an Innovation Score of 29.2 out of 100 (30th 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 Soko Kagaku Co., Ltd. focus on?

Soko Kagaku Co., Ltd.'s top technology area is H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers) with 22 patents, ranking #114 of 857 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Soko Kagaku Co., Ltd.'s patent grant rate increasing or decreasing?

Soko Kagaku Co., Ltd.'s recent grant velocity is -62% 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 Soko Kagaku Co., Ltd.'s patents?

Soko Kagaku Co., Ltd.'s patents average 11.9 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 Soko Kagaku 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

Soko Kagaku Co., Ltd.

USPTO PatentsView assignee record - 22 granted patents across 9 technology areas, recorded in grant years 2015–2022. 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: H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Soko ranks #13,698 of 49,997 tracked US assignees by granted-patent volume, with 22 patents across 9 technology areas.

#13,698
of 49,997 US assignees by volume: 30th percentile
by Innovation Score (29.2/100): 11.9
avg claims per patent: -62%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R13698 · Foreign Corporation #13,698 · 22 grants

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

GRANTS-SMALL 22 grants
MID-PACK #13,698/49,997
PHOTO-FINISH Smartlabs
CPC-NARROW H10H · 9 areas
INNOV-THIN 29.2/100
CLAIMS-PAR 11.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -62% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Smartlabs, Inc. (±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 Soko’s 29.2 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 10.8 pts (37%) Velocity 0.6 pts (2%) Breadth 10.6 pts (36%) Claim depth 7.1 pts (24%)

Qualcomm Incorporated · highest

85
Soko Kagaku · this assignee

29
3D Lighting… · lowest

7

What this shows Soko's Innovation Score is 29.2/100 (30th 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 Soko?

Each dot is one of Soko’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). Soko’s own 11.9 claims/patent is at or below the 15.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Soko's grants concentrate

Soko Kagaku Co., Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 100% of grants classified under H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers). Peak complete grant year is 2019 (6 grants) versus a trough of 1 in 2018. By volume, Soko sits between Smartlabs, Inc. and Stewart & Stevenson LLC.

Soko's three-year grant acceleration

Soko Kagaku Co., Ltd. shows 1 grants in 2022–2024 against only 11 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.

Smartlabs

22
Smiths Heimann

22
SMS Meer

22
Soken Chemical &…

22
Solid State Stora…

22
Speedgauge

22
SPX Flow

22
Stewart & Stevens…

22
Soko Kagaku ◀

22

What this shows Soko holds 22 patents at rank #13,678, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Soko

By rank, the assignees closest to #13,678 in granted patent volume.

Leaders in H10H (Inorganic Light-emitting Semiconductor Devices Having Pot…)

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

Soko's Innovation Score vs. every tracked assignee

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

29 30th percentile higher than 30% 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 · 2015–2022

Grants by year

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

View data table

Soko Kagaku Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	9.1%
2016	5	22.7%
2017	2	9.1%
2018	1	4.5%
2019	6	27.3%
2020	1	4.5%
2021	4	18.2%
2022	1	4.5%

Which technologies does Soko Kagaku Co., Ltd. patent most?

H10H - Inorganic Light-emitting Semiconductor Devices Having Potential Barriers 22

H01L - Semiconductor Devices NOT Covered BY Class H10 12

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 3

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 2

H10D - Inorganic Electric Semiconductor Devices 2

G02B - Optical Elements, Systems OR Apparatus 1

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

Y10T - Technical Subjects Covered BY Former US Classification 1

Top 9 of 9 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

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

Soko Kagaku Co., Ltd.'s lead technology class is H10H (Inorganic Light-emitting Semiconductor Devices Having Potential Barriers), 100% of its portfolio - see every assignee active in that class. Explore H10H
Ranked #13,698 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Soko Kagaku Co., Ltd. against Smartlabs, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 29.2/100 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.