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

According to USPTO PatentsView (2015–2025 granted utility patents), Sankei Giken Kogyo Co., Ltd. ranks #19,109 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 Sankei Giken Kogyo Co., Ltd. hold?

Sankei Giken Kogyo Co., Ltd. holds 15 US utility patents granted between 2016 and 2025, spanning 25 technology areas.

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

Sankei Giken Kogyo Co., Ltd. has an Innovation Score of 52.3 out of 100 (top 10% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Sankei Giken Kogyo Co., Ltd.'s recent grant velocity is +100% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Sankei Giken Kogyo Co., Ltd.'s patents average 8.3 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 Sankei Giken Kogyo 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

Sankei Giken Kogyo Co., Ltd.

Q: What technology areas does Sankei Giken Kogyo Co., Ltd. focus on?

Sankei Giken Kogyo Co., Ltd.'s top technology area is F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines) with 5 patents, ranking #157 of 487 assignees active in that subclass. Grants appear in 25 CPC subclasses total.

USPTO PatentsView assignee record - 15 granted patents across 25 technology areas, recorded in grant years 2016–2025. 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: F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Sankei ranks #19,109 of 49,997 tracked US assignees by granted-patent volume, with 15 patents across 25 technology areas.

#19,109
of 49,997 US assignees by volume: Top 10%
by Innovation Score (52.3/100): 8.3
avg claims per patent: +100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R19109 · Foreign Corporation #19,109 · 15 grants

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

GRANTS-MICRO 15 grants
MID-PACK #19,109/49,997
PHOTO-FINISH Saf-t-glo
CPC-FOCUS F01N · 25 areas
INNOV-PAR 52.3/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Saf-t-glo Limited (±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 Sankei’s 52.3 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 9.6 pts (18%) Velocity 20.0 pts (38%) Breadth 17.7 pts (34%) Claim depth 5.0 pts (10%)

Qualcomm Incorporated · highest

85
Sankei Giken Kogyo · this assignee

52
3D Lighting… · lowest

7

What this shows Sankei's Innovation Score is 52.3/100 (top 10% 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 Sankei?

Each dot is one of Sankei’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). Sankei’s own 8.3 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.

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

Where Sankei's grants concentrate

Sankei Giken Kogyo Co., Ltd. is a focused PatentsView assignee: 25 CPC subclasses with 33.3% of grants classified under F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines). Peak complete grant year is 2024 (4 grants) versus a trough of 1 in 2016. By volume, Sankei sits between Saf-t-glo Limited and Scanadu Incorporated.

Sankei's three-year grant acceleration

Sankei Giken Kogyo Co., Ltd. shows 7 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.

Saf-t-glo

15
Saic Motor

15
Saife

15
Saint-gobain Ecop…

15
Sarcode Bioscience

15
Sawafuji Electric

15
Sawai Pharmaceuti…

15
Scanadu Incorpora…

15
Sankei Giken Kogyo ◀

15

What this shows Sankei holds 15 patents at rank #19,102, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sankei

By rank, the assignees closest to #19,102 in granted patent volume.

Leaders in F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR E…)

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

Sankei's Innovation Score vs. every tracked assignee

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

52 Top 10% higher than 90% 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 · 2016–2025

Grants by year

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

View data table

Sankei Giken Kogyo Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	6.7%
2018	2	13.3%
2019	1	6.7%
2020	1	6.7%
2022	2	13.3%
2023	1	6.7%
2024	4	26.7%
2025partial year	3	20.0%

Which technologies does Sankei Giken Kogyo Co., Ltd. patent most?

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 5

H01Q - Antennas, i.e. Radio Aerials 3

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 3

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 3

B60J - Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles 3

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 2

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

Y10T - Technical Subjects Covered BY Former US Classification 2

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 2

F02D - Controlling Combustion Engines 2

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 1

A45F - Travelling OR Camp EQUIPMENT: Sacks OR Packs Carried ON THE Body 1

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 1

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

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 1

Top 15 of 25 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

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

Sankei Giken Kogyo Co., Ltd.'s lead technology class is F01N (Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines), 33.3% of its portfolio - see every assignee active in that class. Explore F01N
Ranked #19,109 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sankei Giken Kogyo Co., Ltd. against Saf-t-glo Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.3/100 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.