Where does Santoku Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Santoku Corporation ranks #9,863 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 Santoku Corporation hold?

Santoku Corporation holds 32 US utility patents granted between 2015 and 2024, spanning 27 technology areas.

What is Santoku Corporation's Innovation Score?

Santoku Corporation has an Innovation Score of 37.8 out of 100 (top 43% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Santoku Corporation focus on?

Santoku Corporation's top technology area is C22C (Alloys) with 18 patents, ranking #99 of 948 assignees active in that subclass. Grants appear in 27 CPC subclasses total.

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

Santoku Corporation's recent grant velocity is -67% 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 Santoku Corporation's patents?

Santoku Corporation's patents average 8.6 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 Santoku 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

Santoku Corporation

USPTO PatentsView assignee record - 32 granted patents across 27 technology areas, recorded in grant years 2015–2024. 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: C22C (Alloys).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Santoku ranks #9,863 of 49,997 tracked US assignees by granted-patent volume, with 32 patents across 27 technology areas.

#9,863
of 49,997 US assignees by volume: Top 43%
by Innovation Score (37.8/100): 8.6
avg claims per patent: -67%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R9863 · Foreign Corporation #9,863 · 32 grants

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

GRANTS-SMALL 32 grants
UPPER-Q #9,863/49,997
PHOTO-FINISH Raindance
CPC-FOCUS C22C · 27 areas
INNOV-THIN 37.8/100
CLAIMS-PAR 8.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -67% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Raindance Technologies, 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 Santoku’s 37.8 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 12.1 pts (32%) Velocity 2.2 pts (6%) Breadth 18.4 pts (49%) Claim depth 5.1 pts (13%)

Qualcomm Incorporated · highest

85
Rexnord Flattop… · near

38
Santoku · this assignee

38
Think Laboratory · near

38
TQ Delta · near

38
Xiamen Soothingware… · near

38
3D Lighting… · lowest

7

What this shows Santoku's Innovation Score is 37.8/100 (top 43% 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 Santoku?

Each dot is one of Santoku’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). Santoku’s own 8.6 claims/patent is at or below the 10.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Santoku's grants concentrate

Santoku Corporation is a focused PatentsView assignee: 27 CPC subclasses with 56.3% of grants classified under C22C (Alloys). Peak complete grant year is 2017 (7 grants) versus a trough of 1 in 2015. By volume, Santoku sits between Raindance Technologies, Inc. and Shanghai Autoflight Co., Ltd..

Santoku's three-year grant acceleration

Santoku Corporation shows 3 grants in 2022–2024 against only 9 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.

Raindance

32
Redline Communica…

32
Reliance Controls

32
Resmed R&D Germany

32
Sapien Semiconduc…

32
Schneider Electri…

32
Sekisui House

32
Shanghai Autoflig…

32
Santoku ◀

32

What this shows Santoku holds 32 patents at rank #9,861, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Santoku

By rank, the assignees closest to #9,861 in granted patent volume.

Leaders in C22C (Alloys)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Santoku, neither rank-band nor same-CPC leaders (those blocks stay above). In C22C (Alloys), Santoku ranks #99 of 948 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (38 here).

Xiamen Soothingware Sanitary Co., Ltd. 38 Think Laboratory Co., Ltd. 38 Rexnord Flattop Europe B.V. 38 TQ Delta, LLC 38

Santoku's Innovation Score vs. every tracked assignee

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

38 Top 43% higher than 57% 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 · 2015–2024

Grants by year

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

View data table

Santoku Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	3.1%
2016	5	15.6%
2017	7	21.9%
2018	7	21.9%
2019	4	12.5%
2020	3	9.4%
2021	2	6.3%
2022	2	6.3%
2024	1	3.1%

Which technologies does Santoku Corporation patent most?

C22C - Alloys 18

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 14

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 13

B22F - Working Metallic POWDER; Manufacture OF Articles From Metallic POWDER; Making Metallic Powder ; Apparatus OR Devices Specially Adapted FOR Metallic Powder 12

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 11

C22F - Changing THE Physical Structure OF Non-ferrous Metals AND Non-ferrous Alloys 6

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 6

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 6

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 5

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 5

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 4

B01D - Separation 4

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 4

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 4

C21D - Modifying THE Physical Structure OF Ferrous METALS; General Devices FOR Heat Treatment OF Ferrous OR Non-ferrous Metals OR ALLOYS; Making Metal Malleable, e.g. BY Decarburisation OR Tempering 3

Top 15 of 27 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

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

Santoku Corporation's lead technology class is C22C (Alloys), 56.3% of its portfolio - see every assignee active in that class. Explore C22C
Ranked #9,863 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Santoku Corporation against Raindance Technologies, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 37.8/100 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.