USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Tatsumi Ryoki Co., Ltd

USPTO PatentsView assignee record - 26 granted patents across 35 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: G01R (MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES).

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

9.4

Avg claims per patent

+200%

5-year grant velocity

The verdict

According to USPTO PatentsView, Tatsumi ranks #11,826 of 50,000 tracked US assignees by granted-patent volume, with 26 patents across 35 technology areas.

#11,826
of 50,000 US assignees by volume: Top 10%
by Innovation Score (52.4/100): 9.4
avg claims per patent: +200%
grant velocity, last 5 yrs

Portfolio overview

Tatsumi Ryoki Co., Ltd has been granted 26 US utility patents between 2016 and 2025, placing Tatsumi Ryoki Co., Ltd at #11,826 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 35 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.4 claims per patent with primary concentration in G01R (MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES). As a Foreign Corporation, Tatsumi Ryoki Co., Ltd is one of the more focused assignees in the PatentsView dataset. By volume, Tatsumi sits between Spinecore, Inc. (26 patents, rank #11,820) and THE Arizona Board OF Regents (26 patents, rank #11,828) - the closest US assignees by grant volume. The composite Innovation Score of 52.4/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 18 grants, compared with 6 in the 2015–2019 window, a +200% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Tatsumi Ryoki Co., Ltd's 9.4 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 35 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Spinecore

26
Sprick Bielefelde…

26
Synthes

26
Tamkang University

26
Teletech Holdings

26
Termax

26
THE Antenna Inter…

26
THE Arizona Board…

26
Tatsumi Ryoki ◀

26

What this shows Tatsumi holds 26 patents at rank #11,824, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tatsumi

By rank, the assignees closest to #11,824 in granted patent volume.

Leaders in G01R (Measuring Electric Variables)

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

Tatsumi'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 50,000 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

Tatsumi Ryoki Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	3	11.5%
2018	2	7.7%
2019	1	3.8%
2020	4	15.4%
2021	1	3.8%
2022	1	3.8%
2023	6	23.1%
2024	6	23.1%
2025partial year	2	7.7%

Which technologies does Tatsumi Ryoki Co., Ltd patent most?

G01R - MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 18

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 8

H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 7

H01C - RESISTORS 5

Y04S - SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS 4

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 3

B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES ; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES ; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL ; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICL 3

B60F - VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES 2

B64C - AEROPLANES; HELICOPTERS 2

C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR 2

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 2

H02S - GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES 2

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 2

H01H - ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 1

H02K - DYNAMO-ELECTRIC MACHINES 1

Top 15 of 35 technology areas

Grant record at a glance

Portfolio Volume 26 grants

CPC subclasses 35

Avg. claims / grant 9.4

Velocity +200%

Historical grant data only; it does not rate legal strength or current strategy.

Where it ranks

Overall rank by patents

#11,826

of 50,000 tracked assignees

Innovation Score

52.4 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

Where does Tatsumi Ryoki Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tatsumi Ryoki Co., Ltd ranks #11,826 of 50,000 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Tatsumi Ryoki Co., Ltd hold?

Tatsumi Ryoki Co., Ltd holds 26 US utility patents granted between 2016 and 2025, spanning 35 technology areas.

What is Tatsumi Ryoki Co., Ltd's Innovation Score?

Tatsumi Ryoki Co., Ltd has an Innovation Score of 52.4 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%).

What technology areas does Tatsumi Ryoki Co., Ltd focus on?

Tatsumi Ryoki Co., Ltd's top technology area is G01R (MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES) with 18 patents. Grants appear in 35 CPC subclasses total.

Is Tatsumi Ryoki Co., Ltd's patent grant rate increasing or decreasing?

Tatsumi Ryoki Co., Ltd's recent grant velocity is +200% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Tatsumi Ryoki Co., Ltd's patents?

Tatsumi Ryoki Co., Ltd's patents average 9.4 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 Tatsumi Ryoki 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.

How to use this portfolio

Tatsumi's 26 grants land it in the top 10% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Tatsumi ranks #11,826 of 50,000. Top 50 holders
Most of this portfolio concentrates in G01R - see who else leads that technology area. G01R leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

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.