USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Riko Company Limited

USPTO PatentsView assignee record - 326 granted patents across 116 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F16F (SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

326

Total patents granted

116

CPC technology areas

9.9

Avg claims per patent

-17%

5-year filing velocity

The verdict

Sumitomo holds 326 US patents across 116 technology areas, rank #1,301 of 50,000 tracked assignees.

#1,301
of 50,000 US assignees by volume: Top 7%
by Innovation Score (55.6/100): 9.9
avg claims per patent: -17%
filing velocity, last 5 yrs

Portfolio overview

Sumitomo Riko Company Limited has been granted 326 US utility patents between 2015 and 2025, placing Sumitomo Riko Company Limited at rank #1,301 across all assignees tracked by PlainPatent. This portfolio spans 116 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.9 claims per patent with primary concentration in F16F (SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION). As a Foreign Corporation, Sumitomo Riko Company Limited is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Sumitomo sits between Klemm + SOHN Gmbh & Co. KG (326 patents, rank #1,297) and Sony Interactive Entertainment America Llc (325 patents, rank #1,305) - the closest US assignees by grant volume. The composite Innovation Score of 55.6/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 148 grants, compared with 178 in the 2015–2019 window, a -17% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Sumitomo Riko Company Limited's 9.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sumitomo Riko Company Limited against peers pursuing similar technology classes.

Klemm + SOHN & KG

326
Littelfuse

326
Ningde Amperex Te…

326
SICK

326
University OF Con…

326
Sumitomo Riko ◀

326
Chugai Seiyaku

325
Continental Reife…

325
Sony Interactive…

325

What this shows Sumitomo holds 326 patents at rank #1,301, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Sumitomo

By rank, the assignees closest to #1,301 in granted patent volume.

Leaders in F16F (Springs)

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

Sumitomo's Innovation Score vs. every tracked assignee

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

56 Top 7% higher than 93% 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 · 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

Sumitomo Riko Company Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	26	8.0%
2016	46	14.1%
2017	33	10.1%
2018	35	10.7%
2019	38	11.7%
2020	33	10.1%
2021	26	8.0%
2022	19	5.8%
2023	19	5.8%
2024	30	9.2%
2025	21	6.4%

Which technologies does Sumitomo Riko Company Limited patent most?

F16F - SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION 130

B60K - ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY 55

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 37

G03G - ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY 37

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 34

F16L - PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL 29

B60G - VEHICLE SUSPENSION ARRANGEMENTS 25

B29C - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 25

F16C - SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 25

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 21

H10N - ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR 20

B60R - VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR 18

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 17

C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 16

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 15

Top 15 of 116 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Diversified

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#1,301

Across all tracked assignees

Innovation Score

55.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Sumitomo Riko Company Limited hold?

Sumitomo Riko Company Limited holds 326 US granted patents filed between 2015 and 2025, spanning 116 technology areas.

What is Sumitomo Riko Company Limited's Innovation Score?

Sumitomo Riko Company Limited has an Innovation Score of 55.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Sumitomo Riko Company Limited focus on?

Sumitomo Riko Company Limited's top technology area is F16F (SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION) with 130 patents. The company has filed patents in 116 CPC subclasses total.

Is Sumitomo Riko Company Limited's patent filing rate increasing or decreasing?

Sumitomo Riko Company Limited's recent filing velocity is -17% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Sumitomo Riko Company Limited's patents?

Sumitomo Riko Company Limited's patents average 9.9 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Sumitomo Riko Company Limited 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

Sumitomo's 326 grants land it in the top 7% 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 - Sumitomo ranks #1,301 of 50,000. Top 50 holders
Most of this portfolio concentrates in F16F - see who else leads that technology area. F16F 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 Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.