Where does Sumitomo Riko Company Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Sumitomo Riko Company Limited ranks #1,301 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 Sumitomo Riko Company Limited hold?

Sumitomo Riko Company Limited holds 326 US utility patents granted 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 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant 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, ranking #5 of 892 assignees active in that subclass. Grants appear in 116 CPC subclasses total.

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

Sumitomo Riko Company Limited's recent grant velocity is -29% 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 Sumitomo Riko Company Limited's patents?

Sumitomo Riko Company Limited's patents average 9.9 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 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Sumitomo Riko Company Limited

USPTO PatentsView assignee record - 326 granted patents across 116 technology areas, recorded in grant years 2015–2025. 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: F16F (SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Sumitomo ranks #1,301 of 49,997 tracked US assignees by granted-patent volume, with 326 patents across 116 technology areas.

#1,301
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.6/100): 9.9
avg claims per patent: -29%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1301 · Foreign Corporation #1,301 · 326 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MID 326 grants
TOP-DECILE #1,301/49,997
PHOTO-FINISH Klemm + Sohn & KG
CPC-WIDE F16F · 116 areas
INNOV-PAR 55.6/100
CLAIMS-PAR 9.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -29% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Klemm + Sohn GMBH & Co. KG (±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 Sumitomo’s 55.6 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 20.0 pts (36%) Velocity 4.7 pts (8%) Breadth 25.0 pts (45%) Claim depth 6.0 pts (11%)

Qualcomm Incorporated · highest

85
Total Research &… · near

56
Alpha Networks · near

56
Guangzhou Luxvisions… · near

56
Sumitomo Riko · this assignee

56
Tactotek OY · near

56
3D Lighting… · lowest

7

What this shows Sumitomo's Innovation Score is 55.6/100 (top 7% 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 Sumitomo?

Each dot is one of Sumitomo’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). Sumitomo’s own 9.9 claims/patent is at or below the 14.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Sumitomo's grant cadence moved

Between 2020–2024, Sumitomo Riko Company Limited received 127 grants versus 178 in 2015–2019 (-29% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2016 at 46 grants and bottomed in 2022 at 19. Lead class F16F accounts for 39.9% of the portfolio across 116 subclasses. Volume neighbours: Klemm + Sohn GMBH & Co. KG (#1,297) and Sony Interactive Entertainment America LLC (#1,305).

Sumitomo's three-year grant acceleration

From 2019–2021 to 2022–2024, Sumitomo Riko Company Limited moved from 97 to 68 grants (0.70x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #2,147. See the growth leaderboard.

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.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Sumitomo, neither rank-band nor same-CPC leaders (those blocks stay above). In F16F (Springs), Sumitomo ranks #5 of 892 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (56 here).

Tactotek OY 56 Alpha Networks Inc. 56 Guangzhou Luxvisions Innovation Technology Limited 56 Total Research & Technology Feluy 56

Similar claim depth

Nearest assignees by average claims per patent (9.9 here).

LG Hausys, Ltd. 9.9 avg Council OF Scientific AND Industrial Research 9.9 avg Musashi Seimitsu Industry Co., Ltd. 9.9 avg Nippon Telegraph AND Telephone Corporation 9.9 avg

Sumitomo's Innovation Score vs. every tracked assignee

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

56 Top 7% higher than 93% 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 · 2015–2025

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%
2025partial year	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

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

Sumitomo Riko Company Limited's patent record in context - here's where to go next.

Sumitomo Riko Company Limited's lead technology class is F16F (SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration), 39.9% of its portfolio - see every assignee active in that class. Explore F16F
Ranked #1,301 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Sumitomo Riko Company Limited against Klemm + Sohn GMBH & Co. KG, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.6/100 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.