Where does Riso Kagaku Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Riso Kagaku Corporation ranks #1,217 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 Riso Kagaku Corporation hold?

Riso Kagaku Corporation holds 350 US utility patents granted between 2015 and 2025, spanning 65 technology areas.

What is Riso Kagaku Corporation's Innovation Score?

Riso Kagaku Corporation has an Innovation Score of 52.6 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 Riso Kagaku Corporation's patent grant rate increasing or decreasing?

Riso Kagaku Corporation's recent grant velocity is -60% 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 Riso Kagaku Corporation's patents?

Riso Kagaku Corporation's patents average 7.8 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 Riso Kagaku 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

Riso Kagaku Corporation

Q: What technology areas does Riso Kagaku Corporation focus on?

Riso Kagaku Corporation's top technology area is B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors) with 176 patents. Grants appear in 65 CPC subclasses total.

USPTO PatentsView assignee record - 350 granted patents across 65 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: B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Riso ranks #1,217 of 49,997 tracked US assignees by granted-patent volume, with 350 patents across 65 technology areas.

#1,217
of 49,997 US assignees by volume: Top 10%
by Innovation Score (52.6/100): 7.8
avg claims per patent: -60%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1217 · Foreign Corporation #1,217 · 350 grants

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

GRANTS-MID 350 grants
TOP-DECILE #1,217/49,997
PHOTO-FINISH Gamblit Gaming
CPC-WIDE B41J · 65 areas
INNOV-PAR 52.6/100
CLAIMS-SPARSE 7.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -60% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Gamblit Gaming, LLC (±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.

Qualcomm Incorporated · highest

85
CMR Surgical · near

53
DMG Mori · near

53
FIH (HONG KONG) · near

53
Infineon Dresden & KG · near

53
Riso Kagaku · this assignee

53
3D Lighting… · lowest

7

What this shows Riso's Innovation Score is 52.6/100 (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.

How Riso's grant cadence moved

Between 2020–2024, Riso Kagaku Corporation received 96 grants versus 243 in 2015–2019 (-60% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2015 at 62 grants and bottomed in 2023 at 9. Lead class B41J accounts for 50.3% of the portfolio across 65 subclasses. Volume neighbours: Gamblit Gaming, LLC (#1,213) and Razer (Asia-Pacific) Pte. Ltd. (#1,221).

Riso's three-year grant acceleration

From 2019–2021 to 2022–2024, Riso Kagaku Corporation moved from 89 to 36 grants (0.40x 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 #2,871. See the growth leaderboard.

Gamblit Gaming

350
Ii-vi Delaware

350
Jeol

350
JX Nippon Mining…

350
Riso Kagaku ◀

350
Amdocs Development

349
Deutsche Telekom

349
Emerson Electric

349
Razer (Asia-pacif…

349

What this shows Riso holds 350 patents at rank #1,217, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Riso

By rank, the assignees closest to #1,217 in granted patent volume.

Leaders in B41J (Typewriters)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Riso, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (53 here).

DMG Mori Co., Ltd. 53 Infineon Technologies Dresden GmbH & Co. KG 53 CMR Surgical Limited 53 FIH (HONG KONG) Limited 53

Similar claim depth

Nearest assignees by average claims per patent (7.8 here).

Jeld-wen, Inc. 7.8 avg Sodick Co., Ltd. 7.8 avg THE Catholic University OF Korea Industry-academic Cooperation Foundation 7.8 avg Ablic Inc. 7.8 avg

Riso's Innovation Score vs. every tracked assignee

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

53 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 · 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

Riso Kagaku Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	62	17.7%
2016	52	14.9%
2017	56	16.0%
2018	44	12.6%
2019	29	8.3%
2020	26	7.4%
2021	34	9.7%
2022	15	4.3%
2023	9	2.6%
2024	12	3.4%
2025partial year	11	3.1%

Which technologies does Riso Kagaku Corporation patent most?

B41J - TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors 176

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 78

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 60

H04N - Pictorial Communication, e.g. Television 40

G06F - Electric Digital Data Processing 37

G03G - ELECTROGRAPHY; ELECTROPHOTOGRAPHY; Magnetography 34

G06K - Graphical Data Reading ; Presentation OF DATA; Record CARRIERS; Handling Record Carriers 30

B41M - Printing, Duplicating, Marking, OR Copying PROCESSES; Colour Printing, 18

B43M - Bureau Accessories NOT Otherwise Provided FOR 11

D06P - Dyeing OR Printing TEXTILES; Dyeing Leather, Furs OR Solid Macromolecular Substances IN ANY Form 11

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 10

G06T - Image Data Processing OR Generation, IN General 6

B42C - Bookbinding 6

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 5

B41F - Printing Machines OR Presses 5

Top 15 of 65 technology areas

Where it ranks

Overall rank by patents

#1,217

of 49,997 tracked assignees

Innovation Score

52.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

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

Riso Kagaku Corporation's lead technology class is B41J (TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors), 50.3% of its portfolio - see every assignee active in that class. Explore B41J
Ranked #1,217 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Riso Kagaku Corporation against Gamblit Gaming, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.6/100 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.