Where does Ishihara Chemical Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Ishihara Chemical Co., Ltd. ranks #21,296 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 Ishihara Chemical Co., Ltd. hold?

Ishihara Chemical Co., Ltd. holds 13 US utility patents granted between 2015 and 2025, spanning 12 technology areas.

What is Ishihara Chemical Co., Ltd.'s Innovation Score?

Ishihara Chemical Co., Ltd. has an Innovation Score of 33.2 out of 100 (top 56% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Ishihara Chemical Co., Ltd.'s patent grant rate increasing or decreasing?

Ishihara Chemical Co., Ltd.'s recent grant velocity is -50% 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 Ishihara Chemical Co., Ltd.'s patents?

Ishihara Chemical Co., Ltd.'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 Ishihara Chemical 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Ishihara Chemical Co., Ltd.

Q: What technology areas does Ishihara Chemical Co., Ltd. focus on?

Ishihara Chemical Co., Ltd.'s top technology area is H05K (PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS) with 7 patents. Grants appear in 12 CPC subclasses total.

USPTO PatentsView assignee record - 13 granted patents across 12 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: H05K (PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Ishihara ranks #21,296 of 50,000 tracked US assignees by granted-patent volume, with 13 patents across 12 technology areas.

#21,296
of 50,000 US assignees by volume: Top 56%
by Innovation Score (33.2/100): 8.6
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21296 · Foreign Corporation #21,296 · 13 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 13 grants
MID-PACK #21,296/50,000
PHOTO-FINISH INTWINE CONNECT
CPC-FOCUS H05K · 12 areas
INNOV-THIN 33.2/100
CLAIMS-PAR 8.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Intwine Connect, 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
Ishihara Chemical · this assignee

33
3D Lighting Innovati… · lowest

7

What this shows Ishihara's Innovation Score is 33.2/100 (top 56% 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.

Where Ishihara's grants concentrate

Ishihara Chemical Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 53.8% of grants classified under H05K (PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS). Peak complete grant year is 2024 (3 grants) versus a trough of 1 in 2021. By volume, Ishihara sits between Intwine Connect, Llc and Izumi-cosmo Co., Ltd..

Intwine Connect

13
Invanti(Beijing)T…

13
Ipevo

13
Iriver

13
Isteq Group Holdi…

13
Italdesign Giugia…

13
Iwaki

13
Izumi-cosmo

13
Ishihara Chemical ◀

13

What this shows Ishihara holds 13 patents at rank #21,274, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Ishihara

By rank, the assignees closest to #21,274 in granted patent volume.

Leaders in H05K (Printed Circuits)

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

Ishihara's Innovation Score vs. every tracked assignee

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

33 Top 56% higher than 44% 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

Ishihara Chemical Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	15.4%
2017	2	15.4%
2018	2	15.4%
2019	2	15.4%
2021	1	7.7%
2024	3	23.1%
2025partial year	1	7.7%

Which technologies does Ishihara Chemical Co., Ltd. patent most?

H05K - PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 7

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 7

C25D - PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR 5

H01B - CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES 4

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 4

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 3

B22F - WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER ; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER 3

C22C - ALLOYS 3

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 2

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 2

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 2

H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 1

Top 12 of 12 technology areas

Where it ranks

Overall rank by patents

#21,296

of 50,000 tracked assignees

Innovation Score

33.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.