Where does Hitachi Chemical Company, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Chemical Company, Ltd. ranks #1,028 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 Hitachi Chemical Company, Ltd. hold?

Hitachi Chemical Company, Ltd. holds 425 US utility patents granted between 2015 and 2022, spanning 122 technology areas.

What is Hitachi Chemical Company, Ltd.'s Innovation Score?

Hitachi Chemical Company, Ltd. has an Innovation Score of 54.3 out of 100 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hitachi Chemical Company, Ltd. focus on?

Hitachi Chemical Company, Ltd.'s top technology area is H01L (Semiconductor Devices NOT Covered BY Class H10) with 120 patents, ranking #153 of 3,373 assignees active in that subclass. Grants appear in 122 CPC subclasses total.

Is Hitachi Chemical Company, Ltd.'s patent grant rate increasing or decreasing?

Hitachi Chemical Company, Ltd.'s recent grant velocity is -80% 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 Hitachi Chemical Company, Ltd.'s patents?

Hitachi Chemical Company, Ltd.'s patents average 13.9 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 Hitachi Chemical Company, 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

Hitachi Chemical Company, Ltd.

USPTO PatentsView assignee record - 425 granted patents across 122 technology areas, recorded in grant years 2015–2022. 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: H01L (Semiconductor Devices NOT Covered BY Class H10).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hitachi ranks #1,028 of 49,997 tracked US assignees by granted-patent volume, with 425 patents across 122 technology areas.

#1,028
of 49,997 US assignees by volume: Top 8%
by Innovation Score (54.3/100): 13.9
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1028 · Foreign Corporation #1,028 · 425 grants

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

GRANTS-MID 425 grants
TOP-DECILE #1,028/49,997
PHOTO-FINISH NOK
CPC-WIDE H01L · 122 areas
INNOV-PAR 54.3/100
CLAIMS-RICH 13.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: NOK Corporation (±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 Hitachi’s 54.3 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 20.9 pts (38%) Velocity 0.0 pts (0%) Breadth 25.0 pts (46%) Claim depth 8.4 pts (15%)

Qualcomm Incorporated · highest

85
Evernorth Strategic… · near

54
Hitachi Chemical · this assignee

54
Umicore · near

54
Vuzix · near

54
Wiwynn · near

54
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 54.3/100 (top 8% 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 Hitachi?

Each dot is one of Hitachi’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). Hitachi’s own 13.9 claims/patent is at or below the 18.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Hitachi's grant cadence moved

Between 2020–2024, Hitachi Chemical Company, Ltd. received 72 grants versus 353 in 2015–2019 (-80% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2019 at 75 grants and bottomed in 2022 at 1. Lead class H01L accounts for 28.2% of the portfolio across 122 subclasses. Volume neighbours: Interdigital VC Holdings, Inc. (#1,024) and SRI International (#1,032).

Hitachi's three-year grant acceleration

From 2019–2021 to 2022–2024, Hitachi Chemical Company, Ltd. moved from 146 to 1 grants (0.01x 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 #3,291. See the growth leaderboard.

Interdigital VC H…

427
PGS Geophysical AS

427
University OF Sou…

427
Gracenote

426
NOK

425
Zoom Video Commun…

425
Hitachi Chemical ◀

425
Iowa State Univer…

424
SRI International

424

What this shows Hitachi holds 425 patents at rank #1,028, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hitachi

By rank, the assignees closest to #1,028 in granted patent volume.

Leaders in H01L (Semiconductor Devices NOT Covered BY Class H10)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hitachi, neither rank-band nor same-CPC leaders (those blocks stay above). In H01L (Semiconductor Devices NOT Covered BY Class H10), Hitachi ranks #153 of 3,373 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (54 here).

Umicore 54 Wiwynn Corporation 54 Vuzix Corporation 54 Evernorth Strategic Development, Inc. 54

Similar claim depth

Nearest assignees by average claims per patent (13.9 here).

Johnson Electric S.A. 13.9 avg Hisense Electric Co., Ltd. 13.9 avg McLaren Automotive Limited 13.9 avg Galvani Bioelectronics Limited 13.9 avg

Hitachi's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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 · 2015–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Hitachi Chemical Company, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	70	16.5%
2016	73	17.2%
2017	65	15.3%
2018	70	16.5%
2019	75	17.6%
2020	69	16.2%
2021	2	0.5%
2022	1	0.2%

Which technologies does Hitachi Chemical Company, Ltd. patent most?

H01L - Semiconductor Devices NOT Covered BY Class H10 120

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 81

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 81

Y10T - Technical Subjects Covered BY Former US Classification 74

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 69

C08L - Compositions OF Macromolecular Compounds 66

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 56

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 52

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 49

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 43

G03F - Photomechanical Production OF Textured OR Patterned Surfaces, e.g. FOR Printing, FOR Processing OF Semiconductor DEVICES; Materials THEREFOR; Originals THEREFOR; Apparatus Specially Adapted THEREFOR; 41

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 40

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 40

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 38

C09G - Polishing Compositions ; SKI Waxes 35

Top 15 of 122 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

Hitachi Chemical Company, Ltd.'s patent record in context - here's where to go next.

Hitachi Chemical Company, Ltd.'s lead technology class is H01L (Semiconductor Devices NOT Covered BY Class H10), 28.2% of its portfolio - see every assignee active in that class. Explore H01L
Ranked #1,028 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Chemical Company, Ltd. against Interdigital VC Holdings, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 54.3/100 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.