USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi Maxell, Ltd.

USPTO PatentsView assignee record - 237 granted patents across 55 technology areas, active 2015–2018. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION).

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

Explore the portfolio See the ranking

237

Total patents granted

CPC technology areas

8.7

Avg claims per patent

-100%

5-year filing velocity

The verdict

Hitachi holds 237 US patents across 55 technology areas, rank #1,723 of 50,000 tracked assignees.

#1,723
of 50,000 US assignees by volume: Top 15%
by Innovation Score (49.1/100): 8.7
avg claims per patent: -100%
filing velocity, last 5 yrs

Portfolio overview

Hitachi Maxell, Ltd. has been granted 237 US utility patents between 2015 and 2018, placing Hitachi Maxell, Ltd. at rank #1,723 across all assignees tracked by PlainPatent. This portfolio spans 55 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.7 claims per patent with primary concentration in H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION). As a Foreign Corporation, Hitachi Maxell, Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Hitachi sits between Stripe, Inc. (238 patents, rank #1,719) and University Of Louisville Research Foundation, Inc. (237 patents, rank #1,727) - the closest US assignees by grant volume. The composite Innovation Score of 49.1/100 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 0 grants, compared with 237 in the 2015–2019 window, a -100% 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. Hitachi Maxell, Ltd.'s 8.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 55 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hitachi Maxell, Ltd. against peers pursuing similar technology classes.

Stripe

238
Triple WIN Techno…

238
AVL LIST

237
Faraday & Future

237
Sicpa Holding

237
Sartorius Stedim…

237
Tsubakimoto Chain

237
University of Lou…

237
Hitachi Maxell ◀

237

What this shows Hitachi holds 237 patents at rank #1,723, 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 #1,723 in granted patent volume.

Leaders in H04N (Pictorial Communication)

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

Hitachi's Innovation Score vs. every tracked assignee

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

49 Top 15% higher than 85% 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 · 2015–2018

Grants by year

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

View data table

Hitachi Maxell, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	73	30.8%
2016	63	26.6%
2017	76	32.1%
2018	25	10.5%

Which technologies does Hitachi Maxell, Ltd. patent most?

H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION 143

G03B - APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 41

G06F - ELECTRIC DIGITAL DATA PROCESSING 37

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 31

G09G - ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 24

G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 21

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 18

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 18

H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 15

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 9

G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL 9

G02F - OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 8

G06V - IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING 7

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 7

G06Q - INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR 6

Top 15 of 55 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#1,723

Across all tracked assignees

Innovation Score

49.1 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 Hitachi Maxell, Ltd. hold?

Hitachi Maxell, Ltd. holds 237 US granted patents filed between 2015 and 2018, spanning 55 technology areas.

What is Hitachi Maxell, Ltd.'s Innovation Score?

Hitachi Maxell, Ltd. has an Innovation Score of 49.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hitachi Maxell, Ltd. focus on?

Hitachi Maxell, Ltd.'s top technology area is H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION) with 143 patents. The company has filed patents in 55 CPC subclasses total.

Is Hitachi Maxell, Ltd.'s patent filing rate increasing or decreasing?

Hitachi Maxell, Ltd.'s recent filing velocity is -100% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Hitachi Maxell, Ltd.'s patents?

Hitachi Maxell, Ltd.'s patents average 8.7 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Hitachi Maxell, 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.

How to use this portfolio

Hitachi's 237 grants land it in the top 15% 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 - Hitachi ranks #1,723 of 50,000. Top 50 holders
Most of this portfolio concentrates in H04N - see who else leads that technology area. H04N 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.