PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Maxell, Ltd.

USPTO PatentsView assignee record - 914 granted patents across 109 technology areas, active 2018–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION).

Explore the portfolio See the ranking
914
Total patents granted
109
CPC technology areas
11.8
Avg claims per patent
+364%
5-year filing velocity

The verdict

Maxell holds 914 US patents across 109 technology areas, rank #486 of 50,000 tracked assignees.

#486
of 50,000 US assignees by volume
Top 2%
by Innovation Score (63.6/100)
11.8
avg claims per patent
+364%
filing velocity, last 5 yrs

Portfolio overview

Maxell, Ltd. has been granted 914 US utility patents between 2018 and 2025, placing Maxell, Ltd. at rank #486 across all assignees tracked by PlainPatent. This portfolio spans 109 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.8 claims per patent with primary concentration in H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION). As a Foreign Corporation, Maxell, Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Maxell sits between THE University OF Tokyo (920 patents, rank #482) and Silicon Motion, Inc. (910 patents, rank #490) - the closest US assignees by grant volume. The composite Innovation Score of 63.6/100 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 752 grants, compared with 162 in the 2015–2019 window, a +364% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. Maxell, Ltd.'s 11.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a diversified footprint across 100+ CPC subclasses spreads risk across many technology fronts. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Maxell, Ltd. against peers pursuing similar technology classes.

Who files at Maxell's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Maxell holds 914 patents at rank #486, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Maxell

By rank, the assignees closest to #486 in granted patent volume.

Leaders in H04N (Pictorial Communication)

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

Maxell's Innovation Score vs. every tracked assignee

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

64 Top 2% higher than 98% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). Below this entry. 50–60: 5,058 US assignees (10%). Below this entry. 60–70: 1,537 US assignees (3%). This entry sits in this band. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

050100150200 20182019202020212022202320242025 121
USPTO utility patent grants by year · 2018–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table
Maxell, Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2018 41 4.5%
2019 121 13.2%
2020 116 12.7%
2021 105 11.5%
2022 128 14.0%
2023 136 14.9%
2024 146 16.0%
2025 121 13.2%

Which technologies does Maxell, Ltd. patent most?

Top 15 of 109 technology areas

Patent Moat Analysis

Portfolio Volume Moderate
Tech Breadth Diversified
Claim Depth Simple
Velocity Accelerating

Where it ranks

Overall rank by patents

#486

Across all tracked assignees

Innovation Score

63.6 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 Maxell, Ltd. hold?
Maxell, Ltd. holds 914 US granted patents filed between 2018 and 2025, spanning 109 technology areas.
What is Maxell, Ltd.'s Innovation Score?
Maxell, Ltd. has an Innovation Score of 63.6 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Maxell, Ltd. focus on?
Maxell, Ltd.'s top technology area is H04N (PICTORIAL COMMUNICATION, e.g. TELEVISION) with 493 patents. The company has filed patents in 109 CPC subclasses total.
Is Maxell, Ltd.'s patent filing rate increasing or decreasing?
Maxell, Ltd.'s recent filing velocity is +364% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Maxell, Ltd.'s patents?
Maxell, Ltd.'s patents average 11.8 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the 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

Maxell's 914 grants land it in the top 2% 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 - Maxell ranks #486 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

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.