USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi-lg DATA Storage, Inc.

USPTO PatentsView assignee record - 109 granted patents across 23 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS).

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

Explore the portfolio See the ranking

109

Total patents granted

CPC technology areas

10.9

Avg claims per patent

-46%

5-year filing velocity

The verdict

Hitachi-lg holds 109 US patents across 23 technology areas, rank #3,397 of 50,000 tracked assignees.

#3,397
of 50,000 US assignees by volume: Top 27%
by Innovation Score (43.9/100): 10.9
avg claims per patent: -46%
filing velocity, last 5 yrs

Portfolio overview

Hitachi-lg DATA Storage, Inc. has been granted 109 US utility patents between 2015 and 2025, placing Hitachi-lg DATA Storage, Inc. at rank #3,397 across all assignees tracked by PlainPatent. This portfolio spans 23 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.9 claims per patent with primary concentration in G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS). As a Foreign Corporation, Hitachi-lg DATA Storage, Inc. is one of the more focused assignees in the PatentsView dataset. By volume, Hitachi-lg sits between Cybersonics, Inc. (109 patents, rank #3,393) and Mr. Bar-b-q Products Llc (109 patents, rank #3,401) - the closest US assignees by grant volume. The composite Innovation Score of 43.9/100 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 38 grants, compared with 71 in the 2015–2019 window, a -46% 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-lg DATA Storage, Inc.'s 10.9 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 23 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hitachi-lg DATA Storage, Inc. against peers pursuing similar technology classes.

Cybersonics

109
Decathlon

109
Elevance Renewabl…

109
Faurecia Interior…

109
I M A Industria M…

109
Ionq

109
Kerr Machine

109
Mr Bar-b-q Produc…

109
Hitachi-lg DATA S… ◀

109

What this shows Hitachi-lg holds 109 patents at rank #3,397, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hitachi-lg

By rank, the assignees closest to #3,397 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Hitachi-lg's Innovation Score vs. every tracked assignee

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

44 Top 27% higher than 73% 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

Hitachi-lg DATA Storage, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	19	17.4%
2016	22	20.2%
2017	10	9.2%
2018	11	10.1%
2019	9	8.3%
2020	10	9.2%
2021	8	7.3%
2022	6	5.5%
2023	8	7.3%
2024	3	2.8%
2025	3	2.8%

Which technologies does Hitachi-lg DATA Storage, Inc. patent most?

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 44

H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION 34

G11B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 29

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 15

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 14

G09G - ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 13

G01S - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES 12

G06F - ELECTRIC DIGITAL DATA PROCESSING 8

H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL 6

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 5

G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL 5

G03H - HOLOGRAPHIC PROCESSES OR APPARATUS 4

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 3

A61B - DIAGNOSIS; SURGERY; IDENTIFICATION 3

G11C - STATIC STORES 2

Top 15 of 23 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#3,397

Across all tracked assignees

Innovation Score

43.9 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-lg DATA Storage, Inc. hold?

Hitachi-lg DATA Storage, Inc. holds 109 US granted patents filed between 2015 and 2025, spanning 23 technology areas.

What is Hitachi-lg DATA Storage, Inc.'s Innovation Score?

Hitachi-lg DATA Storage, Inc. has an Innovation Score of 43.9 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-lg DATA Storage, Inc. focus on?

Hitachi-lg DATA Storage, Inc.'s top technology area is G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS) with 44 patents. The company has filed patents in 23 CPC subclasses total.

Is Hitachi-lg DATA Storage, Inc.'s patent filing rate increasing or decreasing?

Hitachi-lg DATA Storage, Inc.'s recent filing velocity is -46% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Hitachi-lg DATA Storage, Inc.'s patents?

Hitachi-lg DATA Storage, Inc.'s patents average 10.9 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Hitachi-lg DATA Storage, Inc. 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-lg's 109 grants land it in the top 27% 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-lg ranks #3,397 of 50,000. Top 50 holders
Most of this portfolio concentrates in G02B - see who else leads that technology area. G02B 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.