Where does Hitachi High-tech Science Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi High-tech Science Corporation ranks #1,912 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 High-tech Science Corporation hold?

Hitachi High-tech Science Corporation holds 210 US utility patents granted between 2015 and 2025, spanning 30 technology areas.

What is Hitachi High-tech Science Corporation's Innovation Score?

Hitachi High-tech Science Corporation has an Innovation Score of 47.1 out of 100 (top 19% 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 High-tech Science Corporation focus on?

Hitachi High-tech Science Corporation's top technology area is H01J (Electric Discharge Tubes OR Discharge Lamps) with 121 patents. Grants appear in 30 CPC subclasses total.

Is Hitachi High-tech Science Corporation's patent grant rate increasing or decreasing?

Hitachi High-tech Science Corporation's recent grant velocity is -24% 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 High-tech Science Corporation's patents?

Hitachi High-tech Science Corporation's patents average 8.4 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 High-tech Science Corporation 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 High-tech Science Corporation

USPTO PatentsView assignee record - 210 granted patents across 30 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: H01J (Electric Discharge Tubes OR Discharge Lamps).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hitachi ranks #1,912 of 49,997 tracked US assignees by granted-patent volume, with 210 patents across 30 technology areas.

#1,912
of 49,997 US assignees by volume: Top 19%
by Innovation Score (47.1/100): 8.4
avg claims per patent: -24%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1912 · Foreign Corporation #1,912 · 210 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MID 210 grants
TOP-DECILE #1,912/49,997
PHOTO-FINISH Baylor College of…
CPC-FOCUS H01J · 30 areas
INNOV-PAR 47.1/100
CLAIMS-PAR 8.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -24% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Baylor College of Medicine (±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
Omron Automotive · near

47
Sunshine Lake Pharma · near

47
Ecovacs Robotics · near

47
Heraeus Precious… · near

47
Hitachi High-tech… · this assignee

47
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 47.1/100 (top 19% 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 Hitachi's grants concentrate

Hitachi High-tech Science Corporation is a focused PatentsView assignee: 30 CPC subclasses with 57.6% of grants classified under H01J (Electric Discharge Tubes OR Discharge Lamps). Peak complete grant year is 2017 (34 grants) versus a trough of 7 in 2024. By volume, Hitachi sits between Benteler Automobiltechnik GMBH and OpenTV, Inc..

Hitachi's three-year grant acceleration

From 2019–2021 to 2022–2024, Hitachi High-tech Science Corporation moved from 66 to 41 grants (0.62x 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 #2,386. See the growth leaderboard.

Benteler Automobi…

210
Baylor College of…

210
CPS Technology Ho…

210
Dow Corning

210
Hitachi Energy

210
National Universi…

210
Okamura

210
Opentv

210
Hitachi High-tech… ◀

210

What this shows Hitachi holds 210 patents at rank #1,911, 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 #1,911 in granted patent volume.

Leaders in H01J (Electric Discharge Tubes OR Discharge Lamps)

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).

Similar innovation score

Nearest assignees by Innovation Score (47 here).

Ecovacs Robotics Co., Ltd. 47 Heraeus Precious Metals GMBH & Co. KG 47 Omron Automotive Electronics Co., Ltd. 47 Sunshine Lake Pharma Co., Ltd. 47

Similar claim depth

Nearest assignees by average claims per patent (8.4 here).

Maxlite, Inc 8.5 avg Adey Holdings (2008) Limited 8.4 avg Paccar Inc 8.5 avg Doosan Infracore Co., Ltd. 8.4 avg

Hitachi's Innovation Score vs. every tracked assignee

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

47 Top 19% higher than 81% 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 · 2015–2025

Grants by year

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

View data table

Hitachi High-tech Science Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	17	8.1%
2016	27	12.9%
2017	34	16.2%
2018	24	11.4%
2019	17	8.1%
2020	30	14.3%
2021	19	9.0%
2022	20	9.5%
2023	14	6.7%
2024	7	3.3%
2025partial year	1	0.5%

Which technologies does Hitachi High-tech Science Corporation patent most?

H01J - Electric Discharge Tubes OR Discharge Lamps 121

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 104

G01Q - Scanning-probe Techniques OR APPARATUS; Applications OF Scanning-probe Techniques, e.g. Scanning Probe Microscopy [SPM] 16

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 12

G01T - Measurement OF Nuclear OR X-radiation 7

H05H - Plasma Technique ; Production OF Accelerated Electrically-charged Particles OR OF NEUTRONS; Production OR Acceleration OF Neutral Molecular OR Atomic Beams 5

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 4

G21K - Techniques FOR Handling Particles OR Ionising Radiation NOT Otherwise Provided FOR; Irradiation DEVICES; Gamma RAY OR X-ray Microscopes 4

G06F - Electric Digital Data Processing 4

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 3

G02B - Optical Elements, Systems OR Apparatus 3

B01L - Chemical OR Physical Laboratory Apparatus FOR General USE 3

H04N - Pictorial Communication, e.g. Television 3

G06T - Image Data Processing OR Generation, IN General 3

H01L - Semiconductor Devices NOT Covered BY Class H10 2

Top 15 of 30 technology areas

Where it ranks

Overall rank by patents

#1,912

of 49,997 tracked assignees

Innovation Score

47.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Hitachi High-tech Science Corporation's patent record in context - here's where to go next.

Hitachi High-tech Science Corporation's lead technology class is H01J (Electric Discharge Tubes OR Discharge Lamps), 57.6% of its portfolio - see every assignee active in that class. Explore H01J
Ranked #1,912 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi High-tech Science Corporation against Benteler Automobiltechnik GMBH, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 47.1/100 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.