Overall rank by patents
#28,944
Across all tracked assignees
USPTO PatentsView assignee record - 9 granted patents across 14 technology areas, active 2022–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B61L (GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC).
The verdict
Hitachi holds 9 US patents across 14 technology areas, rank #28,944 of 50,000 tracked assignees.
Hitachi RAIL STS S.p.a. has been granted 9 US utility patents between 2022 and 2025, placing Hitachi RAIL STS S.p.a. at rank #28,944 across all assignees tracked by PlainPatent. This portfolio spans 14 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.3 claims per patent with primary concentration in B61L (GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC). As a Foreign Corporation, Hitachi RAIL STS S.p.a. is one of the more focused assignees in the PatentsView dataset. By volume, Hitachi sits between Hisep Technology Ltd. (9 patents, rank #28,940) and HONG International Corporation (9 patents, rank #28,948) - the closest US assignees by grant volume. The composite Innovation Score of 48.0/100 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. Historical data spans 2022 through 2025, with 9 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. 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 RAIL STS S.p.a.'s 11.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 14 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hitachi RAIL STS S.p.a. against peers pursuing similar technology classes.
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
HISEP TECHNOLOGY LTD.
9 patents
HISTOLOGICS LLC
9 patents
HITACHI AUTOMOTIVE SYSTEMS KYUSHU, LTD.
9 patents
HITACHI CHEMICAL CO. AMERICA, LTD.
9 patents
HK MARKETING LC
9 patents
HMS MFG CO.
9 patents
HOBOT TECHNOLOGY INC.
9 patents
HONG INTERNATIONAL CORPORATION
9 patents
HITACHI RAIL STS S.P.A.
9 patents
What this shows Hitachi holds 9 patents at rank #28,944, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
By rank, the assignees closest to #28,944 in granted patent volume.
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)
48 Top 17% higher than 83% 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
Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2022 | 2 | 22.2% |
| 2023 | 3 | 33.3% |
| 2024 | 2 | 22.2% |
| 2025 | 2 | 22.2% |
Top 14 of 14 technology areas
Overall rank by patents
#28,944
Across all tracked assignees
48.0 out of 100
How to use this portfolio
Hitachi's 9 grants land it in the top 17% by Innovation Score, but volume alone doesn't tell you where the strength sits.
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.
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.