Overall rank by patents
#2,833
Across all tracked assignees
USPTO PatentsView assignee record - 136 granted patents across 22 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01M (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY).
The verdict
Sion holds 136 US patents across 22 technology areas, rank #2,833 of 50,000 tracked assignees.
Sion Power Corporation has been granted 136 US utility patents between 2015 and 2025, placing Sion Power Corporation at rank #2,833 across all assignees tracked by PlainPatent. This portfolio spans 22 distinct Cooperative Patent Classification (CPC) subclasses, averaging 22.5 claims per patent with primary concentration in H01M (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY). As a US Corporation, Sion Power Corporation is one of the more focused assignees in the PatentsView dataset. By volume, Sion sits between Playnitride Display Co., Ltd. (136 patents, rank #2,829) and Forum US, Inc. (135 patents, rank #2,837) - the closest US assignees by grant volume. The composite Innovation Score of 54.6/100 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 80 grants, compared with 56 in the 2015–2019 window, a +43% shift in five-year velocity. Steady filing volume suggests sustained innovation without dramatic pivots. The US 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. Sion Power Corporation's 22.5 average claims per patent reflects complex, broadly scoped inventions that are difficult for competitors to design around, while a multi-domain presence across 22 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Sion Power Corporation against peers pursuing similar technology classes.
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
PlayNitride Display Co., Ltd.
136 patents
SHELL USA, INC.
136 patents
SK Chemicals CO., Ltd.
136 patents
SYRACUSE UNIVERSITY
136 patents
Taiho Pharmaceutical Co., Ltd.
136 patents
Sion Power Corporation
136 patents
Baylor University
135 patents
CHEMOCENTRYX, INC.
135 patents
FORUM US, INC.
135 patents
What this shows Sion holds 136 patents at rank #2,833, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
By rank, the assignees closest to #2,833 in granted patent volume.
Other assignees with the most granted patents in Sion's primary technology class.
Sion's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
55 Top 8% higher than 92% 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 2015–2019 baseline. Full figures in the table below.
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2015 | 12 | 8.8% |
| 2016 | 5 | 3.7% |
| 2017 | 16 | 11.8% |
| 2018 | 10 | 7.4% |
| 2019 | 13 | 9.6% |
| 2020 | 13 | 9.6% |
| 2021 | 14 | 10.3% |
| 2022 | 12 | 8.8% |
| 2023 | 19 | 14.0% |
| 2024 | 14 | 10.3% |
| 2025 | 8 | 5.9% |
Top 15 of 22 technology areas
Overall rank by patents
#2,833
Across all tracked assignees
54.6 out of 100
How to use this portfolio
Sion's 136 grants land it in the top 8% 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.