Where does Hunan San'an Semiconductor Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hunan San'an Semiconductor Co., Ltd. ranks #40,780 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 Hunan San'an Semiconductor Co., Ltd. hold?

Hunan San'an Semiconductor Co., Ltd. holds 6 US utility patents granted between 2022 and 2025, spanning 4 technology areas.

What is Hunan San'an Semiconductor Co., Ltd.'s Innovation Score?

Hunan San'an Semiconductor Co., Ltd. has an Innovation Score of 43.2 out of 100 (top 29% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hunan San'an Semiconductor Co., Ltd. focus on?

Hunan San'an Semiconductor Co., Ltd.'s top technology area is H10D (Inorganic Electric Semiconductor Devices) with 5 patents, ranking #601 of 1,402 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Is Hunan San'an Semiconductor Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Hunan San'an Semiconductor Co., Ltd..

What does claim depth mean for Hunan San'an Semiconductor Co., Ltd.'s patents?

Hunan San'an Semiconductor Co., Ltd.'s patents average 15.7 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 Hunan San'an Semiconductor Co., 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hunan San'an Semiconductor Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 4 technology areas, recorded in grant years 2022–2025. 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: H10D (Inorganic Electric Semiconductor Devices).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hunan ranks #40,780 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 4 technology areas.

#40,780
of 49,997 US assignees by volume: Top 29%
by Innovation Score (43.2/100): 15.7
avg claims per patent

USPTO PatentsView assignee plate

Corpus R40780 · Foreign Corporation #40,780 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #40,780/49,997
PHOTO-FINISH Huizhou Hanxu…
CPC-NARROW H10D · 4 areas
INNOV-PAR 43.2/100
CLAIMS-RICH 15.7 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2025 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Huizhou Hanxu Hardware & Plastic Technology Co., Ltd. (±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.

How Hunan’s 43.2 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 6.7 pts (16%) Velocity 20.0 pts (46%) Breadth 7.1 pts (16%) Claim depth 9.4 pts (22%)

Qualcomm Incorporated · highest

85
Hunan San'an… · this assignee

43
3D Lighting… · lowest

7

What this shows Hunan's Innovation Score is 43.2/100 (top 29% 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.

Does more volume mean deeper claims for Hunan?

Each dot is one of Hunan’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Hunan’s own 15.7 claims/patent is ABOVE the 7.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Hunan vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Hunan's grants concentrate

Hunan San'an Semiconductor Co., Ltd. is a focused PatentsView assignee: 4 CPC subclasses with 83.3% of grants classified under H10D (Inorganic Electric Semiconductor Devices). Peak complete grant year is 2024 (3 grants) versus a trough of 2 in 2022. By volume, Hunan sits between Huizhou Hanxu Hardware & Plastic Technology Co., Ltd. and Huttenes-albertus Chemische Werke Gesellschaft mit beschränkter haftung.

Hunan's three-year grant acceleration

Hunan San'an Semiconductor Co., Ltd. shows 5 grants in 2022–2024 against only 0 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Huizhou Hanxu Har…

6
Huizhou Victory T…

6
Hulico

6
Human Metabolome

6
Hunteck Semicondu…

6
Huntsman P&A UK

6
Hushan Autoparts

6
Huttenes-albertus…

6
Hunan San'an Semi… ◀

6

What this shows Hunan holds 6 patents at rank #40,678, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hunan

By rank, the assignees closest to #40,678 in granted patent volume.

Leaders in H10D (Inorganic Electric Semiconductor Devices)

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

Hunan's Innovation Score vs. every tracked assignee

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

43 Top 29% higher than 71% 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 · 2022–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Hunan San'an Semiconductor Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	2	33.3%
2024	3	50.0%
2025partial year	1	16.7%

Which technologies does Hunan San'an Semiconductor Co., Ltd. patent most?

H10D - Inorganic Electric Semiconductor Devices 5

H01L - Semiconductor Devices NOT Covered BY Class H10 2

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 1

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 1

Top 4 of 4 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Hunan San'an Semiconductor Co., Ltd.'s patent record in context - here's where to go next.

Hunan San'an Semiconductor Co., Ltd.'s lead technology class is H10D (Inorganic Electric Semiconductor Devices), 83.3% of its portfolio - see every assignee active in that class. Explore H10D
Ranked #40,780 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hunan San'an Semiconductor Co., Ltd. against Huizhou Hanxu Hardware & Plastic Technology Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.2/100 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.