Where does SI EN Technology (XIAMEN) Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), SI EN Technology (XIAMEN) Limited ranks #23,393 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 SI EN Technology (XIAMEN) Limited hold?

SI EN Technology (XIAMEN) Limited holds 12 US utility patents granted between 2016 and 2023, spanning 9 technology areas.

What is SI EN Technology (XIAMEN) Limited's Innovation Score?

SI EN Technology (XIAMEN) Limited has an Innovation Score of 24.2 out of 100 (14th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is SI EN Technology (XIAMEN) Limited's patent grant rate increasing or decreasing?

SI EN Technology (XIAMEN) Limited's recent grant velocity is +0% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for SI EN Technology (XIAMEN) Limited's patents?

SI EN Technology (XIAMEN) Limited's patents average 6.3 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 SI EN Technology (XIAMEN) Limited 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

SI EN Technology (XIAMEN) Limited

Q: What technology areas does SI EN Technology (XIAMEN) Limited focus on?

SI EN Technology (XIAMEN) Limited's top technology area is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General) with 8 patents, ranking #399 of 2,247 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

USPTO PatentsView assignee record - 12 granted patents across 9 technology areas, recorded in grant years 2016–2023. 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: H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, SI ranks #23,393 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 9 technology areas.

#23,393
of 49,997 US assignees by volume: 14th percentile
by Innovation Score (24.2/100): 6.3
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R23393 · Foreign Corporation #23,393 · 12 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MICRO 12 grants
MID-PACK #23,393/49,997
PHOTO-FINISH Shihezi University
CPC-NARROW H05B · 9 areas
INNOV-THIN 24.2/100
CLAIMS-SPARSE 6.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Shihezi University (±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 SI’s 24.2 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 8.9 pts (37%) Velocity 1.0 pts (4%) Breadth 10.6 pts (44%) Claim depth 3.8 pts (16%)

Qualcomm Incorporated · highest

85
SI EN Technology… · this assignee

24
3D Lighting… · lowest

7

What this shows SI's Innovation Score is 24.2/100 (14th percentile 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 SI?

Each dot is one of SI’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). SI’s own 6.3 claims/patent is at or below the 14.9 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where SI's grants concentrate

SI EN Technology (XIAMEN) Limited is a focused PatentsView assignee: 9 CPC subclasses with 66.7% of grants classified under H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General). Peak complete grant year is 2021 (4 grants) versus a trough of 1 in 2016. By volume, SI sits between Shihezi University and Sillajen Biotherapeutics, Inc..

SI's three-year grant acceleration

SI EN Technology (XIAMEN) Limited shows 1 grants in 2022–2024 against only 7 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.

Shihezi University

12
Shimano (Singapor…

12
Shinda (Tangshan)…

12
Showa University

12
Side

12
Sidel Engineering…

12
Signalis

12
Sillajen Biothera…

12
SI EN Technology… ◀

12

What this shows SI holds 12 patents at rank #23,355, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near SI

By rank, the assignees closest to #23,355 in granted patent volume.

Leaders in H05B (Electric Heating)

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

SI's Innovation Score vs. every tracked assignee

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

24 14th percentile higher than 14% 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 · 2016–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

SI EN Technology (XIAMEN) Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	8.3%
2017	3	25.0%
2019	2	16.7%
2020	1	8.3%
2021	4	33.3%
2023	1	8.3%

Which technologies does SI EN Technology (XIAMEN) Limited patent most?

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 8

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 5

H03K - Pulse Technique 4

H02H - Emergency Protective Circuit Arrangements 2

H03F - Amplifiers 2

G06F - Electric Digital Data Processing 1

H03M - CODING; DECODING; Code Conversion IN General 1

B60Q - Arrangement OF Signalling OR Lighting Devices, THE Mounting OR Supporting Thereof OR Circuits Therefor, FOR Vehicles IN General 1

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 1

Top 9 of 9 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

SI EN Technology (XIAMEN) Limited's patent record in context - here's where to go next.

SI EN Technology (XIAMEN) Limited's lead technology class is H05B (Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General), 66.7% of its portfolio - see every assignee active in that class. Explore H05B
Ranked #23,393 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare SI EN Technology (XIAMEN) Limited against Shihezi University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.2/100 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.