USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Xi'an Eswin Silicon Wafer Technology Co., Ltd.

USPTO PatentsView assignee record - 8 granted patents across 12 technology areas, active 2023–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: 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 POLYCRYS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

11.1

Avg claims per patent

5-year filing velocity

The verdict

Xi'an holds 8 US patents across 12 technology areas, rank #33,914 of 50,000 tracked assignees.

#33,914
of 50,000 US assignees by volume: Top 21%
by Innovation Score (46.5/100): 11.1
avg claims per patent

Portfolio overview

Xi'an Eswin Silicon Wafer Technology Co., Ltd. has been granted 8 US utility patents between 2023 and 2025, placing Xi'an Eswin Silicon Wafer Technology Co., Ltd. at rank #33,914 across all assignees tracked by PlainPatent. This portfolio spans 12 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.1 claims per patent with primary concentration in 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 POLYCRYS). As a Foreign Corporation, Xi'an Eswin Silicon Wafer Technology Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Xi'an sits between X-technology Swiss Gmbh (8 patents, rank #33,910) and XJ Electric Co., Ltd (8 patents, rank #33,918) - the closest US assignees by grant volume. The composite Innovation Score of 46.5/100 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 2023 through 2025, with 8 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. Xi'an Eswin Silicon Wafer Technology Co., Ltd.'s 11.1 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 12 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Xi'an Eswin Silicon Wafer Technology Co., Ltd. against peers pursuing similar technology classes.

X-technology Swiss

8
XEMC Darwind B V

8
Xenter

8
Xepic

8
Xiamen Pharmaceut…

8
Xiamen MAKE Secur…

8
Xiamen UX High-sp…

8
XJ Electric

8
Xi'an Eswin Silic… ◀

8

What this shows Xi'an holds 8 patents at rank #33,914, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Xi'an

By rank, the assignees closest to #33,914 in granted patent volume.

Leaders in C30B (Single-crystal Growth)

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

Xi'an's Innovation Score vs. every tracked assignee

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

47 Top 21% higher than 79% 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

USPTO utility patent grants by year · 2023–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2023–2019 baseline. Full figures in the table below.

View data table

Xi'an Eswin Silicon Wafer Technology Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	2	25.0%
2024	4	50.0%
2025	2	25.0%

Which technologies does Xi'an Eswin Silicon Wafer Technology Co., Ltd. patent most?

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 5

B24B - MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING ; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS 2

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 1

F26B - DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM 1

G01F - MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME 1

B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES 1

B29C - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1

B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS 1

B24D - TOOLS FOR GRINDING, BUFFING OR SHARPENING 1

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 1

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 1

G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS 1

Top 12 of 12 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Where it ranks

Overall rank by patents

#33,914

Across all tracked assignees

Innovation Score

46.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Xi'an Eswin Silicon Wafer Technology Co., Ltd. hold?

Xi'an Eswin Silicon Wafer Technology Co., Ltd. holds 8 US granted patents filed between 2023 and 2025, spanning 12 technology areas.

What is Xi'an Eswin Silicon Wafer Technology Co., Ltd.'s Innovation Score?

Xi'an Eswin Silicon Wafer Technology Co., Ltd. has an Innovation Score of 46.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Xi'an Eswin Silicon Wafer Technology Co., Ltd. focus on?

Xi'an Eswin Silicon Wafer Technology Co., Ltd.'s top technology area is 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) with 5 patents. The company has filed patents in 12 CPC subclasses total.

Is Xi'an Eswin Silicon Wafer Technology Co., Ltd.'s patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Xi'an Eswin Silicon Wafer Technology Co., Ltd..

What does claim depth mean for Xi'an Eswin Silicon Wafer Technology Co., Ltd.'s patents?

Xi'an Eswin Silicon Wafer Technology Co., Ltd.'s patents average 11.1 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Xi'an Eswin Silicon Wafer Technology 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.

How to use this portfolio

Xi'an's 8 grants land it in the top 21% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Xi'an ranks #33,914 of 50,000. Top 50 holders
Most of this portfolio concentrates in C30B - see who else leads that technology area. C30B leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

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.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.