Where does Siltronic AG rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Siltronic AG ranks #3,108 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 Siltronic AG hold?

Siltronic AG holds 122 US utility patents granted between 2015 and 2025, spanning 21 technology areas.

What is Siltronic AG's Innovation Score?

Siltronic AG has an Innovation Score of 45.1 out of 100 (top 24% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Siltronic AG's patent grant rate increasing or decreasing?

Siltronic AG's recent grant velocity is -31% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Siltronic AG's patents?

Siltronic AG's patents average 12.1 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 Siltronic AG 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

Siltronic AG

Q: What technology areas does Siltronic AG focus on?

Siltronic AG'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 67 patents. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 122 granted patents across 21 technology areas, recorded in grant years 2015–2025. 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: 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 by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Siltronic ranks #3,108 of 49,997 tracked US assignees by granted-patent volume, with 122 patents across 21 technology areas.

#3,108
of 49,997 US assignees by volume: Top 24%
by Innovation Score (45.1/100): 12.1
avg claims per patent: -31%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3108 · Foreign Corporation #3,108 · 122 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-MID 122 grants
TOP-DECILE #3,108/49,997
PHOTO-FINISH Quarkstar
CPC-FOCUS C30B · 21 areas
INNOV-PAR 45.1/100
CLAIMS-RICH 12.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -31% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Quarkstar LLC (±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.

Qualcomm Incorporated · highest

85
Lixil · near

45
Refractory Intellect… · near

45
Route 92 Medical · near

45
Siltronic · this assignee

45
Yamada Manufacturing · near

45
3D Lighting… · lowest

7

What this shows Siltronic's Innovation Score is 45.1/100 (top 24% 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.

Where Siltronic's grants concentrate

Siltronic AG is a focused PatentsView assignee: 21 CPC subclasses with 54.9% of grants classified under 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). Peak complete grant year is 2015 (19 grants) versus a trough of 7 in 2019. By volume, Siltronic sits between Quarkstar LLC and CCL Label, Inc..

Siltronic's three-year grant acceleration

From 2019–2021 to 2022–2024, Siltronic AG moved from 29 to 22 grants (0.76x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,964. See the growth leaderboard.

Quarkstar

122
Saint-gobain Isov…

122
Smartsky Networks

122
Sensors Incorpora…

122
Thermwood

122
Siltronic ◀

122
Accuray Incorpora…

121
Bando Chemical In…

121
CCL Label

121

What this shows Siltronic holds 122 patents at rank #3,109, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Siltronic

By rank, the assignees closest to #3,109 in granted patent volume.

Leaders in C30B (Single-crystal Growth)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Siltronic, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (45 here).

Yamada Manufacturing Co., Ltd. 45 Lixil Corporation 45 Refractory Intellectual Property GMBH & Co. KG 45 Route 92 Medical, Inc. 45

Similar claim depth

Nearest assignees by average claims per patent (12.1 here).

Emitec Gesellschaft fuer Emissionstechnologie mbH 12.1 avg France Telecom 12.1 avg Lanto Electronic Limited 12.1 avg Alpine Electronics, Inc. 12.1 avg

Siltronic's Innovation Score vs. every tracked assignee

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

45 Top 24% higher than 76% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Siltronic AG patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	19	15.6%
2016	16	13.1%
2017	14	11.5%
2018	8	6.6%
2019	7	5.7%
2020	8	6.6%
2021	14	11.5%
2022	7	5.7%
2023	7	5.7%
2024	8	6.6%
2025partial year	14	11.5%

Which technologies does Siltronic AG 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 67

H01L - Semiconductor Devices NOT Covered BY Class H10 56

H10D - Inorganic Electric Semiconductor Devices 20

B28D - Working Stone OR Stone-like Materials 20

B24B - Machines, Devices, OR Processes FOR Grinding OR Polishing ; Dressing OR Conditioning OF Abrading SURFACES; Feeding OF Grinding, Polishing, OR Lapping Agents 20

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 14

B23D - PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; Like Operations FOR Working Metal BY Removing Material, NOT Otherwise Provided FOR 13

Y10T - Technical Subjects Covered BY Former US Classification 13

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 6

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 5

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 4

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 2

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 2

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

C03C - Chemical Composition OF Glasses, Glazes OR Vitreous ENAMELS; Surface Treatment OF GLASS; Surface Treatment OF Fibres OR Filaments Made From Glass, Minerals OR SLAGS; Joining Glass TO Glass OR Other Materials 1

Top 15 of 21 technology areas

Where it ranks

Overall rank by patents

#3,108

of 49,997 tracked assignees

Innovation Score

45.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Siltronic AG's patent record in context - here's where to go next.

Siltronic AG's lead technology class 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 Polycrys), 54.9% of its portfolio - see every assignee active in that class. Explore C30B
Ranked #3,108 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Siltronic AG against Quarkstar LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 45.1/100 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.