QSIL Overview

  • Year Founded
  • 1992

Year Founded

  • Status
  • Acquired/​Merged

  • Employees
  • 600

Employees

  • Latest Deal Type
  • M&A

  • Financing Rounds
  • 12

  • Investments
  • 10

QSIL General Information

Description

Manufacturer of fused quartz products intended to serve the chemical, lighting, and electronics sectors. The company's products are created by melting and fabricating fused quartz with a high softening point, low thermal expansion, and greater thermal shock resistance, enabling customers from chemical, lighting and electronics sectors to use them for industrial processes requiring heating at high temperatures.

Contact Information

Website
www.qsil.com
Formerly Known As
QSIL Beteiligungsgesellschaft mbH, QSIL International GmbH, QSIL Holding GmbH
Ownership Status
Acquired/Merged
Financing Status
Formerly PE-Backed
Corporate Office
  • Gewerbering 8
  • 98693 Ilmenau
  • Germany
+49 03677
Primary Industry
Other Materials
Acquirer
Vertical(s)
Corporate Office
  • Gewerbering 8
  • 98693 Ilmenau
  • Germany
+49 03677

Want detailed data on 11M+ companies?

What you see here scratches the surface

Request a free trial

Want to dig into this profile?

We’ll help you find what you need

Learn more

QSIL Valuation & Funding

Deal Type Date Amount Valuation/
EBITDA
Post-Val Status Debt

This information is available in the PitchBook Platform. To explore QSIL‘s full profile, request access.

Request a free trial

QSIL Patents

QSIL Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
WO-2025073418-A1 Method for producing an mas glass body, powder mixture, mas glass body, and use of a mas glass body Inactive 06-Oct-2023
WO-2025073557-A1 Method for producing an mgo-al2o3-sio2 glass body, powder mixture, mgo-al2o3-sio2 glass body, and use of an mgo-al2o3-sio2 glass body Inactive 06-Oct-2023
JP-2025539649-A Method for producing mas glass with high etching uniformity Pending 15-Dec-2022
US-20260200789-A1 Process for producing an mas glass with high etch homogenieity Pending 15-Dec-2022
WO-2024126461-A1 Process for producing an mas glass with high etch homogenieity Inactive 15-Dec-2022 C03C3/085
To view QSIL’s complete patent history, request access »

QSIL Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

Similarweb Unique Visitors

Majestic Referring Domains

PitchBook’s non-financial metrics help you gauge a company’s traction and growth using web presence and social reach.

Request a free trial

QSIL Former Investors

Investor Name Investor Type Holding Investor Since Participating Rounds Contact Info

This information is available in the PitchBook Platform. To explore QSIL‘s full profile, request access.

Request a free trial

QSIL Investments & Acquisitions (10)

QSIL’s most recent deal was a Buyout/LBO with ROBU Glasfilter-Gerate. The deal was made on 16-Feb-2023.

Company Name Deal Date Deal Type Deal Size Industry Lead Partner
ROBU Glasfilter-Gerate 16-Feb-2023 Buyout/LBO Other Commercial Products
H.C. Starck High Performance Metal Solutions (4 Location in Hermsdorf, Calne, Taicang and Bangalore) 21-Sep-2022 Buyout/LBO Other Commercial Services
Hightech Ceram 01-Sep-2021 Buyout/LBO Other Commercial Products
QSIL Ingenieurkeramik 13-Sep-2019 Buyout/LBO Industrial Supplies and Parts
Qsil Ceramics 21-Dec-2018 Buyout/LBO Industrial Supplies and Parts
You’re viewing 5 of 10 investments and acquisitions. Get the full list »

QSIL Affiliates

Subsidiaries (3)

Name Industry Location Year Founded
Qsil Metals Beteiligungsgesellschaft mbH Hermsdorf, Germany 2021
Mineral7 Ilmenau Ot Langewiesen, Germany 2009
QSIL Ingenieurkeramik Frankenblick, Germany 1996

QSIL FAQs

  • When was QSIL founded?

    QSIL was founded in 1992.

  • Where is QSIL headquartered?

    QSIL is headquartered in Ilmenau, Germany.

  • What is the size of QSIL?

    QSIL has 600 total employees.

  • What industry is QSIL in?

    QSIL’s primary industry is Other Materials.

  • Is QSIL a private or public company?

    QSIL is a Private company.

  • What is QSIL’s current revenue?

    The current revenue for QSIL is .

  • Who are QSIL’s investors?

    CFH Management, MicroVenture Lucrum 1, SEMENTIS Capital, Süd Beteiligungen, and VM Capital Advisors are 5 of 7 investors who have invested in QSIL.

  • When was QSIL acquired?

    QSIL was acquired on 01-Dec-2023.

  • Who acquired QSIL?

    QSIL was acquired by Schott (Mainz).

Data Transparency

  • Meet our data hygiene team

    Discover how our experts ensure you’re getting the most accurate financial data in the industry.

    Read more
  • How PitchBook sources data

    Our data operations team has logged over 3.5 million hours researching, organizing, and integrating the information you need most.

    Discover our process