Our Success

Story

A story about tradition,
entrepreneurship and
pioneering spirit

The roots of our business have been in the hands of the Spring family for three generations. To us, family means showing true dedication and a high degree of involvement in the wellbeing of our company. Below you can find the most important milestones of two companies that merged late, make Pureon what it is today: a company that is globally operating. A company that passionately strives to make a positive impact in everything it does. And: the leading global supplier of surface finishing solutions for high-tech materials.

Pureon opens its manufacturing site in
Suzhou City, China.

2023

2022

Pureon receives the US patent for
next generation ULTRA-SOL STD
slurry for SiC wafer polishing.

Microdiamant acquires US-based Eminess
Technologies and merges under the new brand
Pureon. The combined company is the leading
global provider of surface finishing solutions
for high-tech materials, with a strong market
presence in Europe, America and Asia.

2020

2019

Founding of Chinese subsidiary
in Suzhou City.

Opening of the Surface Lab
in Lengwil, Switzerland.

2017

2016

Launch and patenting of IRINO
composite polishing pad.

Launch of SPLENDIS universal-use
diamond suspensions.

2015

2015

The company introduces ULTRA-SOL OPTIQ
to precision optics market.

Pureon’s Monroe siteis awarded its
first Star Safety Award.

2014

2014

Opening of the US Surface Lab,
located on campus of UNC in Charlotte, NC.

Launch of SQUADRO, the new
generation fine grinding pad.

2014

2013

The Monroe, NC factory is relocated to a
new facility. This step increases slurry, pad and fixture
capacity and triples its manufacturing footprint.

The Swiss Venture Club's Entrepreneur Award
Ostschweiz 2012 goes to Pureon (known at that
time under the name Microdiamant).

2012

2010

Foundation of German production site.
Acquisition and integration of
Oberflächentechnologien Ziesmer.

Introduction of ULTRA-SOL STD
slurries for SiC wafer polishing.

2008

2008

Launch of the inhouse R&D department
and start of engineered suspension
production.

Eminess Technologies, a technology
leader specializing in advanced
surface polishing consumables,
was founded.

2000

1999

The third-generation of the Spring family,
Daniel and Martin Spring, take over
the company.

The company acquires the Mypolex
polycrystalline diamond business
from DuPont, USA, securing its own
source of polycrystalline diamond.

1999

1995

Invention of GAF (guaranteed
agglomerate-free) Liquid Diamond.

The company moves into
its new headquarters in
Lengwil, Switzerland.

1995

1987

As the first micronizer worldwide,
the company implements an ISO 9000
certified quality management system.

Kurt Spring takes over the
company he will lead for
the next 25 years.

1974

1970

Invention of the first stable
diamond suspension.

The company is founded by Rudolf Spring
under the name Rudolf Spring AG.

1952

1994

Rudolf Spring AG transforms into a globally active company.

1970

Invention of the first stable diamond suspension.

1974

The company Rudolf Spring AG is founded.

2023

Pureon opens its manufacturing site in Suzhou City, China.

2022

Pureon receives the US patent for next generation ULTRA-SOL STD slurry for SiC wafer polishing.

2020

Microdiamant acquires US-based Eminess Technologies and merges under the new brand Pureon. The combined company is the leading global provider of surface finishing solutions for high-tech materials, with a strong market presence in Europe, America and Asia.

2019

Founding of Chinese subsidiary in Suzhou City.

2017

Opening of the Surface Lab in Lengwil, Switzerland.

2016

Launch and patenting of IRINO composite polishing pad.

2015

Launch of SPLENDIS universal-use diamond suspensions.

2014

Pureon’s Monroe siteis awarded its first Star Safety Award.

2014

Opening of the US Surface Lab, located on campus of UNC in Charlotte, NC.

2014

Launch of SQUADRO, the new generation fine grinding pad.

2013

The Monroe, NC factory is relocated to a new facility. This step increases slurry, pad and fixture capacity and triples its manufacturing footprint.

2012

The Swiss Venture Club's Entrepreneur Award Ostschweiz 2012 goes to Pureon (known at that time under the name Microdiamant).

2010

Foundation of German production site. Acquisition and integration of Oberflächentechnologien Ziesmer.

2008

Introduction of ULTRA-SOL STD slurries for SiC wafer polishing.

2008

Launch of the inhouse R&D department and start of engineered suspension production.

2000

Eminess Technologies, a technology leader specializing in advanced surface polishing consumables, was founded.

1999

The third-generation of the Spring family, Daniel and Martin Spring, take over the company.

1999

The company acquires the Mypolex polycrystalline diamond business from DuPont, USA, securing its own source of polycrystalline diamond.

1995

The company moves into its new headquarters in Lengwil, Switzerland.

1987

As the first micronizer worldwide, the company implements an ISO 9000 certified quality management system.

1974

Kurt Spring takes over the company he will lead for the next 25 years.

1970

Invention of the first stable diamond suspension.

1952

The company is founded by Rudolf Spring under the name Rudolf Spring AG.

Insights

Sep 2025

From Sample to Solution: How Pureon’s Surface Lab boosts Precision Surface Processes

From Sample to Solution: How Pureon’s Surface Lab boosts Precision Surface Processes Validation. Optimization. Implementation — without interrupting the production […]

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Sep 2025

Beyond SiC: The Case for Diamond in the Next Semiconductor Leap

Beyond SiC: The Case for Diamond in the Next Semiconductor Leap The Relentless Drive for Progress Semiconductor materials have always […]

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Aug 2025

Debut in Munich: Pureon at Laser World of Photonics

Debut in Munich: Pureon at Laser World of Photonics It was a premiere worth showcasing: For the first time, Pureon […]

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Jul 2025

New Scientific Publication: Pureon Contributes to Open-Access Book on Semiconductor Technology

New Scientific Publication: Pureon Contributes to Open-Access Book on Semiconductor Technology Open-access publications play a crucial role in making education […]

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