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For the Inventor, By the Inventor

Schaffhausen, Switzerland

Merck Eprova Ag


USPTO Granted Patents = 6



Forward Citations = 51

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28 inventors (with patents filed for the assignee):

goldMedal Rudolf Moser (5 out of 46 patents)

silverMedal Viola Groehn (5 out of 40 patents)

bronzeMedal Fritz Blatter (3 out of 58 patents)

4.  Thomas Egger (3 out of 14 patents)

5.  Emil D Kakkis (1 out of 45 patents)

6.  Alejandro Dorenbaum (1 out of 12 patents)

7.  Simon Mensah Ametamey (1 out of 18 patents)

8.  Tobias Ludwig Ross (1 out of 5 patents)

9.  Andreas Schumacher (1 out of 7 patents)

10.  Fredric D Price (1 out of 18 patents)

11.  Daniel I Oppenheimer (1 out of 8 patents)

12.  Pierre Martin (1 out of 49 patents)

13.  Dirk Spielvogel (1 out of 3 patents)

14.  Heinrich Bollinger (1 out of 6 patents)

15.  Hans Rudolf Müller (1 out of 1 patent)


6 patents:

1. 8344140 - [object Object] (2013-01-01),
2. 8344139 - Process for preparing crystalline polymorphic forms of (6R)-L-erythro-tetrahydrobiopterin dihydrochloride (2013-01-01),
3. 8067416 - Methods and compositions for the treatment of metabolic disorders (2011-11-29),
4. 7732599 - Process for preparing tetrahydrobiopterin and analogs of tetrahydrobiopterin (2010-06-08),
5. 7727987 - Crystalline forms of (6R)-L-erythro-tetrahydrobiopterin dihydrochloride (2010-06-01),
6. 6849735 - Methods of synthesis for 9-substituted hypoxanthine derivatives (2005-02-01),
Company Overview
Merck Eprova Ag is a subsidiary of Merck Group, a leading science and technology company. They specialize in the development and production of high-quality reference materials for analytical testing in various industries. With a strong commitment to quality and innovation, Merck Eprova Ag strives to deliver reliable solutions to their customers worldwide.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#37 in Schaffhausen

#1,481 in Switzerland

Schaffhausen, CH
Schaffhausen, Switzerland

Merck Eprova Ag

Forward Citations = 51

28 inventors:

goldMedal Rudolf Moser (5 out of 46 patents)

silverMedal Viola Groehn (5 out of 40 patents)

bronzeMedal Fritz Blatter (3 out of 58 patents)

4.  Thomas Egger (3 out of 14 patents)

5.  Emil D Kakkis (1 out of 45 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Merck Eprova Ag. Retrieved from https://idiyas.com/company/merck-eprova-ag

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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