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Schaffhausen, Switzerland

Eprova Ag

USPTO Granted Patents = 16

% Expired Patents = 6.3

Forward Citations = 164

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21 inventors (with patents filed for the assignee):

Martin Ulmann (11 out of 20 patents)

Josef Conti (7 out of 9 patents)

Rudolf Moser (6 out of 46 patents)

4. Hans R Muller (6 out of 9 patents)

5. Hans R Mueller (4 out of 4 patents)

6. Thomas Ammann (3 out of 11 patents)

7. Hans Rudolf Müller (3 out of 4 patents)

8. Gunter Muerdel (3 out of 3 patents)

9. Heinrich Bollinger (2 out of 6 patents)

10. Viola Groehn (1 out of 40 patents)

11. Alfred Hedinger (1 out of 9 patents)

12. Thomas Egger (1 out of 14 patents)

13. Martin Kurz (1 out of 4 patents)

14. Sergio Bianchi (1 out of 3 patents)

15. Rudolf Müller (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 6858731 - Process for the preparation of pure stereoisomers of tetrahydrofolic acid esters salts and tetrahydrofolic acid by fractionated crystallization of tetrahydrofolic acid esters salts (2005-02-22),

2. 6596721 - Stable crystalline (6R) -tetrahydrofolic acid (2003-07-22),

3. 6441168 - Stable crystalline salts of 5-methyltetrahydrofolic acid (2002-08-27),

4. 6271374 - Stable crystalline (6S)- and (6R)-tetrahydrofolic acid (2001-08-07),

5. 6194600 - Method of producing aminocyanoacetamide (2001-02-27),

6. 6160116 - Sodium salt of (6S)-folinic acid (2000-12-12),

7. 6011040 - Use of tetrahydrofolates in natural stereoisomeric form for the (2000-01-04),

8. 5817659 - Stable crystalline tetrahydrofolic acid salts (1998-10-06),

9. 5455236 - 5,10-methylenetetrahydrofolic acid-cyclodextrin inclusion compounds (1995-10-03),

10. 5347005 - Pharmaceutical compositions containing (65)-folinic acid and salts (1994-09-13),

11. 5300505 - Stable salts of 5,10-methylenetetrahydrofolic acid (1994-04-05),

12. 5134235 - Process for separating folinic acid (1992-07-28),

13. 5010194 - Method for the resolution of folinic acid (1991-04-23),

14. 5006655 - Process for the preparation of tetrahydrofolates (1991-04-09),

15. 4503252 - Process for the preparation of serinol and of serinol derivatives, and (1985-03-05),

Eprova AG is a Swiss company based in Schaffhausen, specializing in the development and manufacturing of innovative solutions in the field of analytical chemistry. The organization focuses on providing high-quality products and services for various applications, including environmental analysis and quality control in the pharmaceutical and food industries. Eprova AG is committed to advancing research and technology, ensuring that its offerings meet the evolving needs of its clients in both local and international markets.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

16 Patents

#26 in Schaffhausen

#762 in Switzerland

#37,766 in the World

Schaffhausen, Switzerland

Eprova Ag

Forward Citations = 164

21 inventors:

Martin Ulmann (11 out of 20 patents)

Josef Conti (7 out of 9 patents)

Rudolf Moser (6 out of 46 patents)

4. Hans R Muller (6 out of 9 patents)

5. Hans R Mueller (4 out of 4 patents)

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