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Frankfurt, Germany

Biotest-Serum-Institut Gmbh

USPTO Granted Patents = 27

Forward Citations = 742

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28 inventors (with patents filed for the assignee):

Wolfgang Stephan (10 out of 20 patents)

Ronald Kotitschke (6 out of 9 patents)

Hans Schleussner (4 out of 8 patents)

4. Klaus Bonhard (4 out of 4 patents)

5. Wolfram H Walker (4 out of 5 patents)

6. Hans H Sonneborn (4 out of 4 patents)

7. Udo Schwulera (3 out of 4 patents)

8. Norbert Kothe (2 out of 9 patents)

9. Uwe Boysen (2 out of 2 patents)

10. Hans D Hempel (2 out of 2 patents)

11. Dieter Merz (2 out of 2 patents)

12. Horst Uthemann (1 out of 3 patents)

13. Bertram Eichentopf (1 out of 4 patents)

14. Karlheinz Ganshirt (1 out of 3 patents)

15. Jurgen Horn (1 out of 4 patents)

Core Competencies:

Hemoglobin

Immunoglobulin

Blood Typing

Microfiltration

Interleukin-2

Plasma Fractionation

Cell Suspension

Antibody Detection

Sterilization

Nutrient Medium

Microbial Count

Blood Bags

27 patents: Sort by Forward Citations

1. 4777244 - Crosslinked hemoglobin of extended shelf life and high oxygen transport (1988-10-11),

2. 4770856 - Microtiter plate for blood typing (1988-09-13),

3. 4752573 - Use of tetrahydrobiopterin to enhance the proliferative activity of (1988-06-21),

4. 4751183 - Monoclonal antibody that recognizes a structure common to human (1988-06-14),

5. 4678753 - Blood-culture flask with integrated subculture (1987-07-07),

6. 4663293 - Device for testing air for microorganism content (1987-05-05),

7. 4572899 - Aqueous solution for suspending and storing cells, especially erthrocytes (1986-02-25),

8. 4508833 - Separation of interleukin-2 from phytohemagglutinin by dye matrix (1985-04-02),

9. 4503039 - Coagulant plasma-protein solution (1985-03-05),

10. 4450078 - Microfiltration device for the filtration of coagula and microaggregates (1984-05-22),

11. 4439357 - Process for obtaining hepatitis-safe, sterile hemoglobin solutions free (1984-03-27),

12. 4435179 - Blood bags with interconnecting system (1984-03-06),

13. 4396717 - Nutrient medium carrier system (1983-08-02),

14. 4370264 - Method for the cold sterilization of preparations containing blood (1983-01-25),

15. 4336248 - Preparation of coupled hemoglobin molecules (1982-06-22),

Company Overview

Biotest-Serum-Institut GmbH is a prominent biopharmaceutical company based in Frankfurt, Germany, specializing in the development and production of immunoglobulins and other therapeutic proteins derived from human plasma. The organization focuses on innovative therapies for serious diseases, particularly in the fields of hematology, immunology, and intensive care medicine. With a commitment to high-quality standards, Biotest plays a significant role in advancing healthcare solutions both in Europe and globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

27 Patents

#38 in Frankfurt, M.-Niederrad

#1,739 in DT

#24,012 in the World

Frankfurt, Germany

Biotest-Serum-Institut Gmbh

Forward Citations = 742

28 inventors:

Wolfgang Stephan (10 out of 20 patents)

Ronald Kotitschke (6 out of 9 patents)

Hans Schleussner (4 out of 8 patents)

4. Klaus Bonhard (4 out of 4 patents)

5. Wolfram H Walker (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Biotest-Serum-Institut Gmbh. Retrieved from https://idiyas.com/company/biotest-serum-institut

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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