% Expired Patents = 25.0

EPO Patents = 3

Trademarks = 2

Forward Citations = 16

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6 inventors (with patents filed for the assignee):

Holm Kandler (3 out of 3 patents)

Thomas Sahiri (2 out of 7 patents)

Stefanie Greiffenreich (1 out of 1 patent)

4. Christof Koltunski (1 out of 1 patent)

5. Thomas Sahari (1 out of 1 patent)

6. Peter Mayer (1 out of 1 patent)

7. Holm Kändler (1 patent)

8. Jürgen Ell (0 patent)

9. Markus Cohn (0 patent)

4 patents: Sort by Forward Citations

1. 9297760 - Apparatus for analysing a small amount of liquid (2016-03-29),

2. 7688429 - Device for the analysis or absorption measurement of a small quantity of a liquid medium by means of light (2010-03-30),

3. 7483138 - Device for analysis or absorption measurement on a small amount of liquid (2009-01-27),

4. 4218141 - Vapor analysis test tube (1980-08-19),

Company Overview

Hellma GmbH & Co. KG is a leading manufacturer of high-quality products for optical analysis. With over 100 years of experience in the industry, Hellma is known for its precision measurement technology and expertise in the field of spectroscopy. The company offers a wide range of products including cuvettes, optical filters, flow cells, and calibration standards, all designed to meet the highest quality standards. Hellma serves customers in various industries including pharmaceuticals, biotechnology, and environmental analysis, providing them with reliable solutions for their analytical needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#9 in Muelheim

#7,037 in Germany

Muelheim, Germany

Hellma Gmbh & Co., Kg

Forward Citations = 16

6 inventors:

Holm Kandler (3 out of 3 patents)

Thomas Sahiri (2 out of 7 patents)

Stefanie Greiffenreich (1 out of 1 patent)

4. Christof Koltunski (1 out of 1 patent)

5. Thomas Sahari (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hellma Gmbh & Co., Kg. Retrieved from https://idiyas.com/company/hellma-and-company-kg

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]

3 patents (EPO):

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]