Johan Hellgren

This inventor holds 12 USPTO granted patents and 8 EPO patents. Top assignees: Oticon A/s, Inficon Gmbh, Inficon Holding Ag. Active years: 2010-2024.

USPTO Granted Patents = 12

% Patents Active = 75.0

EPO Patents = 8 (Patent Applications = 9)

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 24(Granted Patents)

Location History:

Hellerup, DK (2010)
Smørum, DK (2011)
Linköping, SE (2013 - 2014)
Linkoping, SE (2016 - 2024)

Company Filing History:

Years Active: 2010-2024

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11982651 - Method for adapting the concentration of a sample gas in a gas mixture to be analysed by a gas chromatograph assembly, and chromatograph assembly therefore (2024-05-14),

2. 10866225 - Wide range gas detection using an infrared gas detector (2020-12-15),

3. 10436708 - Method for quantifying the amount of optically interfering gas impurities (2019-10-08),

4. 10352848 - Gas detection using gas modulation (2019-07-16),

5. 10309943 - Infrared gas detector with secondary sensor (2019-06-04),

6. 9338562 - Listening system with an improved feedback cancellation system, a method and use (2016-05-10),

7. 8798297 - Listening system with an improved feedback cancellation system, a method and use (2014-08-05),

8. 8687832 - Hearing aid system with feedback arrangement to predict and cancel acoustic feedback, method and use (2014-04-01),

9. 8538052 - Generation of probe noise in a feedback cancellation system (2013-09-17),

10. 8477952 - Audio system with feedback detection means (2013-07-02),

11. 7925031 - Audio system with feedback detection means (2011-04-12),

12. 7688990 - Hearing aid with anti feedback system (2010-03-30),

Title: The Innovations of Johan Hellgren

Introduction

Johan Hellgren is a notable inventor based in Linkoping, Sweden. He has made significant contributions to the field of gas detection and analysis, holding a total of 12 patents. His work has advanced the technology used in gas chromatograph assemblies, making them more efficient and effective.

Latest Patents

Among his latest patents is a method for adapting the concentration of a sample gas in a gas mixture to be analyzed by a gas chromatograph assembly. This innovative assembly includes a sample gas inlet, a secondary gas inlet, a gas chromatograph sensor, a gas chromatograph column, and a gas chromatograph bypass parallel to the column. Another significant patent involves a method for wide range gas detection using a gas detection system. This system comprises a sample gas inlet, a reference gas inlet, a gas modulation valve, and a gas analyzer, which allows for alternating connections to optimize gas concentration analysis.

Career Highlights

Johan has worked with several prominent companies throughout his career, including Oticon A/S and Inficon GmbH. His experience in these organizations has contributed to his expertise in gas detection technologies and innovations.

Collaborations

He has collaborated with notable colleagues such as Thomas Bo Elmedyb and Henrik Vennerberg, further enhancing his work in the field.

Conclusion

Johan Hellgren's contributions to gas detection technology through his patents and collaborations have made a significant impact in the industry. His innovative methods continue to influence advancements in gas analysis systems.