Linkoping
Sweden
10
2021-10-14
The entities that hold a legal rights for patent applications filed by inventor HELLGREN Johan:
Johan HELLGREN from Linkoping, SE has applied for patents for these inventions. The list has both pending applications and granted patents:
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
#2 | 2019-02-07Method for quantifying the amount of optically interfering gas impurities
#3 | 2019-01-10Wide range gas detection using an infrared gas detector
#4 | 2018-11-08Infrared gas detector with secondary sensor
#5 | 2018-11-01Gas detection using gas modulation
#6 | 2014-12-04Listening system with an improved feedback cancellation system, a method and use
#7 | 2011-07-21Audio system with feedback detection means
#8 | 2010-10-07Hearing aid system with feedback arrangement to predict and cancel acoustic feedback, method and use
#9 | 2010-07-22Generation of probe noise in a feedback cancellation system
#10 | 2009-08-06Listening system with an improved feedback cancellation system, a method and use
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