This inventor holds 6 USPTO granted patents and 3 EPO patents. Top assignees: Siemens Aktiengesellschaft, Airoptic Sp. Z O.o., Altoptronic Ab. Active years: 1992-2015.
Company Filing History:
4 out of 30,859 
1 out of 1 
1 out of 1 Years Active: 1992-2015
Title: Innovations by Inventor Stefan Lundqvist
Introduction
Stefan Lundqvist is a notable inventor based in Askim, Sweden. He has made significant contributions to the field of gas detection technology, holding a total of 6 patents. His work focuses on innovative methods for measuring gas concentrations, particularly alcohol vapor.
Latest Patents
One of his latest patents is a "Method and apparatus for remote detection of alcohol vapor in the atmosphere." This invention utilizes a light beam generated by a light source with a wavelength that corresponds to the ethanol absorption spectrum. The light beam is sent through a measuring space containing exhaled breath, and the intensity of the light passing through is measured. By analyzing the spectral dependence of light intensity on alcohol concentration, the ethanol vapor concentration is determined, providing information about the ethanol content to a display or device.
Another significant patent is the "Wavelength modulation spectroscopy method and system." This method involves modulating the wavelength of a light source with a modulation signal while sweeping over an interaction feature of a sample. The intensity of the light source is also modulated at a wavelength outside the interaction feature. The light is then passed to a sample and detected, with the output being demodulated and normalized to measure the concentration of a gas component accurately.
Career Highlights
Stefan Lundqvist has worked with prominent companies such as Siemens Aktiengesellschaft and Altoptronic AB. His experience in these organizations has contributed to his expertise in developing advanced gas detection technologies.
Collaborations
Throughout his career, Stefan has collaborated with talented individuals, including Per-Arne Thorsén and Pawel Kluczynski. These collaborations have likely enriched his work and led to innovative solutions in his field.
Conclusion
Stefan Lundqvist is a distinguished inventor whose work in gas detection technology has led to multiple patents and advancements in the field. His innovative methods for measuring alcohol vapor concentration demonstrate his commitment to improving safety and technology.