User:Claude H. R. Dequatre

I graduated from the National Institute of Applied Sciences of Lyon-France in chemistry (1973). Phd in polymer science (1977). The whole career in international compagnies of the polymer industry (17 years in R&D and 20 years in productstewardship). Links with high schools and universities, chairman of the board of the National Chemistry School of Lille (France), lecturer in polymer science at the Sciences and Technics University of Lille (France). Now retired. Fiels of interest: numbers, primes, integer sequences, applied statistics, data analysis, astronomy and astrophysics.