IFJ_062021_executiveqa_Marina_Headshot Ken Norberg January 3, 2022 94 Views Marina Crnoja-Cosic, Ph.D., is director of New Business Development at Kelheim Fibres. With a doctorate in chemistry, she has many years of experience in fiber applications and business development. Marina Crnoja-Cosic, Ph.D., is director of New Business Development at Kelheim Fibres. With a doctorate in chemistry, she has many years of experience in fiber applications and business development.