May God bless you and your...
Remember Jack at this time of year and always. Michael and I send our love and warm wishes to Jeanus and her family.
Mary Jane Coleman
January 23, 2023 | Friend


Westlake, Ohio
1933 - 2021
On Tuesday, January 26, 2021, Jack L. Koenig, loving husband, father of four children, grandfather of ten grandchildren, and great-grandfather of two great-grandchildren, passed away at the age of 87. Jack was born on February 12, 1933 in Cody, Nebraska. He received his B.A. in Chemistry and...
Read MoreRemember Jack at this time of year and always. Michael and I send our love and warm wishes to Jeanus and her family.
Mary Jane Coleman
January 23, 2023 | Friend
Jeanus: Marilyn and I just learned yesterday that Jack had passed away. We send our condolences to you and the rest of your family. Jack was an outstanding person as well as an outstanding advisor, mentor, and friend. It was an honor and privilege to have worked with him first as a student and later as a colleague. We have many wonderful memories of the times we spent together. He will surely be missed. Best wishes to you and your family.
Jim and Marilyn Boerio
March 11, 2021 | Student
Dear Jeanus and the wonderful Koenig's family. We are so saddened for your loss, our loss!, the loss of the most precious person I have known who altered many lives for the better. We will miss you, Jack, you changed our lives. and we love you forever. Marek, Kasia, and Ania Urban
Marek Urban
March 06, 2021 | Student
Jeanus, Both Michael and I were deeply saddened to learn of Jack's passing. We have thought of you, Jack, and your family often over the past years. Michael and I have so many wonderful and precious memories of the happy times spent together over the decades (Jack's 50th birthday, weddings, PSU football, etc.). I am sure you and so many of us will miss Jack forever. May he rest in peace with your beloved Stan until you all meet again. Again, we are so very sorry for your loss. Love,...
Mary Jane Coleman
February 05, 2021 | Friend
Thank you for your brave service to our country !
January 31, 2021
It was with great sadness that I learned that Jack passed away. He was full of life – a big guy with a big personality and a great sense of humor. He helped me enormously and changed my life. I'll always remember him with affection and gratitude. I am proud to be one of his former students.
Paul Painter
January 30, 2021 | Student
I met Jack for the first time while he worked at Du Pont. The Science of Polymers has been our common interest and our profession for 40 years. I visited his lab as a friend and as a professor and he was also back to our university in Milano. He was a great professor and a dear friend. The community of plastic scientists and technologists lost a great men.
Gus Zerbi
January 30, 2021