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John Alan Robertsen Edit Profile

consultant , Corporation executive

John Alan Robertsen, American management services corporation executive, consultant. Achievements include invention of international biohazard symbol; 9 patents. Recipient Meritorious Service award, United States Public Health Service, 1961.


Robertsen, John Alan was born on June 21, 1926 in Kenosha, Wisconsin, United States. Son of Tony and Alta Emma (Jensen) Robertsen.


Bachelor of Science, University Wisconsin, 1952. Master of Science, University Wisconsin, 1956. Doctor of Philosophy, University Wisconsin, 1958.


Chief microbiology section Leprosy Study Center, United States Public Health Service, 1958—1962. Leader infectious disease research group Dow Chemical Company, Dow Research Center, Zionsville, Indiana, 1962—1965, co-founder biohazards department, 1965—1970. Senior partner Robertsen and Associates, Minnetonka, Minnesota, since 1960.

Vice president, chief operating officer Extensor Corporation, since 1973. Chief consultant marketing Sedna Corporation, St. Paul, since 1982. Consultant product planning Zinpro Corporation, Chaska, since 1983.

Member editorial board Topics Hospital Pharmacy Management, since 1983. Former contributing editor International Journal Leprosy. Served as sergeant Infantry United States Army, 1944-1947, PTO.


  • Achievements include invention of international biohazard symbol. 9 patents.


  • Other Work

    • Contributor articles to professional publications.


Past mem State of Minnesota Comprehensive Health Planning Advisory Board. Science curriculum adviser Minnetonka School District. Member of Friends Hennepin County Park Reserve District (president), University Wisconsin Alumni Association (board directors Indiana chapter), Twin Cities Productivity Forum, Sales and Marketing Executives International, American Society Microbiology, American Radio Relay League, American Society Performance Improvement, Indianapolis Literary Club (past vice president).


  • Other Interests

    Birdwatching, camping, canoeing.


Married Ann Coffeen Holton, October 26, 1957. Children: Christine Marie, Steven Anthony.

Tony Robertsen

Alta Emma (Jensen) Robertsen

Ann Coffeen Holton

Christine Marie Robertsen

Steven Anthony Robertsen