John Jansen has been granted 6 US patents while listed as an inventor at Ch2M Hill . The first was granted in 1996 and the most recent in March 2014. John Jansen ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list John Jansen in West Bend, WI, US.
Patents per Year Patents granted per year, 1996 to 2014 Bar chart with a peak of 1 patents in 1996. peak 1 1996: 1 patents 1996 2005: 1 patents 2005 2006: 1 patents 2006 2011: 1 patents 2011 2013: 1 patents 2013 2014: 1 patents 2014
Issued Patents All Time
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Showing 1–6 of 6 patents
Patent # Title Co-Inventors Date
8679370 Conductive coating, method for preparing a coating, roller, and method for manufacturing a roller and using a coating Tsuyoshi Tokiwa , Eiji Sawa 2014-03-25
8419977 Conductive coating, method for preparing a coating, roller, and method for manufacturing a roller and using a coating Tsuyoshi Tokiwa , Eiji Sawa 2013-04-16
7962077 Developing roller, developing apparatus comprising the developing roller, and method for providing the developing roller Tsuyoshi Tokiwa , Eiji Sawa 2011-06-14
7000711 Horizontal bore cryogenic drilling method Thomas J. Miller 2006-02-21
6881347 Method for removing radioactive substances from affecting water wells Steven H. Schultz , Daniel R. Butler 2005-04-19
5579845 Method for improved water well production Robert Taylor , William C. Frazier 1996-12-03