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USPTO Patent Rankings Data through Dec 31, 2025
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Stefan Leffler — 3 Patents

DADirecta Ab: 3 patents #1 of 9Top 15%
Järfälla, SE: #66 of 260 inventorsTop 30%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Stefan Leffler has been granted 3 US patents while listed as an inventor at Directa Ab. The first was granted in 2009 and the most recent in October 2015. Stefan Leffler ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Stefan Leffler in Järfälla, SE.

Patents per Year

Patents granted per year, 2009 to 2015Bar chart with a peak of 1 patents in 2009.peak 12009: 1 patents20092010: 1 patents20102015: 1 patents2015

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9149343 Dental instrument, system and method Dan Ericson, Jan Johansson, Orjan Arkang, Olof Larsson 2015-10-06
D627887 Dental instrument Jan Johansson, Dan Ericson, Orjan Arkang, Olof Larsson 2010-11-23
D597208 Dental instrument Dan Ericsson, Per Larsson, Olof Larsson 2009-07-28

Frequent Collaborators

Olof Larsson3 shared
Dan Ericson2 shared
Orjan Arkang2 shared
Jan Johansson2 shared
Per Larsson1 shared
Dan Ericsson1 shared

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Daniel Silion3
Hangfeng Li3
Mark Vander Wal3
Chad M. Goltzman3
Sathish Kumar Thanganathan3
Debbie Maloyd3
Ethan Alexander Garrett3
Paul Sabatka3
Sergii Bomko3