Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ronald Callan — 2 Patents

BCBaldwin Web Controls: 2 patents #6 of 9Top 70%
Lemont, IL: #82 of 212 inventorsTop 40%
Illinois: #34,875 of 84,256 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Ronald Callan has been granted 2 US patents while listed as an inventor at Baldwin Web Controls. All of these patents were granted in 1997. Ronald Callan ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Ronald Callan in Lemont, IL, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5678484 Anti-wrap device for a web press Michael Gregory, Steven Drensky 1997-10-21
5652388 Apparatus and method for detecting printing press web breakage Michael Gregory, Tat Luk, Gifford Neill 1997-07-29