Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Thomas De Lange — 1 Patent

INIpcor Nv: 1 patents #2 of 14Top 15%
Pretoria, ZA: #183 of 529 inventorsTop 35%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Thomas De Lange has been granted 1 US patent while listed as an inventor at Ipcor Nv. All of these patents were granted in 2004. Thomas De Lange ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Thomas De Lange in Pretoria, ZA.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6803024 Benefication of titania slag by oxidation and reduction treatment Jacobus Philippus Van Dyk, Nanne Mattheus Vegter, Cornelia Petronella Visser, John D. Winter, Ernest A. Walpole +1 more 2004-10-12