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USPTO Patent Rankings Data through Sept 30, 2025
KU

Keiko Ujihara — 1 Patent

KOKonica: 1 patents #1,290 of 1,958Top 70%
Overall (All Time): #3,673,254 of 4,157,543Top 90%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5705306 Toner for forming electrophotographic image and developers using the same Ryuji Kitani, Meizo Shirose, Tatsuya Nagase, Michiaki Ishikawa 1998-01-06