HM

Hiroya Masaki

KO Konica: 3 patents #771 of 1,958Top 40%
KC Konishiroku Photo Industry Co.: 2 patents #360 of 894Top 45%
Overall (All Time): #1,059,792 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5093220 Electrostatic latent image developer Meizo Shirose, Michiaki Ishikawa, Hiroyuki Takagiwa 1992-03-03
5026620 Method for forming electrophotographic images Hiroyuki Takagiwa, Meizo Shirose, Michiaki Ishikawa 1991-06-25
5021317 Electrostatic latent image developer with toner particles surface treated with a polysiloxane having ammonium salt functional groups Akitoshi Matsubara, Jiro Takahashi, Hiroyuki Takagiwa 1991-06-04
4960664 Developer composition for developing electrostatic image and toner image forming process Hiroyuki Yamada, Hiroyuki Takagiwa, Takahira Kasuya, Jiro Takahashi, Masafumi Uchida +1 more 1990-10-02
4943507 Toner for developing electrostatic latent image and method for developing electrostatic latent image with the same Jiro Takahashi, Kenzi Tsuzita, Hiroyuki Takagiwa, Kunio Shigeta 1990-07-24