MO

Masafumi Ohta

Ricoh Company: 6 patents #22 of 695Top 4%
HC Hodogaya Chemical Co.: 3 patents #2 of 34Top 6%
Overall (1997): #2,411 of 185,788Top 2%
6
Patents 1997

Issued Patents 1997

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
5672756 Triphenylamine compound for use in electrophotographic photoconductors Tomoyuki Shimada, Masaomi Sasaki, Tamotsu Aruga, Mitsutoshi Anzai, Akihiro Imai 1997-09-30
5656401 Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds Yohta Sakon, Toshihiko Takahashi, Chihaya Adachi, Kazukiyo Nagai 1997-08-12
5631404 Diamine compounds for use in electrophotographic photoconductors Mitsutoshi Anzai, Yasuo Murakami, Atsushi Takesue, Masaomi Sasaki, Tomoyuki Shimada +1 more 1997-05-20
5610309 Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds Yohta Sakon, Toshihiko Takahashi, Chihaya Adachi, Kazukiyo Nagai 1997-03-11
5604065 Electrophotographic photoconductor and triphenylamine compound for use therein Tomoyuki Shimada, Masaomi Sasaki, Tamotsu Aruga, Mitsutoshi Anzai, Akihiro Imai 1997-02-18
5597925 Method of producing oxadiazole compounds Yohta Sakon, Toshihiko Takahashi, Chihaya Adachi, Kazukiyo Nagai 1997-01-28