MS

Masaomi Sasaki

Ricoh Company: 11 patents #1 of 695Top 1%
HC Hodogaya Chemical Co.: 3 patents #2 of 34Top 6%
Overall (1997): #393 of 185,788Top 1%
11
Patents 1997

Issued Patents 1997

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
5672756 Triphenylamine compound for use in electrophotographic photoconductors Tomoyuki Shimada, Tamotsu Aruga, Masafumi Ohta, Mitsutoshi Anzai, Akihiro Imai 1997-09-30
5672728 Method for preparing the pyrenylamine derivatives Chiaki Tanaka, Tamotsu Aruga, Tomoyuki Shimada, Hiroshi Adachi 1997-09-30
5663407 Electrophotographic photoconductor, carbonate compound for use in the same, and intermediate compound for producing the carbonate compound Tomoyuki Shimada, Chiaki Tanaka 1997-09-02
5641598 Stilbene compound, process for producing same and electrophotographic photoconductor containing same Chiaki Tanaka, Tomoyuki Shimada 1997-06-24
5631404 Diamine compounds for use in electrophotographic photoconductors Mitsutoshi Anzai, Yasuo Murakami, Atsushi Takesue, Tomoyuki Shimada, Tamotsu Aruga +1 more 1997-05-20
5623062 Bisazo compounds as charge generating materials Tomoyuki Shimada 1997-04-22
5616805 Methods for preparing pyrenylamine derivatives and intermediates Chiaki Tanaka, Tamotsu Aruga, Tomoyuki Shimada, Hiroshi Adachi 1997-04-01
5616801 Charge transporting materials and electrophotographic photoconductors using the same Tomoyuki Shimada, Mitsuru Hashimoto, Tamotsu Aruga 1997-04-01
5608010 Polymers of acrylic acid ester derivatives having a triphenyl amine skeleton Hiroshi Tamura, Toshio Fukagai, Naoshi Mishima 1997-03-04
5604065 Electrophotographic photoconductor and triphenylamine compound for use therein Tomoyuki Shimada, Tamotsu Aruga, Masafumi Ohta, Mitsutoshi Anzai, Akihiro Imai 1997-02-18
5599995 Electrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediate Chiaki Tanaka, Tamotsu Aruga, Tomoyuki Shimada, Hiroshi Adachi 1997-02-04