NT

Nobuo Tsukada

SI Seiko Instruments: 5 patents #328 of 1,437Top 25%
SE Seiko Instruments & Electronics: 3 patents #20 of 164Top 15%
Overall (All Time): #592,037 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5254899 Micro-traveller with ultrasonic motor Makoto Suzuki, Ichiro Horikoshi, Fujio Ozawa, Masao Kasuga 1993-10-19
5079470 Standing-wave type ultrasonic motor and timepiece Masao Kasuga, Hiroshi Kitamura 1992-01-07
5056201 Method of making a travelling-wave motor Masao Kasuga, Takayuki Mori 1991-10-15
5043956 Wristwatch with oscillation alarm Kou Yamazaki, Keishi Honmura 1991-08-27
5025186 Ultrasonic motor 1991-06-18
5023853 Electric apparatus with silent alarm Masayuki Kawata 1991-06-11
4721058 Paper cutting unit of automatic drawing machines Mamoru Hayamizu 1988-01-26
4645356 Wristwatch Eiichi Matsuura 1987-02-24
4447163 Stem mechanism for a watch Isamu Nishida 1984-05-08