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Toyotsugu Hatagawa

Sumitomo Electric Industries: 4 patents #6,367 of 21,551Top 30%
Overall (All Time): #1,295,353 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5371343 Heating cooking device having a wave guide and feeder port disposed perpendicular to a rotary table Hirofumi Yoshimura, Yuji Hayakawa, Mitsuo Akiyoshi 1994-12-06
5015812 Oven with an exhaust opening for collecting vapors to control material heating Isao Kasai, Kimiaki Yamaguchi, Shinichi Sakai, Susumu Murakami, Tatsuji Isono 1991-05-14
4686356 Heating appliance with internal non-volatile memory Shigeki Ueda, Isao Kasai 1987-08-11
4499356 Microwave heater having a device for thawing frozen cakes 1985-02-12