ZK

Zenzaburo Kawai

IJ Ishikawajima-Harima Jukogyo: 2 patents #81 of 494Top 20%
CC Chichibu Cement Co.: 1 patents #30 of 80Top 40%
KT Kabushiki Kaisha Top: 1 patents #53 of 213Top 25%
📍 Gyōda, JP: #250 of 565 inventorsTop 45%
Overall (All Time): #2,334,507 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4717337 Method for producing white cement clinker Toshikazu Ichiyanagi, Kanzaburo Sudo, Shoji Sekine, Hiroshi Teshigawara 1988-01-05
4573908 Method and apparatus for producing white cement clinker Toshikazu Ichiyanagi, Kanzaburo Sudo, Shoji Sekine, Hiroshi Teshigawara 1986-03-04