YN

Yukio Nakako

IC Idemitsu Kosan Co.: 5 patents #272 of 1,237Top 25%
KS Kobe Steel: 5 patents #135 of 2,031Top 7%
NC Nippon Brown Coal Liquefaction Co.: 4 patents #2 of 15Top 15%
AL Asia Oil Company Limited: 4 patents #2 of 12Top 20%
MC Mitsubishi Chemical: 4 patents #68 of 716Top 10%
KS Kobe Steel: 3 patents #455 of 1,773Top 30%
MK Mitsubishikaseikogyo Kabushiki Kaisha: 1 patents #6 of 49Top 15%
Overall (All Time): #671,095 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
4818374 Process for converting coal to an oil fraction Nobuyoshi Hirokoh, Yoichi Kageyama, Tetsuo Matsumura 1989-04-04
4750991 Method for hydrogenating a solvent-refined coal Yoichi Kageyama, Hironori Kageyama, Jun Imai 1988-06-14
4737266 Method for hydrogenating a solvent-refined coal Yoichi Kageyama, Hironori Kageyama, Jun Imai 1988-04-12
4565622 Method of liquefying brown coal Tetsuo Matsumura, Toshio Ozawa, Kaizaburo Saito, Shin-ichi Katsushima, Shin-ichi Oya +4 more 1986-01-21
4541914 Process for converting coal Nobuyoshi Hirokoh, Yoichi Kageyama, Tetsuo Matsumura 1985-09-17
4314898 Process for reforming coal Toshio Ohzawa, Shizuo Yokota, Masaaki Tamura 1982-02-09
4219403 Coal liquefaction process and apparatus therefor Shizuo Yokota 1980-08-26
4185395 Method for thermal dehydration of brown coal Kenjiro Motonaga, Junichiro Nada, Toshio Ohzawa, Shizuo Yokota, Haruo Kakunai 1980-01-29