HN

Hiroaki Nakagawa

MI Mitsui Petrochemical Industries: 16 patents #19 of 1,024Top 2%
HH Hitachi High-Technologies: 9 patents #300 of 1,917Top 20%
MC Mitsui Chemicals: 4 patents #512 of 2,279Top 25%
SC Sekisui Chemical Co.: 2 patents #358 of 908Top 40%
SC Sumitomo Bakelite Co.: 2 patents #227 of 790Top 30%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
TC Toyobo Co.: 1 patents #227 of 498Top 50%
NC Nakano Vinegar Co.: 1 patents #24 of 63Top 40%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
Overall (All Time): #94,357 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
5028702 Dust-proof film Muneyuki Matsumoto 1991-07-02
4996106 Pellicle Hitomi Matsuzaki 1991-02-26
4828640 Method of producing films using a peeling jig Toshio Kaya, Makoto Fujimoto 1989-05-09
4812279 Process for preparation of cellulose ester films Masahiro Kondo, Noriake Ohishi 1989-03-14
4355190 Process for recovery of resorcinol from aqueous resorcinol solution containing hydroquinone Hirohiko Nambu, Fujihisa Matsunaga 1982-10-19
4339615 Process for producing resorcinol Ichiro Imai, Fujihisa Matsunaga, Masayasu Isibasi, Tohru Taguchi 1982-07-13
4283567 Method for recovering resorcinol Hirohiko Nambu, Masayasu Isibasi 1981-08-11
4283570 Process for preparing resorcinol Noriyuki Hirowatari, Takayuki Nakamura 1981-08-11
4267387 Process for preparation of aromatic hydroperoxides Ichiro Imai, Isao Hashimoto, Keiji Suzuki 1981-05-12
4239921 Process for purification of crude resorcinol Isao Hashimoto, Toru Taguchi, Hirohiko Nambu 1980-12-16
4192958 Method for recovering resorcinol Isao Hashimoto, Hirohiko Nambu 1980-03-11