KN

Kazuyuki Nitta

TC Tokyo Ohka Kogyo Co.: 31 patents #29 of 684Top 5%
DC Daito Chemix: 1 patents #6 of 27Top 25%
Overall (All Time): #113,982 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 26–32 of 32 patents

Patent #TitleCo-InventorsDate
5856058 Chemical-sensitization positive-working photoresist composition Kazufumi Sato, Akiyoshi Yamazaki, Yoshika Sakai, Toshimasa Nakayama 1999-01-05
5854357 Process for the production of polyhydroxstyrene Mitsuru Sato, Akiyoshi Yamazaki, Etsuko Iguchi, Yoshika Sakai, Kazufumi Sato +1 more 1998-12-29
5817444 Positive-working photoresist composition and multilayered resist material using the same Kazufumi Sato, Akiyoshi Yamazaki, Yoshika Sakai, Toshimasa Nakayama 1998-10-06
5800964 Photoresist composition Mitsuru Sato, Hideo Hada, Tatsuya Hashiguchi, Hiroshi Komano, Toshimasa Nakayama 1998-09-01
5770343 Positive-working photoresist composition Kazufumi Sato, Akiyoshi Yamazaki, Yoshika Sakai, Toshimasa Nakayama 1998-06-23
5736296 Positive resist composition comprising a mixture of two polyhydroxystyrenes having different acid cleavable groups and an acid generating compound Mitsuru Sato, Akiyoshi Yamazaki, Etsuko Iguchi, Yoshika Sakai, Kazufumi Sato +1 more 1998-04-07
5728504 Positive photoresist compositions and multilayer resist materials using the same Hiroshi Hosoda, Satoshi Niikura, Atsushi Sawano, Tatsuya Hashiguchi, Hidekatsu Kohara +1 more 1998-03-17