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Score from: | % to: % | Current assig. owns from to patents |
patent | score | priority | expiry | expired | references | current assignee | title |
---|---|---|---|---|---|---|---|
6139616 | 13 | 1997-07-31 | 2018-07-30 | 1 | 22 | Nippon Chemical Indus…; Toho Ganryo Kogyo Co.…; | Rust-preventive pigment composition and rust-preventive paints containing the same |
4334933 | 22 | 1979-05-21 | 1999-12-31 | 1 | 17 | Nippon Chemical Indus…; Toho Ganryo Kogyo Co.…; | Process for preparing stable inorganic pigment |
4100074 | 56 | 1975-08-07 | 1996-08-05 | 1 | 2 | Nippon Chemical Indus…; Toho Ganryo Kogyo Co.…; | Antimony trioxide composition and process of producing the same |
5248337 | 60 | 1990-04-11 | 2011-04-10 | 1 | 3 | Toho Ganryo Kogyo Co., Ltd.; | Stable lead chromate pigment composition and process for producing the same |