| 7485723 |
Process for making trisaryl triazine UV absorbers using Lewis acids and reaction promoters |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2009-02-03 |
| 6900314 |
Process for making triazine UV absorbers using lewis acids and reaction promoters |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2005-05-31 |
| 6867250 |
Non-yellowing ortho-dialkyl aryl substituted triazine ultraviolet light absorbers |
Ram B. Gupta, Hargurpreet Singh, Mark Paterna, Al Wagner |
2005-03-15 |
| 6855269 |
Phenyl ether-substituted hydroxyphenyl triazine ultraviolet light absorbers |
Ram B. Gupta, Hargurpreet Singh |
2005-02-15 |
| 6800757 |
Red-shifted triazine ultravioletlight absorbers |
Ram B. Gupta, Hargurpreet Singh |
2004-10-05 |
| 6730785 |
Process for making triazine UV absorbers using lewis acids and reaction promoters |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2004-05-04 |
| 6710177 |
Process for making triazine UV absorbers using Lewis acids and reaction promoters |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2004-03-23 |
| 6632944 |
Process for isolation of monophenolic-bisaryl triazines |
Ram B. Gupta, Hargurpreet Singh |
2003-10-14 |
| 6486316 |
Process for making triazine UV absorbers using Lewis acids and reaction promoters |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2002-11-26 |
| 6486317 |
Process for making 2-hydroxy-4-alkoxyphenyl or 2,4-dihydroxyphenyl substituted 1,3,5-triazine UV absorbers |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2002-11-26 |
| 6297378 |
Process for making 2-(2-hydroxy-4-alkoxyphenyl)-4,6-bisaryl-1,3,5-triazines |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2001-10-02 |
| 6225468 |
Process for making 2-(2,4,-dihydroxyphenyl) or 2-(2,4-dialkoxyphenyl)-4,6-bisaryl-1,3,5-triazines |
Ram B. Gupta, Dennis Jakiela, Sampath Venimadhavan, Venkatrao K. Pai |
2001-05-01 |