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Keishiro Nagao Patents |
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Inventor: Nagao; Keishiro
Address: Ikoma, JP
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5384380 |
Polymerizable compositions and high refractive plastic lens obtained therefrom |
January 24, 1995 |
| A polymerizable composition is provided which is constituted by adding isocyanate by 0.1 to 2 equivalent to the alcoholic hydroxyl group in a mixture dissolving component A prescribed below by 20 to 60 parts by weight to a total of 80 to 40 parts by weight of component B and component |
| 4948896 |
Process for preparing pyridine-2,3-dicarboxylic acid compounds |
August 14, 1990 |
| Improved process for preparing pyridine-2,3-dicarboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.3 are each H, (un)substituted alkyl, or (un)substituted phenyl; R.sup.2 is H, (un)substituted alkyl, (un)substituted phenyl, alkylthio, alkoxy, (un)substitut |
| 4788351 |
Process for the production of 2,3-dichloro-1-propanol |
November 29, 1988 |
| Improved process for the production of 2,3-dichloro-1-propanol in high yield by chlorinating allyl alcohol with chlorine, which is characteristic in that the chlorination reaction proceeds by introducing simultaneously allyl alcohol and chlorine gas and optionally hydrogen chloride gas i |
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