| SEED CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120074352 | WETTABLE HYDROGEL CONTACT LENS AND METHOD FOR PRODUCING SAME - Disclosed is a hydrogel contact lens which has improved and long-lasting wettability in the surface and inner structures, while exhibiting excellent contamination resistance, shape stability and mechanical strength. Also disclosed is a method for producing the hydrogel contact lens. The wettable hydrogel contact lens is characterized by containing an ionic hydrophilic polymer which is a compound having a hydroxy group and an anionic group. The method for producing a hydrogel contact lens is characterized in that a constituent component of the hydrogel contact lens is a copolymer containing at least a cationic monomer and an anionic monomer, and in that the method comprises a step wherein counter ions of the monomers form ionic bonds and a step wherein an ionic hydrophilic polymer, which is a compound having a hydroxy group and an anionic group, is contained. | 03-29-2012 |
| 20120022473 | RING-SHAPED DEVICE - The present invention aims to provide a ring-shaped device superior in the wearing comfort and intraocular stability while being worn on the eye. | 01-26-2012 |
| 20110306661 | HYDROGEL CONTACT LENS FOR SUSTAINED DRUG RELEASE AND DRUG RELEASE METHOD USING HYDROGEL CONTACT LENS FOR SUSTAINED DRUG RELEASE - Disclosed is a sustainedly drug-releasing hydrogel contact lens which can sustainedly release an anionic medicament such as an allergy-treating agent in a mildly irritating and effective manner while achieving vision correction. Specifically disclosed is a hydrogel comprising ionic monomers composed of at least a cationic monomer and an anionic monomer, wherein the component ratio of the ionic monomers is 5 to 20 mol % inclusive relative to the total amount of monomers that constitute the gel, and the content of the anionic monomer is 15 to 25 mol % inclusive relative to the content of the cationic monomer. | 12-15-2011 |
