Yokoyama; Yuuichi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Yokoyama; Yuuichi.The latest application filed is for "material for contact lens and contact lens prepared therefrom".
- Yokoyama; Yuuichi - Kounosu JP
- Yokoyama; Yuuichi - Tokyo JP
- Yokoyama; Yuuichi - Kunitachi JP
| Patent | Date |
|---|---|
| Material for contact lens and contact lens prepared therefrom Grant 5,623,002 - Nomura , et al. April 22, 1 | 1997-04-22 |
| Process for producing cyanopsia-correctable intraocular lens Grant 5,374,663 - Daicho , et al. December 20, 1 | 1994-12-20 |
| Contact lens material and contact lens Grant 5,264,465 - Futamura , et al. November 23, 1 | 1993-11-23 |
| Contact lens Grant 5,194,542 - Iwamoto , et al. March 16, 1 | 1993-03-16 |
| Oxygen-permeable hard contact lens material with excellent impact resistance Grant 5,023,305 - Onozuka , et al. June 11, 1 | 1991-06-11 |
| Soft contact lens Grant 4,650,843 - Yokoyama , et al. March 17, 1 | 1987-03-17 |
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