IY

Iwao Yamai

UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #2,337,293 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4751206 Low thermal expansion ceramic material Toshitaka Oota 1988-06-14
4703023 Process for the production of low-thermal-expansive (ZrO).sub.2 P.sub.2 O.sub.7 ceramic 1987-10-27