Juro Wada: Spectacles provided with a magnifier having an automatic focusing function. Watson Cole Grindle & Watson, September 12, 1989: US04865438 (26 worldwide citation)

Spectacles provided with a magnifier, in which magnifier elements are mounted on a body of spectacles, a distance to an object to be seen is measured, a movable lens encased in the magnifier element is controlled and driven forward or backward along an optical axis on the basis of the result of the ...

Juro Wada, Toshinari Itaoka: Contrast composition for angiography. Juro Wada, Cushman Darby & Cushman, August 25, 1981: US04285928 (19 worldwide citation)

A contrast composition for angiography comprising an emulsion containing an organic iodine compound as X-ray contrast agents and a perfluorocarbon compound having oxygen carrying ability.