Showa Denko K.k.

Erma Optical Works, Ltd.

Susumu Ishiguro

Shigeru Nakamura

Kozo Shirato

Kazuo Hiraizumi

Tsuyoshi Yamada

Mitsuru Taguchi

Sadao Sumikama

Nobuo Takasu

Masuhiro Komuro

Disclosed herein is a high-sensitivity differential refractometer which is characterized by having a light source disposed outside a housing, a reflecting mirror attached at the end portion thereof to a reflecting mirror-supporting plate connected with the end of a movable plate, said movable plate being so constructed as to rotate around a vertical axis and permit free change of the angle formed between said reflecting mirror-supporting plate and the movable plate, a twisting member disposed inside a lead-in tube and said lead-in tube fastened to a removable case and built in a metallic block inside the housing.

High-sensitivity differential refractometer

A granular filler for liquid chromatography consisting essentially of a porous copolymer of (A) a glycidyl monovinyl ester of glycidyl monovinyl ether and (B) an alkylene glycol divinyl ester with component (A) being crosslinked by component (B) to form a gel copolymer, said copolymer containing in its molecule epoxy groups ascribable to component (A) or modified groups resulting from the ring-opening reaction of the epoxy groups with a modifying compound having a hydrophilic, oleophilic or ion exchangeable group.

Filler for liquid chromatography

Growing community of inventors

Yokohama, Japan

Susumu Ishiguro