Inventor

ISAOKA SHIN-ICHI

7 patents

Patents

7 patents

US4138446AFeb 6, 1979

Water-soluble high polymers and their preparation

SUMITOMO CHEMICAL CO58 citations94

US4251651AFeb 17, 1981

Amphoteric polyelectrolyte

SUMITOMO CHEMICAL CO81 citations92

US4075183AFeb 21, 1978

Preparation of water-soluble high polymers

SUMITOMO CHEMICAL CO52 citations90

US3969329AJul 13, 1976

Process for producing high molecular weight acrylamide water-soluble polymers by controlling the viscosity of the polymerization reaction medium with a water-miscible organic solvent

SUMITOMO CHEMICAL CO8 citations71

US3957904AMay 18, 1976

Polymeric flocculant composition

SUMITOMO CHEMICAL CO12 citations69

US4221888ASep 9, 1980

Method of hydrolyzing acrylamide and methacrylamide polymers

SUMITOMO CHEMICAL CO6 citations58

US3931122AJan 6, 1976

Method for producing high molecular weight polyacrylamide type resins

SUMITOMO CHEMICAL CO6 citations55