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SANKO KAIHATSU KAGAKU KENK

Overview
  • Total Patents
    100
About

SANKO KAIHATSU KAGAKU KENK has a total of 100 patent applications. Its first patent ever was published in 1977. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets organic fine chemistry, macromolecular chemistry and polymers and textiles and paper are GRAESSER SALICYLATES LTD, SUZHOU FORNANO ELECTRONIC TECH CO LTD and RENFAG SA.

Patent filings per year

Chart showing SANKO KAIHATSU KAGAKU KENKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Saito Toranosuke 62
#2 Ishibashi Takashi 19
#3 Saitou Toranosuke 18
#4 Oda Shigeru 15
#5 Ooishi Hiroyuki 13
#6 Ohishi Hiroyuki 12
#7 Kitani Masakatu 11
#8 Kitani Masakatsu 10
#9 Shiozaki Tomoharu 10
#10 Kawabata Eiji 10

Latest patents

Publication Filing date Title
AU6597500A Stably flame-retardant synthetic resin composition
US5705452A Sulfonyl compound and thermal-sensitive recording medium using the same
US5248828A Method for preparing sulfones
US5049685A Nuclear substituted salicylic acids and their salts
EP0390945A1 Process for preparing 4,4'''-dihydroxyquater-phenyl or derivatives thereof
JPH02255634A Production of 4,4'''-dihydroxyquaterphenyl or its derivative
JPH02229150A 3,3'-sulfonyl dipropionic acid diallyl ester and production thereof
JPH02204472A Nucleus-substituted salicylic acid and salt thereof
CA1339023C Developer for pressure-sensitive recording sheets, aqueous dispersion of the developer and method for preparing the developer
JPH02142747A Nucleus-substituted salicylic acid and salt thereof
JPH02122977A Color developer
US4973720A Process for the preparation of p-benzoquinone
JPH0285231A Nuclear substituted salicylic acid and salt thereof and production of same salt
JPH01186865A Biscitraconimide compound and production thereof
EP0275107A2 An aqueous developer dispersion for a pressure-sensitive recording sheet and a process for producing the same
JPH01172361A Production of 4-acyloxy-4'-brombiphenyl
JPH01145189A Color developer for pressure-sensitive recording paper, aqueous dispersant of the same, and preparation thereof
JPS63255259A Production of asymmetric sulfone
JPS63250362A Production of diaryl sulfone
JPS63173680A Water dispersion of color developer for pressure-sensitive recording paper and manufacture thereof