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MASAYUKI ISHIKAWA

Overview
  • Total Patents
    108
About

MASAYUKI ISHIKAWA has a total of 108 patent applications. Its first patent ever was published in 1965. It filed its patents most often in Japan, United States and Canada. Its main competitors in its focus markets organic fine chemistry, pharmaceuticals and materials and metallurgy are FAMILIES OF SPINAL MUSCULAR ATROPHY, MERCURY THERAPEUTICS INC and ITALIANA SCHOUM SPA.

Patent filings per year

Chart showing MASAYUKI ISHIKAWAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ishikawa Masayuki 88
#2 Eguchi Masao 46
#3 Tanaka Hiromichi 44
#4 Kobayashi Masahiko 38
#5 Takashima Yoshimi 36
#6 Itou Shigeru 31
#7 Sugimoto Akiko 21
#8 Ebisawa Hisashi 20
#9 Moriguchi Soyao 20
#10 Eguchi Yukuo 17

Latest patents

Publication Filing date Title
JP2004105121A Method for synthesizing cell-free protein
JPH08141139A Go problem practicing apparatus
JPH07119171A Invert block manhole
JPH0358975A 5-nitrophthalazinone derivative
JPS6251672A Novel 2-(4-phenyl-1-piperazinyl alkyl)-aminopyrimidine derivative and acid addition salt thereof
JPS5823678A Novel 3-phenyl-4-quinazolone derivative
JPS57212178A Novel 2,4(1h,3h)-quinazolinedione derivative
JPS57206665A Novel 2,4(1h,3h)-quinazolinedione derivative
JPS57200337A Novel 2-acylaniline derivative
JPS57200367A Novel 2(1h)-quinazolinone derivative
JPS57197269A Novel 2,4-(1h,3h)-quinazolinedione derivative
EP0040793A1 Novel quinazoline-dione compounds, process for production thereof and pharmaceutical use thereof
CA1161036A Quinazoline-dione compounds, process for production thereof and pharmaceutical use thereof
JPS57154149A Novel o-nitrobenzoic acid derivative and its preparation
JPS57118570A Novel 3-phenyl-4-quinazolone derivative
JPS57109752A Novel 4-amino-2,6-dialkyl-3-nitrobenzoic acid alkyl ester derivative
JPS57109751A Novel 4-amino-2,6-dialkylbenzoic acid alkyl ester derivative
JPS5735573A Novel 3-alkyl substituted 2,4(1h,3h)-quinazolinedione derivative
JPS5731670A Novel 2,4 1h, 3h -quinazolinedione derivative
JPS5728067A 2,4 1h,3h -quinazolinedione derivative