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SEITETSU KAGAKU CO LTD

Overview
  • Total Patents
    704
About

SEITETSU KAGAKU CO LTD has a total of 704 patent applications. Its first patent ever was published in 1964. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets environmental technology, chemical engineering and organic fine chemistry are SHANGHAI DONGHUA ENV ENG CO LTD, ENVIRORESOLUTIONS INC and CMS TECHNOLOGIES HOLDINGS INC.

Patent filings per year

Chart showing SEITETSU KAGAKU CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kawamura Masao 216
#2 Akutsu Seiichi 83
#3 Kato Kunioki 68
#4 Nakamura Morio 63
#5 Nishi Tadaaki 46
#6 Obayashi Shigeji 44
#7 Hata Hiroyuki 42
#8 Takahashi Masahide 39
#9 Fukuda Hirosuke 38
#10 Haruna Kazuo 36

Latest patents

Publication Filing date Title
US5175372A Process of producing high purity bis(4-hydroxyphenyl)sulfides and heat-sensitive recording materials containing the same
US5101049A Novel thiophene derivatives and methods for producing the same
JPH01199158A Red corpuscle conservation liquid
CN1037088A Magnetic therapeutic device
JPH01132351A Liquid seasoning
JPH01242120A Method for removing low concentration readily adsorbable gas from mixed gas and recovering slightly adsorbable gas in high yield
JPH01243942A Improved cacao bean and quality improvement thereof
JPH01243969A Nuts food and production thereof
JPH01243944A Improvement of flavor and eating feel of fried snack confectionery
JPH01236914A Method for recovery of concentrated oxygen
EP0283257A2 Edible composition
JPH01230376A Magnetic treatment machine
JPH01229092A Phosphor composition
JPH01217095A Reversible light shielding material
JPH01211449A Extraction and separation of coffee oil containing aromatic component
JPH01213260A Production of bis(4-hydroxyphenyl)sulfide of high purity
JPH01201364A Moisture-detective water-absorptive composition and water-absorptive molding
EP0279525A1 Blood group substance-carrying latex and process for preparing the same
US4835317A 4-tert.-butyl-1,2-benzenedithiol, complex compounds derived therefrom, and a method of producing the same
JPH01181797A Production of d-threo-3-(3,4-dihydroxyphenyl)serine derivative