Learn more

RIEDEL DE HAEN AG

Overview
  • Total Patents
    636
About

RIEDEL DE HAEN AG has a total of 636 patent applications. Its first patent ever was published in 1939. It filed its patents most often in Germany, EPO (European Patent Office) and Japan. Its main competitors in its focus markets organic fine chemistry, basic materials chemistry and measurement are JIANGSU YONGAN CHEMICAL CO LTD, CHEMICAL TECH ACADEMY OF SHANDONG PROVINCE and TIANJIN FENGCHUAN CHEMICAL REAGENT CO LTD.

Patent filings per year

Chart showing RIEDEL DE HAEN AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Scholz Eugen 21
#2 Lindner Wolfgang Dr 19
#3 Heymons Dr Albrecht 18
#4 Taschenbrecker Erich 17
#5 Krampitz Horst 17
#6 Hirschberg Rudolf Dr 15
#7 Lindner Wolfgang 13
#8 Scholz Eugen Dr 13
#9 Bartels Guenter 13
#10 Schulz Joachim 13

Latest patents

Publication Filing date Title
DE19802588A1 Luminescent fiber useful for security making of textiles, documents and papers
AU5762898A Process for preparing lithium and manganese oxides
DE19719720A1 Process for reducing the metal ion content in a chemical compound with dipole moment
DE19651351A1 Microbicidal mixtures
DE19649662A1 Laminated body with afterglow properties, process for its production and its use
DE19641890A1 Microbicidal formulation to protect plastic, leather, wood and paper
DE19548710A1 Preservative containing isothiazolinone derivatives and complexing agents
DE19543097A1 Algicide combination products for the preservation of technical materials
DE19527284A1 Process for the production of a non-ferrous metal carboxylate
DE19526499A1 Merocyanine dyes useful as photographic red sensitisers without discoloration
EP0699623A1 Transport or storage container having a programmable data carrier
DE19510951A1 Trinuclear merocyanine dyes useful for improved red sensitisation
DE4426892A1 Use of indolenine cyanine disulfonic acid derivatives
DE4421453A1 Karl Fischer reagent
DE4413893A1 Use of indolenine cyanine dyes
DE4339248A1 Storage-stable aqueous solutions of isothiazolin-3-ones
DE4329287A1 Use of N-methylformamide as a solvent for the Karl Fischer titration
EP0556624A2 Ampoule for liquids
DE4239115A1 Use of a solution containing bound bromine as a titrant component for water determination
DE4230717A1 Method and reagent for quantitative water determination