CHEMISCHE WERKE WITTEN has a total of 22 patent applications. Its first patent ever was published in 1959. It filed its patents most often in Belgium, United Kingdom and United States. Its main competitors in its focus markets organic fine chemistry, macromolecular chemistry and polymers and chemical engineering are OTDEL I KHIM FIZ AKADEMII NAUK, MASATAKA AMAGASA and HONSHU CHEMICAL IND.
# | Country | Total Patents | |
---|---|---|---|
#1 | Belgium | 7 | |
#2 | United Kingdom | 6 | |
#3 | United States | 6 | |
#4 | Netherlands | 2 | |
#5 | Switzerland | 1 |
# | Name | Total Patents |
---|---|---|
#1 | Ewald Katzschmann | 2 |
#2 | Rudolf Burichardt | 1 |
#3 | Schade Gerhard Dr | 1 |
#4 | Rudolf Burkhardt | 1 |
#5 | Willi Fett | 1 |
#6 | Blumenfeld Georg Dr | 1 |
#7 | Rudolf Junghaehnel | 1 |
Publication | Filing date | Title |
---|---|---|
GB1205542A | Process for the preparation of diphenyl terephthalate | |
US3135787A | Process for producing pure sodium salts of 5-sulfo-isophthalic acid and 2-sulfoterephthalic acid | |
US3152055A | Process for the production of aromatic chlorocarboxylic acid chlorides |