Department of Chemestry
Short biography and Publications by Theodor Grethe (1886-1958)
Short biographie
| 1886 | Born on 16. June 1886 in Hamburg |
| 1903 | A-level |
| 1905-1909 | Studies at the University of Göttingen |
| 1909 | PhD with Arthur Kötz in Göttingen |
| 1913 | Preliminary examination as food chemist in Göttingen |
| 1913-1914 | Scientific assistant at the State Chemical Laboratory in Hamburg |
| 1914 | Examination as food chemist in Hamburg, sworn commercial chemist in Hamburg |
| 1914-? | Assistant at the food examination office in Erfurt |
| 1919-1958 | Partner and manager of a commercial laboratory in Hamburg (today: Chemisches Laboratorium Dr. Hermann Ulex) |
| 1958 | died on 18. August 1958 |
Further Information
Alternative name spellings
- Theodor Grethe
- Theodor Carl Wilhelm Grethe
Publications
(Only the publications up to the end of his time at the State Chemical Laboratory until 1914 are included in the overall index of chemistry. On this single page, however, all known writings are listed, since this is not done elsewhere).| Search: Chemistry Dep. / all Hamburg | |
| 1952 | |
| 11 |
Unmittelbarer Schiffsantrieb durch Verbrennungsgase Theodor Grethe Patent: DE 852817 (C) 1952/10/20 |
1950 | |
| 10 |
An Dosen mit Eindrückdeckel angeordneter Öffner Theodor Grethe Patent: DE 1610964 (U) 1950/08/03 |
1940 | |
| 9 |
Verfahren zur Verbesserung von koffeinfreiem oder koffeinarmem Tee Theodor Grethe Patent: DE 694691 (C) 1940/08/06 |
1939 | |
| 8 |
Process for the improvement of tea free from or poor in caffeine and improved decaffeinized tea Theodor Grethe Patent: US 2181549 |
1937 | |
| 7 |
Verfahren zur Herstellung eines Mittels zur Vernichtung von Nagetieren, insbesondere Ratten, aus Meerzwiebeln Theodor Grethe Patent: AT 150631 (B) 1937/09/10 |
1935 | |
| 6 |
Verfahren zur Herstellung von coffeinfreiem bzw. coffeinarmem Tee Theodor Grethe Patent: DE 608245 (C) 1935/01/18 |
| 5 |
Verfahren zur Herstellung von coffeinfreiem bzw. coffeinarmem Tee Theodor Grethe Patent: DE 621557 (C) 1935/11/09 |
1933 | |
| 4 |
Verfahren zur Herstellung von coffeinfreiem Kaffee oder teinfreiem Tee Theodor Grethe Patent: DE 588644 (C) 1933/11/21 |
1925 | |
| 3 |
Bestimmung
von Benzoesäure im Eigelb (Determination of benzoic acid in egg yolk) Theodor Grethe Zeitschrift für Untersuchung der Nahrungs- und Genußmittel, sowie der Gebrauchsgegenstände 49, 51-52 (1925) |
1914 | |
| 2 |
Zur Kenntnis des Oxy-cholesterins und seiner Digitonin-Verbindung (Hydroxycholesterol and its digitonin compound) Isaac Lifschütz, Theodor Grethe Berichte der Deutschen Chemischen Gesellschaft 47, 1453-1459 (1914) |
1909 | |
| 1 |
Über das α-β-Cyclohexenon oder Δ-1,5-Dihydrophenol Theodor Grethe (= Theodor Carl Wilhelm Grethe) -/- Supervisors: Arthur Kötz Dissertation, Göttingen (1909) |