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U. 3. patent 2,329,074, covering DDT and analogous compounds granted 
September 7, 1943 to Ifciller and assigned to J. R. Geigy A. G., Basel, 
Switzerland* 
On August 25, 1942 Belgian patent 446,935 was granted E. Merok 
(255) • This patent oovers insecticides consisting of diphenylethanes 
oT'aiphenyl ethylenes of the general formula (RR»X)C-C-(X»Cl2), where 
R and R* are phenyl or substituted phenyl radicals, and X and X* are 
nydrogen or chlorine or are eliminated with formation of a double 
bond between the two aliphatic carbon atoms. In January 1946, it was 
reported that Geigy Company, Inc, New York, were negotiating agree- 
ments for licensing of inseotioide firms under U. S. Patent No. 
2,329,074, which covers the sale of ODT-containing insecticides. The 
licenses are nonexclusive and nontransferable, and besides involving 
a royalty payment of 5 percent of the net sales price also provide 
that any improvements developed in the use and application of TOT in- 
secticides by the lioensor shall become the property of the Geigy 
C ompany • —Anon • ( 5) • 
Trade-Marks 
The Monsanto Chemical Company announced on March 20, 1945 that it 
would market DDT under the name "Santobane* and if formulations of DDT 
are produced the same term will be used and with it an identifying 
letter or number. At present Monsanto makes only the basic chemical. 
Volume production was begun September 1944.— Anon. (42). 
The following symbols and names have been used to designate DDT or 
compositions containing itt GNB, GNB-A, GNB-A-DDT, Anofex, DeDeTane, 
DeDiTox, Gesarol, Guesarol, Gesapon, Guesapon, Gesarex, Guesarex, Gyron, 
Ixodex, Neocid, and Neocidol. The composition of these is given.— Roark 
(302). 
Some of the preparations containing DDT used in Sweden are Alitox, 
Boxol, and Rotoxol.— Ahlberg and Mathlein (69) • 
DDT IN AEROSOLS 
At the Virginia Truck Experiment Station DDT gave excellent con- 
trol of the larvae of the diamondback moth on kale, collards, and 
broccoli when applied in a very fine mist in combination with methyl 
chloride and oil in a form oommonly referred to as an aerosol. — Walker 
(366 ) . 
Aerosols produced by heat 
Fog generators, invented to screen allied troops, ships, and mili- 
tary installations in World War II, are being used to disperse DDT over 
