Patents French classification

Amphetamine (1) is a very simple phenethylamine, described in the chemical literature as early as 1887 (Edeleano, 1887). Smith, Kline and French (now GSK) filed a patent on the synthesis and use of amphetamine in 1930 (Nabenhauer, 1930), and the enantiomers were assigned in 1932 (Leithe, 1932 V-Braun and Friehmelt, 1933). Not surprisingly, early access to chiral material relied on classical crystallization-based resolutions (Gillingham, 1962 Nabenhaur, 1942). The early, racemic syntheses of amphetamine fall into four major classifications according to the method used to make the C-N bond ... 

An important step forward has been the recent introduction of an international classification system for patents (184). Each British, German, and Australian patent now carries the class and subclass under this system as well as that imder the national classification. As discussed below, under French Patents, this system has been adopted and is now used in France. 

Research in the French patents is a tedious matter. The classification is excessively broad and the patents are frequently erroneously placed many errors in class numbers appear on the printed copies. Some of the classes have more than one hundred volumes. The addition patents must also be covered. 

The Patent Office has available at the Scientific Library typewritten copies of a manual of classification of the French Patent Office (191), In this manual. Class XIV, Chemical arts, has the following subclasses ... 

The international classification system (184) was substituted entirely for the above in the classification of French patents October 1, 1959 (185), after several years, starting January 1,1955, during which both were used. 

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