DREYFUS GERARD has a total of 13 patent applications. Its first patent ever was published in 1977. It filed its patents most often in France, Belgium and Canada. Its main competitors in its focus markets measurement and electrical machinery and energy are BONAR BRAY LTD, J B T INSTR INC and SCHWEITZER EDMUND O.
# | Country | Total Patents | |
---|---|---|---|
#1 | France | 2 | |
#2 | Belgium | 1 | |
#3 | Canada | 1 | |
#4 | Germany | 1 | |
#5 | Spain | 1 | |
#6 | United Kingdom | 1 | |
#7 | Italy | 1 | |
#8 | Japan | 1 | |
#9 | Netherlands | 1 | |
#10 | African Intellectual Property Organization | 1 | |
#11 | Sweden | 1 | |
#12 | United States | 1 |
# | Industry | |
---|---|---|
#1 | Measurement | |
#2 | Electrical machinery and energy |
# | Technology | |
---|---|---|
#1 | Measuring nuclear radiation | |
#2 | Electric switches | |
#3 | Measuring electric variables |
# | Name | Total Patents |
---|---|---|
#1 | Dreyfus Gerard | 4 |
#2 | Perino Didier | 3 |
#3 | Lewiner Jacques | 3 |
#4 | Deideie Perino | 1 |
#5 | Jiyatsukii Reuinaa | 1 |
#6 | Jierarudo Doreifu | 1 |
Publication | Filing date | Title |
---|---|---|
US4227086A | Detectors of parameters adapted to act on the force of attraction between an electret and an electrode |