Carta-patente expirada
#21.1
Patente extinta em 23/01/2012
07/02/2013
RPI 2217
Application data
Number
PI9205629Type
Filing
Publication
PCT
US1992000607 The letters patent expired on 07/02/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 07/02/2013. We update with every new RPI gazette, published weekly.
Applicants
Syngenta Limited
GB
Zeneca Limited
GB
Inventors
P. W. (pessoa física)
US
IPC Classification
Priority claims
US
07/656.394 · 02/14/1991
Abstract
Esta invenção refere-se a um processo para a preparação de 2-nitro-4-(alquilsulfonila de C~ 1~-C~ 4~ tolueno ou 2-nitro-4-(alquilsulfonila de C~ 1~-C~ 4~ etilbenzeno por alquilsulfonilação de 2-nitrotolueno ou 2-nitro etilbenzeno.
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 23/01/2012
07/02/2013
RPI 2217
#25.4
Alterado de: Zeneca Limited
07/20/2004
RPI 1750
#25.7
Alterada a sede do titular conforme requerido na petição nº 019897 de 16/04/2003
07/20/2004
RPI 1750
#16.1
07/27/1999
RPI 1490
#9.1
02/02/1999
RPI 1465
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08/20/1996
RPI 1342
#15.3
02/06/1996
RPI 1314
#4.1
12/06/1994
RPI 1253
#1.3
09/27/1994
RPI 1243
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