Publicação do pedido de patente
#3.1
04/18/1989
RPI 965
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Official data from INPI
PROCESSO PARA PREPARAR UMA DISPERSÃO AQUOSA DE POLÍMERO ISENTA DE AGENTE TENSO-ATIVO
PublicadaInvention Patent
Application data
Number
PI8804743Type
Invention Patent
Filing
09/14/1988
Publication
04/18/1989
Progress at the INPI
- Filing09/14/88
- Publication04/18/89
- Examination07/16/91
- Allowance09/08/98
- Grant12/29/98
- Expired12/18/12
The letters patent expired on 12/18/2012: 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: 04/18/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Polyvinyl Chemie Holland BV
NL
Zeneca Resins B.V
NL
Inventors
G. O. (pessoa física)
NL
H. G. (pessoa física)
NL
Technical data
IPC Classification
Priority claims
GB
8721538 · 09/14/1987
GB
8821515 · 09/14/1988
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Pedido de patente depositado
#2.1
02/14/1989
RPI 956
Carta-patente expirada
#21.1
Patente extinta em 29/12/2008
12/18/2012
RPI 2189
Concessão da patente
#16.1
12/29/1998
RPI 1460
Deferimento
#9.1
DEFERIDO DE ACORDO COM O ARTIGO 229 DA LEI N° 9279 DE 14/05/96
09/08/1998
RPI 1446
Exigência - art. 36 da LPI
#6.1
03/31/1998
RPI 1423
14.7
07/09/1996
RPI 1336
14.4
10/17/1995
RPI 1298
14.4
10/10/1995
RPI 1297
Solicitação de exame técnico
#4.1
07/16/1991
RPI 1076
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