Carta-patente expirada
#21.1
Patente extinta em 28/09/2010
05/21/2013
RPI 2211
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Official data from INPI
COMPOSIÇÃO DE POLÍMERO, E, PROCESSO PARA A FABRICAÇÃO DE UM POLÍMERO AROMÁTICO DE POLIARILSULFONA
Arquivada/ExtintaInvention Patent
Application data
Number
PI9004886Type
Invention Patent
Filing
09/28/1990
Publication
09/10/1991
Progress at the INPI
- Filing09/28/90
- Publication09/10/91
- Examination11/03/93
- Allowance09/29/98
- Grant02/23/99
- Expired05/21/13
The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
ICI Composites, Inc.
US
Imperial Chemical Industries Limited
GB
Imperial Chemical Industries Plc.
GB
Inventors
J. C. (pessoa física)
GB
P. M. (pessoa física)
GB
Technical data
IPC Classification
Priority claims
GB
8921999.2 · 09/29/1989
GB
9006435.3 · 03/22/1990
GB
9020258.1 · 09/17/1990
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
02/23/1999
RPI 1468
Deferimento
#9.1
DEFERIDO DE ACORDO COM O QUE INCIDIR NO ARTIGO 229 DA LPI N° 9279 DE 14/05/96
09/29/1998
RPI 1449
Republicação - titular
#25.11
10/07/1997
RPI 1401
Transferência deferida
#25.1
08/19/1997
RPI 1394
Exigência - art. 36 da LPI
#6.1
12/12/1995
RPI 1306
Solicitação de exame técnico
#4.1
11/03/1993
RPI 1196
Publicação do pedido de patente
#3.1
09/10/1991
RPI 1084
Pedido de patente depositado
#2.1
04/02/1991
RPI 1061
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