Exigência - art. 36 da LPI
#6.1
08/15/1989
RPI 982
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Official data from INPI
PROCESSO PARA PREPARAR DERIVADO DE POLISSARÍDEO CONTENDO ALDEÍDO.
Em ExigênciaInvention Patent
Application data
Number
PI8503957Type
Invention Patent
Filing
08/19/1985
Publication
06/03/1986
Progress at the INPI
- Filing08/19/85
- Publication06/03/86
- Examination09/02/86
- Allowance03/13/90
- Grant10/30/90
- Expired07/15/08
The letters patent expired on 07/15/2008: 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: 08/15/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
N. C. (pessoa física)
US
National Starch And Chemical Investment Rolding Corporation
US
Inventors
D. S. (pessoa física)
US
M. T. (pessoa física)
US
P. J. (pessoa física)
US
Technical data
IPC Classification
Priority claims
US
641.820 · 08/17/1984
US
758.634 · 07/24/1985
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Solicitação de exame técnico
#4.1
09/02/1986
RPI 828
3.4
07/15/1986
RPI 821
Publicação do pedido de patente
#3.1
06/03/1986
RPI 815
Pedido de patente depositado
#2.1
10/22/1985
RPI 783
Carta-patente expirada
#21.1
Patente extinta em 19/08/2000
07/15/2008
RPI 1958
Pedido de licença compulsória
#20.1
11/17/1992
RPI 1146
Concessão da patente
#16.1
10/30/1990
RPI 1039
Notificação para pagamento de retribuição
#13.1
07/24/1990
RPI 1025
Deferimento
#9.1
03/13/1990
RPI 1009
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