Solicitação de exame técnico
#4.1
03/28/1989
RPI 962
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Official data from INPI
PROCESSO PARA A RECUPERAÇÃO DE UM SOLVENTE AZEOTRÓPICO ALCOÓLICO EM UNIDADES DE OBTENÇÃO DE HIDROXI-ETIL-CELULOSE
Em AnáliseInvention Patent
Application data
Number
PI8700492Type
Invention Patent
Filing
02/04/1987
Publication
08/09/1988
Progress at the INPI
Awaiting grant fee payment- Filing02/04/87
- Publication08/09/88
- Examination03/28/89
- Allowance04/20/93
- Grant
- In force
The application was allowed by the INPI on 04/20/1993. The grant of the letters patent is being processed.
Latest action published by the INPI: 03/28/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
E. C. (pessoa física)
BA, BR
Politeno Indústria e Comércio S.A.
BA, BR
Inventors
E. C. (pessoa física)
BR
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Publicação do pedido de patente
#3.1
08/09/1988
RPI 929
Pedido de patente depositado
#2.1
06/02/1987
RPI 867
Retificação
#15.3
08/31/1993
RPI 1187
Deferimento
#9.1
04/20/1993
RPI 1168
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