Retificação
#15.3
01/10/1989
RPI 951
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Official data from INPI
INVENCAO DE PROCESSO,EQUIPAMENTO E MATERIAIS DESTINADOS A MELHORAR CARACTERISTICAS DE AGENTES DE FRATURAMENTO PARA UTILIZAR EM POCOS DE PETROLEO
Em AnáliseInvention Patent
Application data
Number
PI8400416Type
Invention Patent
Filing
01/31/1984
Publication
09/03/1985
Progress at the INPI
- Filing01/31/84
- Publication
- Examination
- Allowance
- Grant
- In force
The application was filed at the INPI on 01/31/1984. It awaits formal examination and publication in the RPI gazette.
Latest action published by the INPI: 01/10/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
SODEFIM SOCIEDADE DESENVOLVIME [BR]
Inventors
A. D. (pessoa física)
S. J. (pessoa física)
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Pedido de certificado de adição de invenção
#5.1
04/22/1986
RPI 809
Solicitação de exame técnico
#4.1
12/17/1985
RPI 791
Publicação do pedido de patente
#3.1
09/03/1985
RPI 776
Pedido de patente depositado
#2.1
04/17/1984
RPI 704
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