Publicação do pedido de patente
#3.1
09/26/1989
RPI 988
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Official data from INPI
ARTIGO POROSO CONTENDO FIBRA DE AMIANTO; PROCESSO PARA PREPARAÇÃO DE UM DIAFRAGMA PARA UTILIZAÇÃO DE UMA PILHA ELETROLÍTICA; DIAFRAGMA DE PILHA CLORO-ALCALINA
PublicadaInvention Patent
Application data
Number
PI8800897Type
Invention Patent
Filing
03/02/1988
Publication
09/26/1989
Progress at the INPI
- Filing03/02/88
- Publication09/26/89
- Examination05/14/91
- Allowance
- Grant
- In force
Published on 09/26/1989, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.
Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
OxyTech Systems, Inc
US
Inventors
A. S. (pessoa física)
US
R. K. (pessoa física)
US
U. K. (pessoa física)
CA
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Pedido de patente depositado
#2.1
05/31/1988
RPI 919
Retificação
#15.3
10/03/1995
RPI 1296
Solicitação de exame técnico
#4.1
05/14/1991
RPI 1067
14.7
01/02/1991
RPI 1048
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