Publicação do pedido de patente
#3.1
11/21/1989
RPI 996
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Official data from INPI
Célula eletrolítica do tipo de diafragma
PublicadaInvention Patent
Application data
Number
PI8901710Type
Invention Patent
Filing
04/11/1989
Publication
11/21/1989
Progress at the INPI
- Filing04/11/89
- Publication11/21/89
- Examination04/16/91
- Allowance05/27/97
- Grant07/28/98
- Expired12/26/12
The letters patent expired on 12/26/2012: 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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
OxyTech Systems, Inc
US
Inventors
L. C. (pessoa física)
US
R. R. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Pedido de patente depositado
#2.1
05/23/1989
RPI 970
Carta-patente expirada
#21.1
Patente extinta em 11/04/2009
12/26/2012
RPI 2190
Concessão da patente
#16.1
07/28/1998
RPI 1440
Deferimento
#9.1
05/27/1997
RPI 1382
Exigência - art. 36 da LPI
#6.1
08/13/1996
RPI 1341
Solicitação de exame técnico
#4.1
02/11/1992
RPI 1106
Solicitação de exame técnico
#4.1
04/16/1991
RPI 1063
14.7
01/29/1991
RPI 1052
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