Pedido de patente depositado
#2.1
07/25/1989
RPI 979
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Official data from INPI
DISPOSIÇÃO DE CHAVE SOBRETUDO PARA TENSÕES MÉDIAS
Prazo de SigiloInvention Patent
Application data
Number
PI8902819Type
Invention Patent
Filing
06/13/1989
Publication
02/01/1990
Progress at the INPI
- Filing06/13/89
- Publication02/01/90
- Examination01/14/92
- Allowance03/04/97
- Grant01/21/98
- 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: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
GEC Alsthom T&D AG
CH
Sprecher Energie AG
CH
Inventors
H. W. (pessoa física)
CH
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Carta-patente expirada
#21.1
Patente extinta em 13/06/2009
12/26/2012
RPI 2190
Concessão da patente
#16.1
01/21/1998
RPI 1413
9.1.3
08/12/1997
RPI 1393
Deferimento
#9.1
03/04/1997
RPI 1370
14.4
07/05/1994
RPI 1231
14.7
07/05/1994
RPI 1231
Conhecimento de parecer técnico
#7.1
07/05/1994
RPI 1231
Solicitação de exame técnico
#4.1
01/14/1992
RPI 1102
Publicação do pedido de patente
#3.1
02/01/1990
RPI 1004
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