Publicação do pedido de patente
#3.1
02/17/1988
RPI 904
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Application data
Number
PI8702339Type
Invention Patent
Filing
05/08/1987
Publication
02/17/1988
Progress at the INPI
- Filing05/08/87
- Publication02/17/88
- Examination10/16/90
- Allowance08/24/93
- Grant04/26/94
- Expired07/29/08
The letters patent expired on 07/29/2008: 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: 02/17/1988. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Kenrich Petrochemicals, Inc
US
Kenrich Petrochemicals, Inc.
US
Inventors
G. S. (pessoa física)
US
S. M. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Pedido de patente depositado
#2.1
08/04/1987
RPI 876
Carta-patente expirada
#21.1
Patente extinta em 08/05/2002
07/29/2008
RPI 1960
Concessão da patente
#16.1
04/26/1994
RPI 1221
Deferimento
#9.1
08/24/1993
RPI 1186
Exigência - art. 36 da LPI
#6.1
01/19/1993
RPI 1155
Solicitação de exame técnico
#4.1
10/16/1990
RPI 1037
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