Carta-patente expirada
#21.1
Patente extinta em 25/09/2011
06/11/2013
RPI 2214
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Official data from INPI
PROCESSO DE OBTENÇÃO DE POLÍMEROS CONTENDO AMINAS ANTIDEGRADANTES QUIMICAMENTE LIGADAS
Arquivada/ExtintaInvention Patent
Application data
Number
PI9104122Type
Invention Patent
Filing
09/25/1991
Publication
06/02/1992
Progress at the INPI
- Filing09/25/91
- Publication06/02/92
- Examination07/26/94
- Allowance08/24/99
- Grant02/22/00
- Expired06/11/13
The letters patent expired on 06/11/2013: 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: 06/11/2013. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
The Goodyear Tire & Rubber Company
US
Inventors
L. W. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
02/22/2000
RPI 1520
Deferimento
#9.1
08/24/1999
RPI 1494
Exigência - art. 36 da LPI
#6.1
12/01/1998
RPI 1456
Solicitação de exame técnico
#4.1
07/26/1994
RPI 1234
3.4
08/18/1992
RPI 1133
Publicação do pedido de patente
#3.1
06/02/1992
RPI 1122
Pedido de patente depositado
#2.1
10/29/1991
RPI 1091
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