Carta-patente expirada
#21.1
Patente extinta em 14/10/2011
06/11/2013
RPI 2214
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Official data from INPI
PROCESSO PARA PREPARAÇÃO DE UM TERPOLÍMERO FLEXÍVEL DE ESTIRENO, ISOPRENO E BUTADIENO
Arquivada/ExtintaInvention Patent
Application data
Number
PI9104451Type
Invention Patent
Filing
10/14/1991
Publication
06/09/1992
Progress at the INPI
- Filing10/14/91
- Publication06/09/92
- Examination07/19/94
- Allowance10/06/98
- Grant06/15/99
- 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
A. H. (pessoa física)
US
W. H. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
06/15/1999
RPI 1484
Republicação - classificação IPC
#15.11
ALTERADA DE C08F 236/10
12/08/1998
RPI 1457
Deferimento
#9.1
10/06/1998
RPI 1450
Exigência - art. 36 da LPI
#6.1
04/14/1998
RPI 1425
Solicitação de exame técnico
#4.1
07/19/1994
RPI 1233
Publicação do pedido de patente
#3.1
06/09/1992
RPI 1123
Pedido de patente depositado
#2.1
11/19/1991
RPI 1094
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