Solicitação de exame técnico
#4.1
01/10/1989
RPI 951
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Official data from INPI
PROCESSO DE PRODUÇÃO DE CELULOSE AMORFA OU DESORDENADA
Em AnáliseInvention Patent
Application data
Number
PI8601489Type
Invention Patent
Filing
04/02/1986
Publication
12/09/1986
Progress at the INPI
- Filing04/02/86
- Publication12/09/86
- Examination01/10/89
- Allowance09/13/94
- Grant04/25/95
- Expired07/22/08
The letters patent expired on 07/22/2008: 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: 01/10/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Board of Regents, The University of Texas System
US
Board Of Regents, The University Of Texas System
US
Inventors
D. B. (pessoa física)
US
M. G. (pessoa física)
US
R. B. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Publicação do pedido de patente
#3.1
12/09/1986
RPI 842
Pedido de patente depositado
#2.1
10/21/1986
RPI 835
Carta-patente expirada
#21.1
Patente extinta em 02/04/2001
07/22/2008
RPI 1959
Concessão da patente
#16.1
04/25/1995
RPI 1273
Notificação para pagamento de retribuição
#13.1
01/17/1995
RPI 1259
Deferimento
#9.1
09/13/1994
RPI 1241
Exigência - art. 36 da LPI
#6.1
07/13/1993
RPI 1180
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