Solicitação de exame técnico
#4.1
11/28/1989
RPI 997
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Official data from INPI
PROCESSO PARA PREPARAÇÃO DE DERIVADOS ORGANOESTÂNICOS
Em AnáliseInvention PatentPCT · US1987001746
Application data
Number
PI8707749Type
Invention Patent
Filing
07/17/1987
Publication
08/15/1989
PCT
US1987001746 Progress at the INPI
- Filing07/17/87
- Publication08/15/89
- Examination11/28/89
- Allowance01/18/94
- Grant08/30/94
- 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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
M & T Chemicals, Inc.
US
Inventors
D. R. (pessoa física)
US
G. L. (pessoa física)
NL
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação de entrada na fase nacional - PCT
#1.3
08/15/1989
RPI 982
Carta-patente expirada
#21.1
Patente extinta em 17/07/2002
07/29/2008
RPI 1960
Concessão da patente
#16.1
08/30/1994
RPI 1239
Notificação para pagamento de retribuição
#13.1
05/10/1994
RPI 1223
Deferimento
#9.1
01/18/1994
RPI 1207
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