18.8
11/21/1989
RPI 996
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Official data from INPI
COMPOSICAO CATALISE PROCESSO PARA PRODUZI-LA E PROCESSO PARA POLIMERIZACAO DE L-OLEFINAS COM A MESMACESSO PARA POLIMERIZACAO DE 1-OLEFINAS COM A MESMA
Em AnáliseInvention Patent
Progress at the INPI
- Filing01/22/75
- Publication
- Examination
- Allowance
- Grant
- Expired08/03/93
The letters patent expired on 08/03/1993: 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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
MATIONAL PETRO CHEMICALS CORP
N. C. (pessoa física)
Inventors
No inventors listed.
Technical data
IPC Classification
No IPC classification.
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Anuidade - prazo legal encerrado
#18.2
08/29/1989
RPI 984
Notificação para pagamento de retribuição
#13.1
01/12/1982
RPI 586
Carta-patente expirada
#21.1
08/03/1993
RPI 1183
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