Anuidade - prazo legal encerrado
#18.2
06/14/1988
RPI 921
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Official data from INPI
PROCESSO PARA CALCINAR E DESSULFURAR TERMICAMENTE POR AQUECIMENTO,COQUE DE PETROLEO EM BRUTO
Em AnáliseInvention Patent
Progress at the INPI
- Filing03/01/78
- Publication
- Examination
- Allowance11/30/82
- Grant06/28/83
- Terminated06/14/88
The patent was granted on 06/28/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
GREAT LAKES CARBON CORP
Inventors
G. L. (pessoa física)
G. D. (pessoa física)
H. E. (pessoa física)
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
06/28/1983
RPI 662
Notificação para pagamento de retribuição
#13.1
05/10/1983
RPI 655
Deferimento
#9.1
11/30/1982
RPI 632
Republicação - classificação IPC
#15.11
11/23/1982
RPI 631
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