Pedido de licença compulsória
#20.1
02/18/1986
RPI 800
Back to search
Official data from INPI
PROCESSO PARA PRODUZIR P-T-BUTILFENOL ALTAMENTO PURO
Em AnáliseInvention Patent
Progress at the INPI
- Filing09/20/76
- Publication
- Examination
- Allowance
- Grant04/27/82
- Terminated09/18/90
The patent was granted on 04/27/1982 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: 02/18/1986. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
GOI CHEM CO LTD
HITACHI CHEMICAL CO LTD
MARUZEN OIL CO LTD
Inventors
I. Y. (pessoa física)
O. H. (pessoa física)
S. T. (pessoa física)
U. M. (pessoa física)
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
04/27/1982
RPI 601
Anuidade - prazo legal encerrado
#18.2
09/18/1990
RPI 1033
Related
Same category
Patent monitoring
Track this patent in real time.
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.