20.4
03/11/1986
RPI 803
Back to search
Official data from INPI
FUSIVEL DE ACAO RETARDADA APERFEICOADO
Em AnáliseInvention Patent
Progress at the INPI
- Filing04/16/75
- 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: 03/11/1986. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
SAN O IND CO
Inventors
M. M. (pessoa física)
Technical data
IPC Classification
No IPC classification.
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
20.7
03/04/1986
RPI 802
20.7
02/18/1986
RPI 800
Carta-patente expirada
#21.1
08/03/1993
RPI 1183
Patent monitoring
Track this patent in real time.
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.