Concessão da patente
#16.1
05/12/1981
RPI 551
Progress at the INPI
- Filing07/30/74
- Publication
- Examination
- Allowance
- Grant05/12/81
- Expired11/17/92
The letters patent expired on 11/17/1992: 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: 05/12/1981. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
H. K. (pessoa física)
JP
Inventors
E. B. (pessoa física)
Technical data
IPC Classification
No IPC classification.
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Carta-patente expirada
#21.1
11/17/1992
RPI 1146
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