Solicitação de exame técnico
#4.1
12/08/1987
RPI 894
Application data
Number
PI8606025Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 12/08/1987. We update with every new RPI gazette, published weekly.
Applicants
Y. L. (pessoa física)
CN
Inventors
Y. L. (pessoa física)
CN
IPC Classification
Priority claims
GB
8604566 · 02/25/1986
JP
60-265910 · 11/26/1985
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
12/08/1987
RPI 894
#3.1
09/15/1987
RPI 882
#2.1
04/22/1987
RPI 861
#21.1
Patente extinta em 08/12/2001
07/22/2008
RPI 1959
#16.1
10/27/1992
RPI 1143
#13.1
06/09/1992
RPI 1123
#9.1
02/04/1992
RPI 1105
#7.1
05/28/1991
RPI 1069
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.