Solicitação de exame técnico
#4.1
10/18/1988
RPI 939
Application data
Number
PI8502131Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 10/18/1988. We update with every new RPI gazette, published weekly.
Applicants
The Dow Chemical Company
US
Inventors
C. E. (pessoa física)
US
R. J. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/18/1988
RPI 939
#3.1
12/09/1986
RPI 842
#2.1
07/09/1985
RPI 768
#21.1
Patente extinta em 30/04/2000
07/15/2008
RPI 1958
#16.1
05/26/1992
RPI 1121
12/03/1991
RPI 1096
#13.1
06/25/1991
RPI 1073
#9.1
03/12/1991
RPI 1058
#6.1
08/14/1990
RPI 1028
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.