15.17
02/08/1989
RPI 955
Application data
Number
PI8606858Type
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: 02/08/1989. We update with every new RPI gazette, published weekly.
Applicants
Hydril Company
US
Inventors
J. R. (pessoa física)
US
S. L. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
02/08/1989
RPI 955
08/23/1988
RPI 931
#4.1
08/23/1988
RPI 931
#1.3
11/03/1987
RPI 889
#21.1
Patente extinta em 22/08/2001
07/22/2008
RPI 1959
#16.1
10/29/1991
RPI 1091
#13.1
06/25/1991
RPI 1073
#9.1
03/12/1991
RPI 1058
#6.1
10/02/1990
RPI 1035
#6.1
04/10/1990
RPI 1013
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.