Concessão da patente
#16.1
09/26/1989
RPI 988
Application data
Number
PI8407250Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.
Applicants
W. M. (pessoa física)
US
W. B. (pessoa física)
US
Inventors
W. M. (pessoa física)
US
W. B. (pessoa física)
US
IPC Classification
Priority claims
US
567.228 · 12/30/1983
US
PCT/ 84/02138 · 12/31/1984
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/26/1989
RPI 988
#13.1
02/21/1989
RPI 957
#9.1
11/01/1988
RPI 941
#6.1
05/03/1988
RPI 915
#4.1
05/13/1986
RPI 812
#1.3
12/24/1985
RPI 792
#21.1
Patente extinta em 31/12/99
07/08/2008
RPI 1957
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.