Concessão da patente
#16.1
11/28/1989
RPI 997
Application data
Number
PI8306673Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Ashland Oil Inc.
US
Inventors
T. R. (pessoa física)
US
IPC Classification
Priority claims
US
450.826 · 12/20/1982
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