Concessão da patente
#16.1
08/30/1988
RPI 932
Application data
Number
PI8200428Type
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: 08/30/1988. We update with every new RPI gazette, published weekly.
Applicants
Ashland Oil, Inc
US
Inventors
C. D. (pessoa física)
US
IPC Classification
Priority claims
US
228.304 · 01/26/1981
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