Concessão da patente
#16.1
11/28/1989
RPI 997
Application data
Number
PI8305898Type
Filing
Publication
The patent was granted on 11/28/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
W. R. Grace & Co.
US
Inventors
H. S. (pessoa física)
US
J. W. (pessoa física)
US
N. B. (pessoa física)
US
T. O. (pessoa física)
US
IPC Classification
Priority claims
US
461.638 · 01/31/1983
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