Concessão da patente
#16.1
06/21/1983
RPI 661
The letters patent expired on 11/24/1992: 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: 06/21/1983. We update with every new RPI gazette, published weekly.
Applicants
Nippon Shokubai Kagaku Kogyo Co., Ltd.
JP
Inventors
E. B. (pessoa física)
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/21/1983
RPI 661
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05/10/1983
RPI 655
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11/30/1982
RPI 632
10/06/1981
RPI 572
#21.1
11/24/1992
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