Pedido de patente depositado
#2.1
08/08/1989
RPI 981
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Official data from INPI
PROCESSO DE PREPARAÇÃO DE VIDRO FOTOTRÓPICO ALTAMENTE REFRATIVO DE BAIXA DENSIDADE
Prazo de SigiloInvention Patent
Application data
Number
PI8903036Type
Invention Patent
Filing
06/22/1989
Publication
02/06/1990
Progress at the INPI
- Filing06/22/89
- Publication02/06/90
- Examination04/21/92
- Allowance09/26/95
- Grant04/30/96
- Expired12/22/09
The letters patent expired on 12/22/2009: 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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Deutsche Spezialglas Ag
DE
Inventors
D. B. (pessoa física)
DE
R. K. (pessoa física)
DE
Technical data
IPC Classification
Priority claims
DE
38 25 210.4-45 · 07/25/1988
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Carta-patente expirada
#21.1
Patente extinta em 22/06/2004
12/22/2009
RPI 2033
Concessão da patente
#16.1
04/30/1996
RPI 1326
Republicação - classificação IPC
#15.11
10/24/1995
RPI 1299
Deferimento
#9.1
09/26/1995
RPI 1295
Conhecimento de parecer técnico
#7.1
03/14/1995
RPI 1267
Solicitação de exame técnico
#4.1
04/21/1992
RPI 1116
Publicação do pedido de patente
#3.1
02/06/1990
RPI 1005
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