Concessão da patente
#16.1
03/26/1985
RPI 753
Progress at the INPI
- Filing05/31/79
- Publication
- Examination11/30/82
- Allowance08/21/84
- Grant03/26/85
- Expired06/06/95
The letters patent expired on 06/06/1995: 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: 03/26/1985. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
TDK ELECTRONICS CO LTD
Inventors
K. U. (pessoa física)
S. I. (pessoa física)
S. M. (pessoa física)
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação para pagamento de retribuição
#13.1
12/11/1984
RPI 738
Deferimento
#9.1
08/21/1984
RPI 722
Exigência - art. 36 da LPI
#6.1
01/31/1984
RPI 693
6.3
08/23/1983
RPI 670
Republicação - classificação IPC
#15.11
06/07/1983
RPI 659
Exigência - art. 36 da LPI
#6.1
05/31/1983
RPI 658
Solicitação de exame técnico
#4.1
11/30/1982
RPI 632
Carta-patente expirada
#21.1
06/06/1995
RPI 1279
Patent monitoring
Track this patent in real time.
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.