Official data from INPI

PILHAS DE OXIDO DE PRATA

ConcedidaInvention Patent

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Application data

Number

PI8108155

Type

Invention Patent

Filing

04/09/1980

Publication

03/09/1982

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Progress at the INPI

Filing04/09/80
Publication03/09/82
Examination08/02/83
Allowance06/26/84
Grant01/29/85
Expired08/19/08

The letters patent expired on 08/19/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SONY EVEREADY INC

Inventors

T. N. (pessoa física)

Technical data

IPC Classification

H01M 4/34

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/29/1985

RPI 745

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

06/26/1984

RPI 714

Solicitação de exame técnico

#4.1

08/02/1983

RPI 667

Notificação de entrada na fase nacional - PCT

#1.3

03/09/1982

RPI 594

Carta-patente expirada

#21.1

Patente extinta em 08/04/96

08/19/2008

RPI 1963

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