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Official data from INPI

PILHA METÁLICA DESPOLARIZADA PELO AR E PILHA ELETROQUÍMICA DE ZINCO.

Em AnáliseInvention Patent
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Application data

Number

PI8601709

Type

Invention Patent

Filing

04/16/1986

Publication

12/16/1986
View on INPI

Progress at the INPI

  1. Filing04/16/86
  2. Publication12/16/86
  3. Examination12/06/88
  4. Allowance03/30/93
  5. Grant10/26/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 12/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duracell International Inc

US

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Inventors

J. M. (pessoa física)

US

Technical data

IPC Classification

H01M 12/00

Priority claims

US

726.443 · 04/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/06/1988

RPI 946

Publicação do pedido de patente

#3.1

12/16/1986

RPI 843

Pedido de patente depositado

#2.1

10/29/1986

RPI 836

Carta-patente expirada

#21.1

Patente extinta em 16/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/26/1993

RPI 1195

Notificação para pagamento de retribuição

#13.1

07/20/1993

RPI 1181

Republicação - classificação IPC

#15.11

06/01/1993

RPI 1174

Deferimento

#9.1

03/30/1993

RPI 1165

Exigência - art. 36 da LPI

#6.1

09/29/1992

RPI 1139

Exigência - art. 36 da LPI

#6.1

12/24/1991

RPI 1099

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