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Official data from INPI

PROCESSO DE OBTENÇÃO DE ANODOS EM FORMA DE GEL PARA CÉLULAS ALCALINAS E CÉLULA ELETROQUÍMICA

Em AnáliseInvention Patent

Application data

Number

PI8502860

Type

Invention Patent

Filing

06/17/1985

Publication

02/25/1986

Progress at the INPI

  1. Filing06/17/85
  2. Publication02/25/86
  3. Examination04/05/88
  4. Allowance06/14/94
  5. Grant03/28/95
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duracell International Inc

US

See this company's full portfolio

Inventors

W. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

621.831 · 06/18/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/05/1988

RPI 911

Publicação do pedido de patente

#3.1

02/25/1986

RPI 801

Pedido de patente depositado

#2.1

08/20/1985

RPI 774

Carta-patente expirada

#21.1

Patente extinta em 17/06/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

10/18/1994

RPI 1246

Deferimento

#9.1

06/14/1994

RPI 1228

Exigência - art. 36 da LPI

#6.1

06/08/1993

RPI 1175

Exigência - art. 36 da LPI

#6.1

11/17/1992

RPI 1146

Exigência - art. 36 da LPI

#6.1

04/21/1992

RPI 1116

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