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Official data from INPI

PROCESSO PARA AUMENTAR A VIDA DE RECICLAGEM DE CÉLULA RECARREGÁVEL.

ConcedidaInvention Patent

Application data

Number

PI8105518

Type

Invention Patent

Filing

08/28/1981

Publication

05/18/1982

Progress at the INPI

  1. Filing08/28/81
  2. Publication05/18/82
  3. Examination06/12/84
  4. Allowance01/02/85
  5. Grant10/01/85
  6. Terminated02/04/92

The patent was granted on 10/01/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/01/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Duracell International Inc.

US

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Inventors

B. W. (pessoa física)

D. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

182.912 · 09/02/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/01/1985

RPI 780

Notificação para pagamento de retribuição

#13.1

04/23/1985

RPI 757

Deferimento

#9.1

01/02/1985

RPI 741

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

05/18/1982

RPI 604

Pedido de patente depositado

#2.1

10/06/1981

RPI 572

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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