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Official data from INPI

Composição para formação de um separador de baterial, separador de bateria e aperfeiçoamento em um sistema de bateria alcalina.

ConcedidaInvention Patent

Application data

Number

PI8002539

Type

Invention Patent

Filing

04/25/1980

Publication

-

Progress at the INPI

  1. Filing04/25/80
  2. Publication
  3. Examination07/13/82
  4. Allowance08/11/87
  5. Grant04/26/88
  6. Terminated02/04/92

The patent was granted on 04/26/1988 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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W.R. Grace & Co.

US

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Inventors

L. J. (pessoa física)

L. C. (pessoa física)

Technical data

IPC Classification

Priority claims

US

46.990 · 06/08/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

07/26/1983

RPI 666

Solicitação de exame técnico

#4.1

07/13/1982

RPI 612

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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