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Official data from INPI

ELETRODO PARA DESPRENDIMENTO DE HIDROGÊNIO E PROCESSO PARA PRODUÇÃO DO MESMO.

ConcedidaInvention Patent

Application data

Number

PI8008538

Type

Invention Patent

Filing

12/29/1980

Publication

-

Progress at the INPI

  1. Filing12/29/80
  2. Publication
  3. Examination10/27/81
  4. Allowance09/06/88
  5. Grant05/30/89
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. K. (pessoa física)

JP

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Inventors

H. S. (pessoa física)

M. Y. (pessoa física)

Technical data

IPC Classification

Priority claims

JP

54-168180 · 12/26/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/30/1989

RPI 971

Notificação para pagamento de retribuição

#13.1

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Exigência - art. 36 da LPI

#6.1

03/15/1988

RPI 908

Conhecimento de parecer técnico

#7.1

08/25/1987

RPI 879

Solicitação de exame técnico

#4.1

10/27/1981

RPI 575

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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