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Official data from INPI

DISPOSITIVO ANALISADOR DE GASES DO RELÊ BUCHHOLZ E RESPECTIVA CAIXA

Prazo de SigiloUtility Model

Application data

Number

MU6801577

Type

Utility Model

Filing

07/25/1988

Publication

03/13/1990

Progress at the INPI

  1. Filing07/25/88
  2. Publication03/13/90
  3. Examination04/14/92
  4. Allowance10/19/93
  5. Grant08/30/94
  6. Expired09/25/01

The letters patent expired on 09/25/2001: 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: 03/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Aço Minas Gerais S/A - Açominas

MG, BR

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Inventors

C. C. (pessoa física)

BR

J. D. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

03/07/1989

RPI 959

Carta-patente expirada

#21.1

Patente extinta em 25/07/98 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).

09/25/2001

RPI 1603

Concessão da patente

#16.1

08/30/1994

RPI 1239

Notificação para pagamento de retribuição

#13.1

03/15/1994

RPI 1215

Deferimento

#9.1

10/19/1993

RPI 1194

Solicitação de exame técnico

#4.1

04/14/1992

RPI 1115

Publicação do pedido de patente

#3.1

03/13/1990

RPI 1009

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