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Official data from INPI

APARELHO DOSADOR DE GASES

Prazo de SigiloInvention Patent

Application data

Number

PI8901770

Type

Invention Patent

Filing

04/11/1989

Publication

10/30/1990

Progress at the INPI

  1. Filing04/11/89
  2. Publication10/30/90
  3. Examination04/14/92
  4. Allowance11/07/95
  5. Grant09/24/96
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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

Companhia de Saneamento de Minas Gerais - Copasa

MG, BR

J. C. (pessoa física)

MG, BR

See this company's full portfolio

Inventors

J. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

05/30/1989

RPI 971

Carta-patente expirada

#21.1

Patente extinta em 11/04/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

09/24/1996

RPI 1347

Notificação para pagamento de retribuição

#13.1

03/19/1996

RPI 1320

Deferimento

#9.1

11/07/1995

RPI 1301

Exigência - art. 36 da LPI

#6.1

04/04/1995

RPI 1270

14.1

03/16/1993

RPI 1163

Solicitação de exame técnico

#4.1

04/14/1992

RPI 1115

Publicação do pedido de patente

#3.1

10/30/1990

RPI 1039

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