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Official data from INPI

DISPOSIÇÃO CONSTRUTIVA EM EQUIPAMENTO LAVADOR DE GASES

PublicadaInvention Patent

Application data

Number

PI8700458

Type

Invention Patent

Filing

02/02/1987

Publication

03/15/1988

Progress at the INPI

  1. Filing02/02/87
  2. Publication03/15/88
  3. Examination06/19/90
  4. Allowance03/08/94
  5. Grant10/25/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 03/15/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. K. (pessoa física)

SP, BR

Inventors

H. K. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação antecipada

#3.2

03/15/1988

RPI 908

Pedido de patente depositado

#2.1

06/02/1987

RPI 867

Carta-patente expirada

#21.1

Patente extinta em 02/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

06/21/1994

RPI 1229

Deferimento

#9.1

03/08/1994

RPI 1214

Conhecimento de parecer técnico

#7.1

07/21/1992

RPI 1129

Solicitação de exame técnico

#4.1

06/19/1990

RPI 1023

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