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Official data from INPI

REGULADOR DE PASSAGEM DE CONDENSADO PARA PURGADORES COM ALTA CAPACIDADE DE VAZÃO.

Em AnáliseInvention Patent

Application data

Number

PI8703416

Type

Invention Patent

Filing

07/06/1987

Publication

01/17/1989

Progress at the INPI

  1. Filing07/06/87
  2. Publication01/17/89
  3. Examination10/24/89
  4. Allowance05/08/90
  5. Grant10/30/90
  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.

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Latest action published by the INPI: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Asca Equipamentos Industriais Ltda

RJ, BR

See this company's full portfolio

Inventors

E. H. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/24/1989

RPI 992

Publicação do pedido de patente

#3.1

01/17/1989

RPI 952

Pedido de patente depositado

#2.1

09/01/1987

RPI 880

Carta-patente expirada

#21.1

Patente extinta em 06/07/2002

07/29/2008

RPI 1960

Republicação - classificação IPC

#15.11

04/16/1991

RPI 1063

Concessão da patente

#16.1

10/30/1990

RPI 1039

Deferimento

#9.1

05/08/1990

RPI 1017

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