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Official data from INPI

PROCESSO PARA A FABRICAÇÃO DE UM ELEMENTO CONSTRUTIVO QUE ABSORVE SOM DO AR, BEM COMO ELEMENTO CONSTRUTIVO FABRICADO SEGUNDO ESSE PROCESSO

Em AnáliseInvention Patent

Application data

Number

PI8702500

Type

Invention Patent

Filing

05/15/1987

Publication

02/23/1988

Progress at the INPI

  1. Filing05/15/87
  2. Publication02/23/88
  3. Examination06/14/88
  4. Allowance08/24/93
  5. Grant04/26/94
  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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Matec Holding Ag

CH

Inventors

A. S. (pessoa física)

DE

H. T. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

2006/86 · 05/16/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/14/1988

RPI 921

Publicação do pedido de patente

#3.1

02/23/1988

RPI 905

Pedido de patente depositado

#2.1

08/04/1987

RPI 876

Carta-patente expirada

#21.1

Patente extinta em 15/05/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/26/1994

RPI 1221

Deferimento

#9.1

08/24/1993

RPI 1186

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