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Official data from INPI

Processo e dispositivo para tratar termicamente pelo menos um fio de aço carbono e instalação de tratamento térmico de pelo menos um fio de aço carbono

Prazo de SigiloInvention Patent

Application data

Number

PI8903004

Type

Invention Patent

Filing

06/21/1989

Publication

02/06/1990

Progress at the INPI

  1. Filing06/21/89
  2. Publication02/06/90
  3. Examination10/15/91
  4. Allowance09/23/97
  5. Grant07/28/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 08/01/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Compagnie Generale Des Etablissements Michelin - Michelin & Cie

FR

See this company's full portfolio

Inventors

A. R. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

88/08425 · 06/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/01/1989

RPI 980

Carta-patente expirada

#21.1

Patente extinta em 21/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

09/23/1997

RPI 1399

6.2

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

10/15/1991

RPI 1089

Publicação do pedido de patente

#3.1

02/06/1990

RPI 1005

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