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Official data from INPI

PROCESSO E APARELHO PARA TRATAMENTO TÉRMICO DE BARRAS DE AÇO

Em ExigênciaInvention Patent

Application data

Number

PI8504315

Type

Invention Patent

Filing

09/06/1985

Publication

07/01/1986

Progress at the INPI

  1. Filing09/06/85
  2. Publication07/01/86
  3. Examination10/21/86
  4. Allowance09/28/93
  5. Grant05/31/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sumitomo Electric Industries, Ltd

JP

See this company's full portfolio

Inventors

K. Y. (pessoa física)

JP

K. O. (pessoa física)

JP

T. A. (pessoa física)

JP

Y. N. (pessoa física)

JP

Y. Y. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

188636/84 · 09/07/1984

JP

215397/84 · 10/15/1984

JP

218948/84 · 10/17/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

10/21/1986

RPI 835

Publicação do pedido de patente

#3.1

07/01/1986

RPI 819

Pedido de patente depositado

#2.1

10/29/1985

RPI 784

Carta-patente expirada

#21.1

Patente extinta em 06/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

09/28/1993

RPI 1191

Exigência - art. 36 da LPI

#6.1

05/18/1993

RPI 1172

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