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Official data from INPI

TRILHO DE AÇO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904780

Type

Invention Patent

Filing

09/21/1989

Publication

05/01/1990

Progress at the INPI

  1. Filing09/21/89
  2. Publication05/01/90
  3. Examination03/24/92
  4. Allowance11/28/95
  5. Grant10/29/96
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 12/22/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Bristish Steel Limited

GB

B. B. (pessoa física)

GB

British Steel Plc

GB

Inventors

C. S. (pessoa física)

GB

D. T. (pessoa física)

GB

W. H. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8822293.0 · 09/22/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 21/09/2004

12/22/2009

RPI 2033

Alteração de nome deferida

#25.4

Alterado de British Steel PLC

02/28/2001

RPI 1573

Concessão da patente

#16.1

10/29/1996

RPI 1352

Notificação para pagamento de retribuição

#13.1

06/18/1996

RPI 1333

Deferimento

#9.1

11/28/1995

RPI 1304

Conhecimento de parecer técnico

#7.1

02/21/1995

RPI 1264

6.2

08/30/1994

RPI 1239

Solicitação de exame técnico

#4.1

03/24/1992

RPI 1112

Publicação do pedido de patente

#3.1

05/01/1990

RPI 1016

Pedido de patente depositado

#2.1

03/13/1990

RPI 1009

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