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Official data from INPI

APERFEIÇOAMENTOS EM SAPATAS DE FREIO PARA TRENS

Arquivada/ExtintaInvention Patent
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Application data

Number

PI8906068

Type

Invention Patent

Filing

11/30/1989

Publication

05/07/1991
View on INPI

Progress at the INPI

  1. Filing11/30/89
  2. Publication05/07/91
  3. Examination07/27/93
  4. Allowance05/02/95
  5. Grant11/28/95
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Siderea S A I C y A

AR

S. A. (pessoa física)

AR

Inventors

A. T. (pessoa física)

AR

A. G. (pessoa física)

AR

Technical data

IPC Classification

B61H 1/00F16D 51/66

Priority claims

AR

314.495 · 07/25/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 30/11/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

11/28/1995

RPI 1304

Notificação para pagamento de retribuição

#13.1

09/26/1995

RPI 1295

Deferimento

#9.1

05/02/1995

RPI 1274

6.5

12/13/1994

RPI 1254

Exigência - art. 36 da LPI

#6.1

07/26/1994

RPI 1234

Pedido de certificado de adição de invenção

#5.1

02/16/1994

RPI 1211

Solicitação de exame técnico

#4.1

07/27/1993

RPI 1182

Publicação do pedido de patente

#3.1

05/07/1991

RPI 1066

Pedido de patente depositado

#2.1

03/20/1990

RPI 1010

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